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    SEC Form 10-Q filed by NET Power Inc.

    5/12/25 4:31:31 PM ET
    $NPWR
    Industrial Machinery/Components
    Energy
    Get the next $NPWR alert in real time by email
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    UNITED STATES
    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549
    FORM 10-Q
    xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the quarterly period ended March 31, 2025
    OR
    oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the transition period from ______ to ______
    Commission File Number 001-40503
    NET Power Inc.
    (Exact name of registrant as specified in its charter)
    Delaware
    98-1580612
    (State or other jurisdiction of
    incorporation or organization)
    (I.R.S. Employer
    Identification No.)
    320 Roney St.
    Suite 200
    Durham, North Carolina
    27701
    (Address of Principal Executive Offices)(Zip Code)
    (919) 287-4750
    Registrant’s telephone number, including area code
    Securities registered pursuant to Section 12(b) of the Act:
    Title of each classTrading Symbol(s)Name of each exchange on which registered
    Class A Common Stock
    NPWR
    The New York Stock Exchange
    Warrants, each exercisable for one share of
    Class A Common Stock at a price of $11.50
    NPWR-WT
    The New York Stock Exchange
    Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days. Yes x No o
    Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No o
    Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
    Large accelerated fileroAccelerated filero
    Non-accelerated filerxSmaller reporting companyx
    Emerging growth companyx
    If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
    Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x
    The registrant had outstanding 77,726,852 shares of Class A Common Stock and 141,340,211 shares of Class B Common Stock as of May 9, 2025.



    TABLE OF CONTENTS
    Page
    Certain Defined Terms
    1
    Cautionary Note Regarding Forward-Looking Statements
    2
    PART I.
    FINANCIAL INFORMATION
    Item 1.
    Financial Statements (Unaudited)
    3
    Condensed Consolidated Balance Sheets
    3
    Condensed Consolidated Statements of Operations and Comprehensive Loss
    5
    Condensed Consolidated Statements of Mezzanine Shareholders' Equity and Shareholders' Equity
    6
    Condensed Consolidated Statements of Cash Flows
    8
    Notes to Condensed Consolidated Financial Statements
    10
    Item 2.
    Management’s Discussion and Analysis of Financial Condition and Results of Operations
    22
    Item 3.
    Quantitative and Qualitative Disclosures About Market Risk
    27
    Item 4.
    Controls and Procedures
    28
    PART II.
    OTHER INFORMATION
    Item 1.
    Legal Proceedings
    29
    Item 1A.
    Risk Factors
    29
    Item 2.
    Unregistered Sales of Equity Securities and Use of Proceeds
    29
    Item 3.
    Defaults Upon Senior Securities
    29
    Item 4.
    Mine Safety Disclosures
    29
    Item 5.
    Other Information
    29
    Item 6.
    Exhibits
    31
    Signatures
    32



    Table of Contents
    Certain Defined Terms
    For the definitions of certain defined terms used throughout this Quarterly Report on Form 10-Q (this “Report”), please refer to the section entitled “Certain Defined Terms” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024 (the “Annual Report”).
    1

    Table of Contents
    Cautionary Note Regarding Forward-Looking Statements
    This Report contains “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act. Statements that do not relate strictly to historical or current facts are forward-looking and usually identified by the use of words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “forecast,” “future,” “intend,” “may,” “opportunity,” “plan,” “project,” “seek,” “should,” “strategy,” “will,” “will likely result,” “would” and other similar words and expressions, but the absence of these words does not mean that a statement is not forward-looking. Forward-looking statements may relate to the development of the Company’s technology, the anticipated demand for the Company’s technology and the markets in which the Company operates, the timing of the deployment of plant deliveries, and the Company’s business strategies, capital requirements, potential growth opportunities and expectations for future performance (financial or otherwise). Forward-looking statements are based on current expectations, estimates, projections, targets, opinions and/or beliefs of the Company, and such statements involve known and unknown risks, uncertainties and other factors.

    The risks and uncertainties that could cause those actual results to differ materially from those expressed or implied by these forward-looking statements include: (i) risks relating to the uncertainty of the projected financial information with respect to the Company and risks related to the Company’s ability to meet its projections; (ii) the ability to recognize the anticipated benefits of the Business Combination, which may be affected by, among other things, competition, the ability of the Company to grow and manage growth profitably, and the ability of the Company to retain its management and key employees; (iii) the Company’s ability to utilize its net operating loss and tax credit carryforwards effectively; (iv) the capital-intensive nature of the Company’s business model, which will likely require the Company to raise additional capital in the future; (v) barriers the Company may face in its attempts to deploy and commercialize its technology; (vi) the complexity of the machinery the Company relies on for its operations and development; (vii) potential changes and/or delays in site selection and construction that result from regulatory, logistical, and financing challenges; (viii) the Company’s ability to establish and maintain supply relationships; (ix) risks related to the Company’s arrangements with third parties for the development, commercialization and deployment of technology associated with the Company’s technology; (x) risks related to the Company’s other strategic investors and partners; (xi) the Company’s ability to successfully commercialize its operations; (xii) the availability and cost of raw materials; (xiii) the ability of the Company’s supply base to scale to meet the Company’s anticipated growth; (xiv) the Company's ability to expand internationally; (xv) the Company’s ability to update the design, construction, and operations of its technology; (xvi) the impact of potential delays in discovering manufacturing and construction issues; (xvii) the possibility of damage to the Company’s Texas facilities as a result of natural disasters; (xviii) the ability of commercial plants using the Company’s technology to efficiently provide net power output; (xix) the Company’s ability to obtain and retain licenses; (xx) the Company’s ability to establish an initial commercial scale plant; (xxi) the Company’s ability to license to large customers; (xxii) the Company’s ability to accurately estimate future commercial demand; (xxiii) the Company’s ability to adapt to the rapidly evolving and competitive natural and renewable power industry; (xxiv) the Company’s ability to comply with all applicable laws and regulations; (xxv) the impact of public perception of fossil fuel-derived energy on the Company’s business; (xxvi) any political or other disruptions in gas producing nations; (xxvii) the Company’s ability to protect its intellectual property and the intellectual property it licenses; (xxviii) risks relating to data privacy and cybersecurity, including the potential for cyberattacks or security incidents that could disrupt our or our service providers’ operations; (xxix) potential litigation that may be instituted against the Company; and (xxx) other risks and uncertainties indicated in Part I, Item 1A of the Annual Report and other documents subsequently filed with the SEC by the Company.

    Should one or more of these risks or uncertainties materialize, or should any of the assumptions made by our management prove incorrect, actual results may vary in material respects from those projected in the forward-looking statements contained in this Report. Accordingly, you should not place undue reliance on these forward-looking statements in deciding whether to invest in our securities.

    Forward-looking statements speak only as of the date they are made. Except to the extent required by applicable law or regulation, we undertake no obligation to update the forward-looking statements contained herein to reflect events or circumstances after the date of this Report or to reflect the occurrence of unanticipated events. The Company gives no assurance that it will achieve its expectations.
    2

    Table of Contents
    Part I - Financial Information
    Item 1. Financial Statements
    NET Power Inc.
    Condensed Consolidated Balance Sheets (Unaudited)
    In thousands, except par value
    March 31,December 31,
    20252024
    ASSETS
    Current assets
    Cash and cash equivalents$300,030 $329,230 
    Short-term investments100,000 100,000 
    Investments in securities, available-for-sale90,675 78,344 
    Interest receivable5,130 3,682 
    Prepaid expenses and other current assets2,080 1,774 
    Total current assets497,915 513,030 
    Long-term assets
    Restricted cash2,458 2,446 
    Investments in securities, available-for-sale10,051 22,628 
    Intangible assets, net1,224,938 1,241,343 
    Goodwill— 359,847 
    Property, plant, and equipment, net100,042 151,470 
    Operating lease right-of-use assets2,600 2,699 
    Other long-term assets915 652 
    Total assets$1,838,919 $2,294,115 
    LIABILITIES, MEZZANINE SHAREHOLDERS' EQUITY, AND SHAREHOLDERS' EQUITY
    Current liabilities
    Accounts payable$849 $3,092 
    Accrued liabilities10,174 7,407 
    Due to related parties9,485 6,537 
    Operating lease liabilities, current portion674 683 
    Finance lease liabilities, current portion187 187 
    Total current liabilities21,369 17,906 
    Earnout Shares liability82 1,958 
    Warrant liability8,994 81,283 
    Asset retirement obligation3,345 3,265 
    Non-current operating lease liabilities1,829 2,125 
    Non-current finance lease liabilities70 110 
    Tax Receivable Agreement liability— 20,974 
    Deferred taxes4,703 4,306 
    Total liabilities40,392 131,927 
    Commitments and contingencies (Note 14)
    The accompanying notes are an integral part of these condensed consolidated financial statements.
    3

    Table of Contents
    NET Power Inc.
    Condensed Consolidated Balance Sheets (Continued) (Unaudited)
    In thousands, except par value
    March 31,December 31,
    20252024
    Mezzanine shareholders' equity
    Redeemable non-controlling interests in subsidiary1,161,316 1,506,584 
    Shareholders' equity
    Preferred Stock, $.0001 par value; 1,000 shares authorized; no shares issued or outstanding as of March 31, 2025 and December 31, 2024
    — — 
    Class A Common Stock, $.0001 par value; 520,000 shares authorized; 77,063 shares issued and outstanding as of March 31, 2025 and 76,760 shares issued and outstanding as of December 31, 2024
    8 8 
    Class B Common Stock, $.0001 par value; 310,000 shares authorized; 140,566 shares issued and outstanding as of March 31, 2025 and 139,691 shares issued and outstanding as of December 31, 2024
    14 14 
    Additional paid-in capital872,545 771,594 
    Accumulated other comprehensive loss38 32 
    Accumulated deficit(235,394)(116,044)
    Total shareholders' equity637,211 655,604 
    Total liabilities, mezzanine shareholders' equity, and shareholders' equity$1,838,919 $2,294,115 
    The accompanying notes are an integral part of these condensed consolidated financial statements.
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    NET Power Inc.
    Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited)
    In thousands, except per share data
    Three Months Ended March 31,
    20252024
    Revenue$— $— 
    Cost of revenue— — 
    Gross profit— — 
    Operating expenses
    General and administrative8,691 6,409 
    Sales and marketing1,187 751 
    Research and development22,600 11,242 
    Project development4,490 324 
    Goodwill impairment and other charges415,897 — 
    Depreciation, amortization, and accretion21,688 20,057 
    Total operating expenses474,553 38,783 
    Operating loss(474,553)(38,783)
    Other income (expense)
    Interest income5,880 7,690 
    Change in Earnout Shares liability and Warrant liability74,165 (14,577)
    Change in Tax Receivable Agreement liability21,317 — 
    Other income2 — 
    Net other income (expense)101,364 (6,887)
    Net loss before income tax(373,189)(45,670)
    Income tax (expense) benefit(397)4,038 
    Net loss after income tax(373,586)(41,632)
    Net loss attributable to non-controlling interests(254,236)(30,211)
    Net loss attributable to NET Power Inc.(119,350)(11,421)
    Other comprehensive income
    Unrealized gain on investments
    16 662 
    Total other comprehensive income16 662 
    Comprehensive loss(373,570)(40,970)
    Comprehensive loss attributable to non-controlling interests(254,226)(29,773)
    Comprehensive loss attributable to NET Power Inc.$(119,344)$(11,197)
    Loss per share of Class A Common Stock, basic and diluted$(1.55)$(0.16)
    Weighted average shares of Class A Common Stock, basic and diluted76,99771,895
    The accompanying notes are an integral part of these condensed consolidated financial statements.
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    NET Power Inc.
    Condensed Consolidated Statements of Mezzanine Shareholders' Equity and Shareholders' Equity (Unaudited)
    In thousands
    Class A Common StockClass B Common StockAdditional Paid-in CapitalAccumulated Other Comprehensive Income (Loss)Accumulated DeficitTotal Shareholders' EquityNon-controlling Interests - Mezzanine Equity
    SharesAmountSharesAmount
    Balance at December 31, 202476,760 $8 139,691 $14 $771,594 $32 $(116,044)$655,604 $1,506,584 
    Redemption of Class B Common Stock300 — (300)— 1,489 — — 1,489 (1,489)
    Issuance of Class A Common Stock3 — — — 41 — — 41 (14)
    Increase in Tax Receivable Agreement liability from qualifying exchanges— — — — (343)— — (343)— 
    Unrealized gain on investments— — — — — 6 — 6 10 
    Amortization of share-based payments— — 1,175 — 1,172 — — 1,172 9,053 
    Adjustment of redeemable non-controlling interest to book value— — — — 98,592 — — 98,592 (98,592)
    Net loss— — — — — — (119,350)(119,350)(254,236)
    Balance at March 31, 202577,063 $8 140,566 $14 $872,545 $38 $(235,394)$637,211 $1,161,316 
    The accompanying notes are an integral part of these condensed consolidated financial statements.
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    NET Power Inc.
    Condensed Consolidated Statements of Mezzanine Shareholders' Equity and Shareholders' Equity (Continued) (Unaudited)
    In thousands
    Class A Common StockClass B Common StockAdditional Paid-in CapitalAccumulated Other Comprehensive IncomeAccumulated DeficitTotal Shareholders' EquityNon-controlling Interests - Mezzanine Equity
    SharesAmountSharesAmount
    Balance at December 31, 202371,278 $7 141,787 $14 $851,841 $— $(66,853)$785,009 $1,545,905 
    Redemption of Class B Common Stock680 — (680)— 74 — — 74 (74)
    Issuance of Class A Common Stock13 — — — 4,032 — — 4,032 (4,005)
    Tax Receivable Agreement, net of deferred taxes— — — — (567)— — (567)— 
    Unrealized gain on investments— — — — — 224 — 224 438 
    Amortization of share-based payments— — 694 — 647 — — 647 5,622 
    Adjustment of redeemable non-controlling interest to redemption value— — — — (118,225)— — (118,225)118,225 
    Net loss— — — — — — (11,421)(11,421)(30,211)
    Balance at March 31, 202471,970 $7 141,802 $14 $737,802 $224 $(78,274)$659,773 $1,635,900 
    The accompanying notes are an integral part of these condensed consolidated financial statements.
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    NET Power Inc.
    Condensed Consolidated Statements of Cash Flows (Unaudited)
    In thousands
    Three Months Ended March 31,
    20252024
    Cash flows from operating activities:
    Net loss after income tax$(373,586)$(41,632)
    Adjustments to reconcile net loss to net cash used in operating activities:
    Depreciation, amortization, and accretion21,688 20,031 
    Goodwill impairment and other charges415,897 — 
    Non-cash (income) expense(646)29 
    Deferred taxes397 (4,039)
    Change in fair value of Earnout Shares liability and Warrant liability(74,165)14,577 
    Change in Tax Receivable Agreement liability(21,317)— 
    Share-based compensation expense10,196 6,269 
    Changes in operating assets and liabilities:
    Accounts receivable, net— 58 
    Interest receivable(1,416)1,396 
    Prepaid expenses and other current assets(306)230 
    Other long-term assets(263)— 
    Accounts payable(2,243)2,078 
    Accrued liabilities2,442 (1,589)
    Due to related parties2,948 (71)
    Net cash used in operating activities(20,374)(2,663)
    Cash flows from investing activities:
    Purchases of available-for-sale securities(24,670)(96,148)
    Maturities of available-for-sale securities25,350 — 
    Capitalized software(513)— 
    Purchase of property, plant and equipment(8,931)(9,521)
    Net cash used in investing activities(8,764)(105,669)
    Cash flows from financing activities:
    Payments on finance lease obligations(50)— 
    Net cash used in financing activities(50)— 
    Net decrease in cash, cash equivalents, and restricted cash(29,188)(108,332)
    Cash, cash equivalents, and restricted cash, beginning of period331,676 536,927 
    Cash, cash equivalents, and restricted cash, end of period$302,488 $428,595 
    The accompanying notes are an integral part of these condensed consolidated financial statements.
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    NET Power Inc.
    Condensed Consolidated Statements of Cash Flows (Continued) (Unaudited)
    In thousands
    Three Months Ended March 31,
    20252024
    Supplemental non-cash investing and financing activities:
    Change in accruals for capital expenditures$254 $(1,884)
    Reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheet:
    Cash and cash equivalents$300,030 $428,595 
    Restricted cash2,458 — 
    Total cash, cash equivalents, and restricted cash$302,488 $428,595 
    The accompanying notes are an integral part of these condensed consolidated financial statements.
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    NET Power Inc.
    Notes to Condensed Consolidated Financial Statements (Unaudited)
    NOTE 1 — Nature of Business and Basis of Presentation
    Nature of Business
    NET Power Inc. (“Net Power” or the “Company”) is a clean energy technology company that has developed a proprietary process for producing electricity using a predominantly carbon dioxide working fluid that involves the capture and reuse, sale and sequestration of carbon dioxide (the “Net Power Cycle”). The Net Power Cycle is the subject of U.S. and foreign patents, as well as additional applications and provisional applications on file with the United States Patent and Trademark Office and international patent authorities.
    Basis of Presentation
    The accompanying unaudited condensed consolidated financial statements included in this Quarterly Report on Form 10-Q have been prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information; however, certain information or footnote disclosures normally included in complete financial statements prepared in accordance with US GAAP may have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). In management’s opinion, these unaudited condensed consolidated financial statements have been prepared on the same basis as the annual financial statements for the year ended December 31, 2024 and include all adjustments, which consist of only normal and recurring adjustments, necessary for fair statement. Certain prior period financial information has been reclassified to conform to current period presentation.
    The results reported in these unaudited condensed consolidated financial statements are not necessarily indicative of the results to be expected for the entire year. These unaudited condensed consolidated financial statements should be read in conjunction with the annual financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on March 10, 2025 (the “2024 Annual Report”).

    NOTE 2 — Significant Accounting Policies
    The Company’s significant accounting policies used to prepare these condensed consolidated financial statements, unless otherwise noted below, are consistent with those used for the fiscal year ended December 31, 2024. Accordingly, refer to Note 2 to the consolidated financial statements in the 2024 Annual Report for the Company’s significant accounting policies.
    Use of Estimates
    The preparation of financial statements in conformity with US GAAP requires management to make certain estimates, judgments and assumptions. The estimates, judgments and assumptions made by the Company when accounting for items and matters such as, but not limited to, depreciation, amortization, asset valuations and share-based compensation were based on information available at the time they were made. These estimates, judgments, and assumptions can affect the reported amounts of assets and liabilities as of the date of the condensed consolidated financial statements, as well as amounts reported on the condensed consolidated statements of operations and comprehensive loss during the periods presented. Actual results could differ from those estimates.
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    Segment Reporting
    In accordance with ASC Topic 280, Segment Reporting (“ASC 280”), the Company has determined that it has one operating segment and one reportable segment, which includes all of the Company’s consolidated accounts. The Company’s chief operating decision maker (“CODM”) is its Chief Executive Officer. The CODM focuses on consolidated Operating income (loss), with a focus on research and development and general and administrative expenses, along with interest income to assess the Company’s performance and allocate resources. Refer to the condensed consolidated financial statements for significant segment expenses and assets regularly provided to the CODM.
    Accounting Standards Not Yet Adopted
    During December 2023, the Financial Accounting Standards Board (“FASB”) issued ASU 2023-09, Income Taxes (Topic 740)—Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires companies to provide annually a tabular reconciliation of the reported income tax expense (or benefit) from continuing operations to the product of the income (or loss) from continuing operations before income taxes and the applicable statutory federal income tax rate using specified categories and to disclose separately reconciling items within certain categories with absolute values equal to or greater than five percent of the product of the income (or loss) from continuing operations before tax and the applicable statutory tax rate. Additionally, ASU 2023-09 requires a public business entity to disclose the year-to-date amount of income taxes paid, net of refunds received, to federal, state, and foreign jurisdictions. If a payment to a single federal, state or foreign jurisdiction equals or exceeds five percent of total income taxes paid, ASU 2023-09 requires separate disclosure of that payment. Finally, ASU 2023-09 requires a public business entity to disclose income (or loss) from continuing operations before income tax expense (or benefit) disaggregated between domestic and foreign jurisdictions and to disclose income tax expense (or benefit) from continuing operations disaggregated between federal, state, and foreign jurisdictions. ASU 2023-09 removes the requirement to disclose the nature and estimate of the range of reasonably possible increases or decreases in the unrecognized tax benefits balance in the next 12 months, or to make a statement that an estimate of the range cannot be made. ASU 2023-09 is effective for the Company for calendar years beginning after December 15, 2025. Early adoption is permitted. The Company is evaluating the impact to its income tax disclosures.
    In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”), which requires new tabular disclosures in the notes to consolidated financial statements, disaggregating certain cost and expense categories within relevant captions on the consolidated statements of operations. The prescribed cost and expense categories requiring disaggregated disclosures include purchases of inventory, employee compensation, depreciation, and intangible asset amortization, along with certain other expense disclosures already required by U.S. GAAP that would need to be integrated within the new tabular disaggregated expense disclosures. Additionally, the amendments also require the disclosure of total selling expenses and an entity's definition of those expenses. The amendments in ASU 2024-03 are effective for annual periods beginning after December 15, 2026 and for subsequent interim periods. Early adoption is permitted and the amendments should be applied on a prospective basis, although retrospective application is permitted. The Company is evaluating the impact the new accounting standard will have on its expense disclosures.
    NOTE 3 — Investments
    The Company has two types of investments: (i) a certificate of deposit and (ii) investments in securities which are classified as available-for-sale.
    The entire balance of $100 million of the certificate of deposit is included within short-term investments on the condensed consolidated balance sheets as of March 31, 2025 and December 31, 2024. The interest receivable on the certificate of deposit was $4.2 million and $2.9 million at March 31, 2025 and December 31, 2024, respectively, and is included in Interest receivable on the condensed consolidated balance sheets.
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    The following tables presents the Company’s available-for-sale investments included in the condensed consolidated balance sheets:
    $ in thousandsMarch 31, 2025
    Current assetsAmortized CostUnrealized GainFair Value
    Corporate bonds$5,711 $8 $5,719 
    Commercial paper19,863 — 19,863 
    U.S. treasuries64,973 120 65,093 
    Total$90,547 $128 $90,675 
    Long-term assetsAmortized CostUnrealized GainFair Value
    U.S. treasuries$10,001 $50 $10,051 
    Total$10,001 $50 $10,051 
    $ in thousandsDecember 31, 2024
    Current assetsAmortized CostUnrealized GainFair Value
    Corporate bonds$11,006 $15 $11,021 
    Commercial paper8,629 — 8,629 
    U.S. treasuries58,637 57 58,694 
    Total$78,272 $72 $78,344 
    Long-term assetsAmortized CostUnrealized GainFair Value
    U.S. treasuries$22,538 $90 $22,628 
    Total$22,538 $90 $22,628 
    The cost of securities sold is based on the specific-identification method. During the three months ended March 31, 2025 and 2024, there were no securities sold. There were no credit losses recognized during the three months ended March 31, 2025 and 2024. The Company established no allowances for credit losses as of March 31, 2025 and December 31, 2024. The Company’s long-term available-for-sale investments mature through December 2026.
    NOTE 4 — Fair Value Measurements
    The following table presents the assets and liabilities that the Company measures at fair value on a recurring basis included in the condensed consolidated balance sheets and indicates the level of the valuation inputs the Company utilized to determine the fair value:
    March 31,December 31,
    $ in thousandsLevel20252024
    Assets
    Available-for-sale investments1$100,726 $100,972 
    Short-term investments2100,000 100,000 
    Total assets$200,726 $200,972 
    Liabilities
    Public Warrants1$2,672 $31,034 
    Private Placement Warrants36,322 50,249 
    Earnout Shares382 1,958 
    Total liabilities$9,076 $83,241 
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    The following table contains a reconciliation of the beginning and ending balances of recurring Level 3 fair value measurements included in the condensed consolidated statements of operations and comprehensive loss:
    Three Months Ended March 31,
    $ in thousands20252024
    Balance of recurring Level 3 liabilities at beginning of period$52,207 $38,622 
    Change in Earnout Shares liability and Private Placement Warrant liability(45,803)8,542 
    Change in Option liability— — 
    Issuances— — 
    Payments— — 
    Balance of recurring Level 3 liabilities at end of period$6,404 $47,164 
    Short-term Investments
    Short-term investments are valued at cost, which approximates fair value. The fair value of the short-term investments is considered a Level 2 fair value measurement because cost basis is not observable in a public market.
    Marketable Securities
    The fair value of the available-for-sale investments is classified as a Level 1 fair value measurement, because the investments are valued using the most recent quoted prices for identical assets in active markets.
    Warrants
    The Public Warrants are exercisable for 8,624,974 shares of Class A Common Stock at a price of $11.50 per share. The Company may redeem the Public Warrants for $0.01 if the last reported trading price of the Company’s Class A Common Stock price equals or exceeds $18.00 per share for any 20 trading days within a 30-trading day period. Additionally, the Public Warrants may be redeemed if the last reported trading price of the Company’s Class A Common Stock equals or exceeds $10.00 and is below $18.00 by paying a make-whole premium. The Public Warrants expire five years after the Closing Date. The Public Warrants are valued using their quoted and publicly available market prices. Since their fair value is predicated on quoted prices in an active market for identical instruments, the fair value of the Public Warrants is considered a Level 1 fair value measurement.
    The Private Placement Warrants are exercisable for 10,900,000 shares of Class A Common Stock at a price of $11.50 per share. The Private Placement Warrants expire five years after the Closing Date. The Private Placement Warrants are exercisable on a cashless basis and are non-redeemable as long as they are held by the initial purchasers or their permitted transferees. The Private Placement Warrants and Class A Common Stock issuable upon exercise of the Private Placement Warrants are entitled to registration rights.
    The Company uses a Black-Scholes Merton Model to value the Private Placement Warrants. Key inputs into the Black-Scholes Merton Model include the last Class A Common Stock closing price of $2.63 as of March 31, 2025 with a strike price of $11.50 per share. The volatility assumption is based on a blended average of equity volatility of publicly traded companies within the Company’s peer group, the Company's own historical volatility, and the implied volatility of the Public Warrants. The fair value of the Private Placement Warrants is considered a Level 3 fair value measurement.
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    The following table contains the key inputs used in the valuations of the Private Placement Warrants:
    March 31, 2025December 31, 2024
    Term (in years)3.193.44
    Volatility80.0 %59.3 %
    Risk-free rate3.8 %4.2 %
    Earnout Shares

    The fair value of the Earnout Shares (as defined in Note 6 to the consolidated financial statements included in the 2024 Annual Report) is estimated using a Monte Carlo simulation. The Monte Carlo simulation considers daily simulated stock prices as a proxy for the Company’s daily volume-weighted average share price. Historically, the volatility assumption is based on a blended average of equity volatility of publicly traded companies within the Company’s peer group, the historical volatility of the Company’s Class A common stock, and the implied volatility of the Public Warrants. For the valuation as of March 31, 2025, the volatility assumption is based on the Company’s own historical volatility, implied volatility on the Company’s own common stock options, and the implied volatility of the Public Warrants.
    The following table contains the key inputs used in the valuations of the Earnout Shares:
    March 31, 2025December 31, 2024
    Term (in years)1.191.43
    Volatility86.4 %59.7 %
    Risk-free rate3.9 %4.1 %
    NOTE 5 — Goodwill and Intangible Assets
    Goodwill
    Goodwill represents the future economic benefits derived from the Company’s unique market position, the growth attributable to the Net Power Cycle and the Company’s assembled workforce, none of which are individually and separately recognized as intangible assets. Goodwill is allocated to the Company’s sole reportable segment and reporting unit.
    The following table presents the changes to goodwill included in the condensed consolidated balance sheets:
    March 31,December 31,
    $ in thousands20252024
    Balance at the beginning of the period$359,847 $423,920 
    Impairment(359,847)— 
    Measurement adjustments— (64,073)
    Balance at the end of the period$— $359,847 
    During the second quarter of 2024, the Company completed its estimate of deferred taxes as of the Closing Date and finalized its purchase price allocation, which resulted in a measurement adjustment that reduced goodwill by $64.1 million.
    In March 2025, the Company assessed its goodwill for impairment. Due to a change in the Company’s business plan, as discussed below, and related sustained decrease in the Company’s market capitalization, the Company concluded that it was more likely than not that the fair value was less than its carrying amount as of March 31, 2025. As a result, the Company fully impaired its goodwill and recorded an impairment of $359.8 million during the three months ended March 31, 2025, which is included in Goodwill impairment and other charges on the condensed consolidated statements of operations and comprehensive loss.
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    Definite-Lived Intangible Assets
    The following tables summarize the Company’s definite-lived intangible assets included in the condensed consolidated balance sheets:
    March 31,December 31,
    20252024
    $ in thousandsGross AmountAccumulated AmortizationNet AmountGross AmountAccumulated AmortizationNet Amount
    Developed technology$1,345,000 $(121,797)$1,223,203 $1,345,000 $(104,985)$1,240,015 
    Software(1)
    1,861 (126)1,735 1,407 (79)1,328 
    Total definite-lived intangible assets$1,346,861 $(121,923)$1,224,938 $1,346,407 $(105,064)$1,241,343 
    ___________
    (1) Software includes $0.7 million and $0.6 million related to software work-in-progress as of March 31, 2025 and December 31, 2024.
    The Company evaluates its long-term assets for impairment when a triggering event occurs. During the quarter ended March 31, 2025, the Company identified a triggering event due to higher-than-expected indicative cost estimates for its first utility-scale project. The Company has since paused new purchase commitments for the project’s long-lead equipment and has commenced a value engineering exercise to determine project cost reductions and better understand the project’s expected economic feasibility.
    As the Company is in the development stage, focusing on developing and commercializing its technology, it assessed its definite-lived intangible assets, the Demonstration Plant, and other corporate assets for impairment as an asset group. In this assessment, management used a probability-weighted cash flow analysis, incorporating estimated cash flows from the deployment of its technology and the value of the underlying intellectual property. Based on the recoverability test, no impairment was required.
    The following table presents the Company’s amortization expense for the following periods:
    Three Months Ended March 31,
    $ in thousands20252024
    Amortization expense
    $16,873 $16,812 
    The Company does not own or control any intangible assets with indefinite useful lives. The following table presents estimated amortization expense for the next five years and thereafter (in thousands):
    Remaining 2025$50,728 
    202667,637 
    202767,637 
    202867,637 
    202967,494 
    2030 and thereafter903,805 
    Total$1,224,938 
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    NOTE 6 — Property, Plant, and Equipment
    The following table summarizes the key classifications of property, plant, and equipment included in the condensed consolidated balance sheets:
    March 31,December 31,
    $ in thousands20252024
    Demonstration Plant$122,741 $122,845 
    Furniture and equipment1,084 1,069 
    Assets acquired under finance lease349 349 
    Construction-in-progress1,847 48,438 
    Total property, plant, and equipment, gross126,021 172,701 
    Accumulated depreciation and amortization 1
    (25,979)(21,231)
    Total property, plant, and equipment, net$100,042 $151,470 
    ___________
    (1) As of March 31, 2025 and December 31, 2024, $32 thousand and $18 thousand, respectively, of accumulated depreciation and amortization is related to amortization of the finance lease right-of-use assets.
    As of December 31, 2024, Construction-in-progress in the table above includes capitalized costs related to Project Permian, the Company’s first utility-scale facility. During the first quarter of 2025, the Company initiated a value engineering process to assess the project’s feasibility and optimize its design and temporarily paused further long lead equipment releases. Consequently, $56.1 million of costs included in Construction-in-progress were expensed during the three months ended March 31, 2025. This amount is included in Goodwill impairment and other charges in the condensed consolidated statements of operations and comprehensive loss.
    See discussion of the impairment test performed for the Demonstration Plant in Note 5 — Goodwill and Intangible Assets.
    The following table presents the Company’s depreciation expense for the following periods:
    Three Months Ended March 31,
    $ in thousands20252024
    Depreciation expense
    $4,735 $3,176 
    NOTE 7 — Accrued Liabilities
    Accrued liabilities in the condensed consolidated balance sheets consist of the following:
    March 31,December 31,
    $ in thousands20252024
    Incentive compensation$992 $2,916 
    Capital expenditures2,539 2,285 
    Accrued project expenses3,708 — 
    Professional fees1,271 1,143 
    Other accrued liabilities1,664 1,063 
    Total accrued liabilities$10,174 $7,407 
    NOTE 8 — Leases
    On March 7, 2025, the Company entered into a building lease agreement for a warehouse in La Porte, Texas. The lease has an initial term of 62 months and commenced in April 2025, and the lease contains a renewal option of five years. The future minimum lease payments associated with this lease are approximately $2.2 million.
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    NOTE 9 — Redeemable Non-Controlling Interests in Subsidiary
    The following table presents the Company and the non-controlling interest (“NCI”) ownership percentage of the membership interests in OpCo as of the following periods:
    March 31,December 31,
    20252024
    Non-controlling interest holders64.5 %64.4 %
    NET Power Inc.35.5 %35.6 %
    The Company measures redeemable NCI each quarter at the higher of its book value or its redemption value. As of March 31, 2025, the Company measured redeemable NCI at book value. As of December 31, 2024, the Company measured redeemable NCI at redemption value. The adjustment to record redeemable NCI at book or redemption value is recorded through Additional paid-in capital on the condensed consolidated statement of mezzanine shareholders' equity and shareholders' equity.
    OpCo’s net loss before income tax was attributed to redeemable NCI holders at 64.4% and 66.2% for the three months ended March 31, 2025 and 2024, respectively.
    NOTE 10 — Share-Based Payments
    Aggregate share-based compensation expense, net of forfeitures, was $10.2 million and $6.3 million for the three months ended March 31, 2025 and 2024, respectively.
    Restricted Stock Units
    As of March 31, 2025, there have been 980,155 restricted stock units (“RSU”) awarded under the terms of the Net Power Inc. 2023 Omnibus Incentive Plan. As of March 31, 2025, there was $5.8 million of unrecognized share-based compensation expense related to unvested RSUs, which the Company expects to recognize over a weighted average period of three years. Generally, RSUs granted to employees and the majority of executives either cliff-vest on the three-year anniversary of the date of grant or vest ratably on each anniversary of the date of grant over a three-year period. Annual awards granted to independent directors cliff-vest on the first anniversary of each award’s grant date.
    Additionally, there were 1,257,467 RSUs awarded to certain legacy employees as permitted by the Business Combination agreement (the “Make-Whole Awards”). These RSUs vest upon occurrence of the following events, which are considered performance conditions: (i) commercial operations achieved by the Company’s first utility-scale power plant, and (ii) a fully-executed license agreement and final investment decision achieved for another utility-scale power plant. The Make-Whole Awards expire ten years from the grant date. The Company will record compensation expense related to the Make-Whole Awards from the date the performance conditions are considered probable through the expected vesting dates. As of March 31, 2025, the performance conditions are not considered probable, therefore, no compensation cost has been recognized related to the Make-Whole Awards.
    The following table presents a summary of RSU activity during the three months ended March 31, 2025:
    In thousands, except per share dataQuantityGrant Date Fair Value Per Share
    Unvested, beginning of period2,132$11.54 
    Granted210.59 
    Forfeited(1)11.30 
    Vested(1)13.23 
    Unvested, end of period2,133$11.53 
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    Refer to Note 13 — Related Party Transactions for information related to the BHES JDA.
    NOTE 11 — Loss per Share
    Basic loss per share attributable to shareholders is calculated by dividing net loss attributable to shareholders by the weighted-average number of shares outstanding during the period. Diluted loss per share attributable to shareholders includes the effect of potentially dilutive common shares outstanding.
    The following table sets forth the computation of the Company’s basic and diluted loss per share for the following periods:
    Three Months Ended March 31,
    In thousands, except per share data20252024
    Numerator
    Net loss after income tax$(373,586)$(41,632)
    Net loss attributable to Net Power Inc.$(119,350)$(11,421)
    Denominator
      Weighted-average number shares outstanding, basic and diluted76,997 71,895
     Loss per share attributable to shareholders, basic and diluted$(1.55)$(0.16)
    Based on the amounts outstanding at March 31, 2025 and 2024, the Company excluded the following financial instruments from the computation of diluted loss per share because their inclusion would be anti-dilutive (in thousands):
    March 31,
    Anti-Dilutive Instruments20252024
    Public Warrants8,6218,622
    Private Placement Warrants10,90010,900
    Earnout Shares329329
    BHES Bonus Shares2,0682,068
    Unvested Class A OpCo Units242848
    Vested Class A OpCo Units141,243141,275
    Unvested RSUs875504
    Unvested PSUs128—
    Make-Whole Awards1,257—
    Stock Options2,460—
    Total168,123164,547
        
    Only shares of Class A Common Stock participate in the Company’s undistributed earnings. As such, the Company’s undistributed earnings are allocated entirely to the Class A Common Stock based on the weighted-average number of shares of Class A Common Stock outstanding for the three months ended March 31, 2025 and 2024.
    NOTE 12 — Income Taxes
    As of March 31, 2025, the Company estimated its annual effective tax rate to be 1.8%, and recorded a deferred income tax expense of $0.4 million, for the quarter. The annual effective tax rate varies from the statutory federal income tax rate due to amounts allocated to NCI, changes in the Company’s valuation allowance and other permanent items.
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    Tax Receivable Agreement
    The actual amount and timing of any payments under the Tax Receivable Agreement (“TRA”) will vary depending upon a number of factors, including the timing of exchanges by the OpCo Class A unitholders, the amount and timing of the taxable income the Company generates in the future, and the federal tax rates then applicable, among other factors. The Company recognizes the TRA liability when the amount is probable and estimable.
    Due to the Company’s decision to pause new purchase commitments for the project’s long-lead equipment and commencement of a value engineering exercise to determine project cost reductions and better understand the project’s expected economic feasibility, the Company has determined it was not more likely than not that its deferred tax assets subject to the TRA would be realized. Therefore, in March 2025, the Company reduced the TRA liability of $21.3 million to zero as payments related to the TRA are not considered probable as of March 31, 2025. The reduction is recorded in Change in Tax Receivable Agreement liability in the condensed consolidated statements of operations and comprehensive loss. If utilization of the Company’s deferred tax assets subject to the TRA become more likely than not in the future, the Company will reassess the probability of payments under the TRA and any such liability will be recognized as an expense in the condensed consolidated statements of operations and comprehensive loss.
    NOTE 13 — Related Party Transactions
    The following table summarizes the related party transactions included in the condensed consolidated statements of operations and comprehensive loss:
    Three Months Ended March 31,
    $ in thousands20252024
    Master services agreement administrative costs$27 $26 
    General and administrative$27 $26 
    Master services agreement costs for Demonstration Plant$708 $267 
    BHES JDA
    17,827 8,346 
    Research and development$18,535 $8,613 
    The Company had $9.5 million and $6.5 million in current liabilities payable to related parties as of March 31, 2025 and December 31, 2024, respectively, on the condensed consolidated balance sheets related to the following services. These related party payables are unsecured and are due on demand.
    Master Services Agreements
    A significant shareholder provides the Company with patent administration services related to the development of the Net Power Cycle. These totals are included in General and administrative on the condensed consolidated statements of operations and comprehensive loss.
    Another shareholder supports the Company with regard to general business oversight and with the operation of the Demonstration Plant. These totals are reflected in Research and development on the condensed consolidated statements of operations and comprehensive loss.
    BHES JDA
    On February 3, 2022, the Company entered into the Original JDA, which was subsequently amended and restated on June 30, 2022 and December 13, 2022 with BHES to invest in, develop, and deploy the Net Power Cycle in collaboration with the Company. The BHES JDA is settled in cash and issuances of equity in exchange for services related to the development and commercialization of the technology. The Company records the expense for services provided by BHES within Research and development on the condensed consolidated
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    statements of operations and comprehensive loss. Upon the issuance of shares during the three months ended March 31, 2025, BHES’s ownership interest exceeded 5%; therefore, they are considered a related party for all periods presented.
    The portion of BHES JDA costs that the Company pays with Class A OpCo Units and shares of Class B Common Stock is recorded within Additional paid-in capital on the condensed consolidated balance sheets and the condensed consolidated statement of mezzanine shareholders' equity and shareholders' equity. The following table displays the expense recognized in our consolidated statement of comprehensive income for shares distributed as payment for services rendered under the terms of the BHES JDA during the periods described below:
    QuantityExpense Recognized
    Three Months Ended March 31,Three Months Ended March 31,
    $ in thousands2025202420252024
    Class A OpCo Units1,247,582650,248$8,247 $4,298 
    Class B Common Stock1,247,582650,248— — 
    Total$8,247 $4,298 

    Shares issued as payment under the terms of the Amended and Restated JDA are issued at a discount expected to cause a total loss of approximately $17.5 million to the Company over the term of the agreement. The Company has incurred inception-to-date losses of $9.6 million related to such issuances. Additionally, if the volume-weighted average price of the Company’s stock for ten consecutive trading days (“10-Day VWAP”) immediately preceding the payment date for services under the BHES JDA is less than $4.00 per share (the “Floor Price”), an incremental cash payment is required for the difference between the 10-Day VWAP and the Floor Price (the “BHES JDA Make-Whole Payment”). As of March 31, 2025, the Company had $2.5 million in current liabilities payable to related parties on the condensed consolidated balance sheets related to the BHES JDA Make-Whole Payment.
    BHES may earn additional shares (“BHES Bonus Shares”) if it meets certain proposed project milestones related to the development of our technology. The Company determined that BHES’s achievement of each of these milestones is probable; therefore, the Company recognizes the compensation cost associated with milestone share-based payments ratably over the expected service period. The following table disaggregates the variable share-based compensation payable to BHES should it meet its milestone objectives:
    $ in thousandsPerformance Period End DateCompensation Cost Incurred To DateRemaining Compensation CostTotal Compensation Cost
    BHES JDA January 2027$24,041 $3,304 $27,345 
    BHES Limited Notice to Proceed
    Through March 31, 2025, the Company has incurred $22.0 million under a Letter of Limited Notice to Proceed for the Purchase of KPEP Long Lead Time Items with BHES, as amended, for the purchase of long-lead materials necessary for the procurement and manufacture of the turboexpander and related key process equipment and machinery for the Company’s first utility-scale power plant, along with related fees and services.
    NOTE 14 — Commitments and Contingencies

    Litigation

    From time to time, the Company is party to certain legal actions and claims. Other than any such ordinary routine litigation incidental to the business and except as described below, the Company is not currently a party
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    to, nor is our property currently subject to, any material legal proceedings, and the Company is not aware of any such proceedings contemplated by governmental authorities.

    On April 18, 2025, an alleged stockholder of the Company (the “Plaintiff”), individually and on behalf of all others similarly situated, filed a putative class action complaint for violation of federal securities laws against the Company, its Chief Executive Officer, President and Interim Chief Financial Officer, its former Chief Financial Officer and its former President and Chief Operating Officer (collectively, the “Defendants”) in the United States District Court for the Middle District of North Carolina (the “Complaint”). The Complaint purports to bring a federal securities class action on behalf of a class of persons and entities other than the Defendants who acquired the Company’s securities between June 9, 2023 and March 7, 2025 and asserts violations of Sections 10(b) and 20(a) of the Exchange Act and Rule 10b-5 promulgated thereunder. The Complaint alleges, among other things, that the Defendants made materially false and misleading statements related to the Company’s business, operations and prospects, including the timing and costs of developing Project Permian. The Plaintiff seeks, among other things, certification of a class, an award of unspecified compensatory damages, interest, costs and expenses, including attorneys’ fees and expert fees. The Company intends to vigorously defend against the claims brought by the Plaintiff in this matter. The Company cannot predict at this point the length of time that this action will be ongoing or the liability, if any, which may arise therefrom.
    Asset Retirement Obligation
    Under the terms of the lease for the Demonstration Plant, the Company is required to remove the Demonstration Plant and restore the land to post-clearing grade level. During 2024, the Company revised the estimate of its asset retirement obligation as a result of additional construction at the Demonstration Plant. The following table reconciles the beginning and ending balances of the asset retirement obligation as of the dates presented:
    March 31,December 31,
    $ in thousands20252024
    Asset retirement obligation, beginning of period$3,265 $2,060 
    Revision of estimate— 996 
    Accretion expense80 209 
    Asset retirement obligation, end of period$3,345 $3,265 
    Unconditional Purchase Obligations
    The Company has committed to purchase industrial components for installation at its Demonstration Plant and its first commercial power plant. The Company pays for these components in installments aligned to contractual milestones. In accordance with ASC Topic 440, Commitments, the Company does not recognize these commitments on the condensed consolidated balance sheets.
    As of March 31, 2025, the Company had $62.9 million of remaining purchase obligations through February 2027 related to the BHES JDA, which is expected to be settled 50% in cash and 50% in common stock, plus any incremental cash payments that may be owed for periods where the 10-Day VWAP is less than $4.00 per share in the 10 trading days preceding the date on which shares are to be issued to BHES. In addition, the Company had $95.0 million of additional remaining asset purchase obligations through 2027. Refer to Note 13 — Related Party Transactions for additional information related to the BHES JDA.
    NOTE 15 — Subsequent Events
    In April 2025, the Company terminated certain members of its management team. As a result of these changes, the Company expects to record charges of $3.0 million to $3.3 million in severance costs and approximately $1.0 million to $1.3 million of costs related to the accelerated vesting of stock-based compensation during the second quarter 2025, subject to the execution of customary releases.
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    Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
    The following management’s discussion and analysis (“MD&A”) provides information that management believes is relevant to an assessment and understanding of our condensed consolidated results of operations and financial condition and includes forward-looking statements that involve risks, uncertainties and assumptions, including those described in “Cautionary Note Regarding Forward-Looking Statements” included in the forepart of this Quarterly Report on Form 10-Q (our “Quarterly Report”) and included in Part I, Item 1A Risk Factors in our Annual Report on Form 10-K for the year ended December 31, 2024 (our “Annual Report”), as filed with the SEC on March 12, 2025.
    The following MD&A should be read in conjunction with our condensed consolidated financial statements and related notes included in Part 1, Item 1 in this Quarterly Report and our audited consolidated financial statements and related notes included in our Annual Report.
    Overview
    Net Power is an energy technology company that has developed a novel power generation system (which we refer to as the “Net Power Cycle”) designed to produce reliable and affordable electricity from natural gas while capturing virtually all atmospheric emissions. The Net Power Cycle is designed to inherently capture CO2 while producing virtually no air pollutants such as SOX, NOX, and other particulates.
    Key Factors Affecting Our Prospects and Future Results
    We believe that our performance and future success depend on a number of factors that present significant opportunities for us but also pose risks and challenges, including, but not limited to, cost over-runs in the testing and operation of the Demonstration Plant and future utility-scale plants, technical problems with the Net Power Cycle, that could impact performance, potential supply chain issues, changes in tax policies and other incentives supporting carbon capture, our access to the capital needed to finance the development of utility and commercial-scale plants, and development of competing clean-energy technology sooner or at a lesser cost than the Net Power Cycle. Supply chain issues related to the manufacturing and transportation of key equipment, including as a result of tariffs imposed by the U.S. or other countries or other trade barriers, measures, or conflicts, may lead to a delay in our commercialization efforts, which could impact our results of operations, financial condition and prospects. Also, currency fluctuations, inflation, and tariffs and other trade barriers, measures or conflicts may significantly increase freight charges, raw material costs and other expenses associated with our business, and such increased costs could materially and adversely affect our results of operations, financial condition and prospects.
    Commencing Commercial Operations
    Over the next several years, Net Power plans to conduct additional research and equipment validation testing campaigns at its Demonstration Plant. Additionally, Net Power began purchasing initial long-lead materials for its first utility-scale power plant (“SN1”) in 2024 with the intention of locating SN1 in the Permian Basin of West Texas (“Project Permian”). However, after completing the front-end engineering and design (“FEED”) process in December 2024, the initial cost estimates were higher than originally anticipated. In response, during the first quarter of 2025, Net Power commenced a post-FEED optimization and value engineering process. In March 2025, the Company suspended further long-lead equipment releases but value engineering and certain development work remains in progress. Provided we are successful in our value engineering process, the project would come online no earlier than 2029. We are focused on delivering a project that will catalyze future adoption for utility-scale customers.

    In addition to the value engineering process discussed above, major remaining development activities relating to completing construction of SN1 are similar to the activities we previously undertook to design, build, and commission the Demonstration Plant. These activities include: finalizing all permitting, supply and off-take contracts, obtaining the financing required to achieve a final investment decision, and constructing and commissioning the facility.
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    Key Components of Results of Operations
    We are a development stage company and our historical results may not be indicative of our future results. Accordingly, the drivers of our future financial results, as well as the components of such results, may not be comparable to our historical or future results of operations.
    Results of Operations
    Comparison of the Three Months Ended March 31, 2025 to the Three Months Ended March 31, 2024
    The following table sets forth our condensed results of operations data for the periods presented:
    Three Months Ended March 31,$ Change% Change
    $ in thousands20252024
    Revenue$— $— $— n/a
    Cost of revenue— — — n/a
    Gross profit— — 
    Operating expenses
    General and administrative8,691 6,409 2,282 36 %
    Sales and marketing1,187 751 436 58 %
    Research and development22,600 11,242 11,358 101 %
    Project development4,490 324 4,166 1286 %
    Goodwill impairment and other charges415,897 — 415,897 n/a
    Depreciation, amortization, and accretion21,688 20,057 1,631 8 %
    Total operating expenses474,553 38,783 
    Operating loss(474,553)(38,783)
    Other income (expense)
    Interest income5,880 7,690 (1,810)(24)%
    Change in Earnout Shares liability and Warrant liability74,165 (14,577)88,742 (609)%
    Change in Tax Receivable Agreement liability21,317 — 21,317 n/a
    Other income2 — 2 n/a
    Net other income (expense)101,364 (6,887)
    Net loss before income tax(373,189)(45,670)
    Income tax (expense) benefit(397)4,038 (4,435)(110)%
    Net loss after income tax(373,586)(41,632)
    Net loss attributable to non-controlling interests(254,236)(30,211)
    Net loss attributable to NET Power Inc.$(119,350)$(11,421)

    General and administrative
    General and administrative expenses consist primarily of personnel-related expenses associated with our general and administrative organization and professional fees for legal, accounting, and other consulting services. General and administrative expenses increased by $2.3 million, or 36%, for the three months ended March 31, 2025, as compared to the same period in 2024. This increase was due to increases in corporate headcount, higher professional fees for engineering and accounting services and franchise taxes.
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    Sales and marketing
    Sales and marketing expenses consist primarily of personnel-related costs, consultants and information technology costs directly associated with our sales and marketing activities, which include general publicity efforts for the Company. Sales and marketing expenses increased by $0.4 million, or 58%, for the three months ended March 31, 2025, as compared to the same period in 2024. This increase was primarily attributable to costs associated with growth in employee headcount.
    Research and development
    Research and development (“R&D”) expenses consist primarily of labor expenses and fees paid to third parties working on and testing specific aspects of our technology, including testing at our Demonstration Plant and development activities under the BHES JDA. R&D expenses increased by $11.4 million, or 101%, for the three months ended March 31, 2025, as compared to the same period in 2024. This increase was primarily due to more activity under the BHES JDA and related increased activity at the Demonstration Plant due to the ongoing testing campaign that commenced in the fourth quarter of 2024 and is expected to continue over the next several years. Additionally, the three months ended March 31, 2025 includes a $2.5 million accrual for the BHES JDA Make-Whole Payment. There was no such payment due for the same period in 2024.
    Project development
    Project development expenses consist of labor expenses and fees paid to third parties developing commercial scale projects. Project development expenses increased by $4.2 million, or 1,286%, for the three months ended March 31, 2025, as compared to the same period in 2024. Beginning in March 2025, the Company began expensing costs associated with Project Permian as the Company suspended further long lead equipment releases for the project while it performs a value engineering process to evaluate the feasibility of the project. For the three months ended March 31, 2025, the Company expensed $3.8 million of costs related to Project Permian.
    Goodwill impairment and other charges
    Goodwill impairment and other charges consists of $359.8 million related to goodwill impairment and $56.1 million in construction-in-progress costs associated with Project Permian. The Company fully impaired goodwill during the three months ended March 31, 2025 due to a change in the Company’s business plan and related sustained decrease in the Company’s market capitalization. Additionally, the Company expensed costs associated with the construction of Project Permian as management initiated a value engineering process to assess the project’s feasibility and optimize its design and temporarily paused further long lead equipment releases.
    Depreciation, amortization, and accretion
    Depreciation, amortization and accretion expenses consist primarily of depreciation on our Demonstration Plant and amortization of intangible assets. Depreciation, amortization and accretion expense increased by $1.6 million, or 8%, for the three months ended March 31, 2025, as compared to the same period in 2024, primarily due to new additions to the Demonstration Plant throughout 2024.
    Interest income
    Interest income (expense) decreased by $1.8 million, or 24%, for the three months ended March 31, 2025, as compared to the same period in 2024. Interest income decreased due to lower cash balances and interest rates, partially offset by investment accretion.
    Change in Earnout Shares liability and Warrant liability
    The change in Earnout Shares liability and Warrant liability was $88.7 million, or 609%, for the three months ended March 31, 2025, as compared to the same period in 2024. The change was primarily due to the changes in
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    the market price of our Class A Common Stock, which correlates to the change in value of our Warrants. The Company’s stock price decreased $7.96 per share during the three months ended March 31, 2025 compared to an increase of $1.29 per share for the three months ended March 31, 2024.
    Change in Tax Receivable Agreement liability
    The change in Tax Receivable Agreement liability was $21.3 million, or 100.0%, for the three months ended March 31, 2025, as compared to the same period in 2024. During the three months ended March 31, 2025, the the TRA liability of $21.3 million was reduced to zero based on the determination that it was not more likely than not that its deferred tax assets subject to the TRA would be realized. Therefore, payments under the TRA are not considered probable as of March 31, 2025.
    Income tax (expense) benefit
    Income tax expense was $0.4 million for the three months ended March 31, 2025, compared to an income tax benefit of $4.0 million for the same period in 2024. This change was due to an increase in the Company’s valuation allowance, partially offset by a favorable permanent difference related to the change in the value of the Warrant liability as compared to the same period in 2024.
    Net loss attributable to non-controlling interests
    Net loss attributable to non-controlling interest was 64.4% of net loss before income tax for the three months ended March 31, 2025, as compared to 66.2% of net loss for the three months ended March 31, 2024. The change in the non-controlling interests was due to exchanges by OpCo members of Class A OpCo units for Class A PubCo shares, partially offset by the additional issuance of Class A OpCo units under the BHES JDA.
    Liquidity and Capital Resources
    Our principal sources of liquidity are cash, short-term investments and investments in highly liquid available-for-sale securities. Historically, our sources of liquidity have also included raising capital through the sale of equity. We may issue additional equity securities in the future. We measure liquidity in terms of our ability to fund the cash requirements of our R&D activities and our near-term business operations, including our contractual obligations and other commitments. Our current liquidity needs primarily involve R&D activities for the ongoing development of our technology, general and administrative costs, and progress certain development activities related to SN1.
    The following table summarizes our liquidity position:
    March 31,December 31,
    20252024
    Cash and cash equivalents$300,030 $329,230 
    Short-term investments100,000 100,000 
    Available-for-sale securities100,726 100,972 
    Total liquidity$500,756 $530,202 
    The short-term investments are comprised of a single six-month certificate of deposit custodied by a domestic banking institution, and the available-for-sale securities are comprised of investment grade, fixed income securities. Additionally, our current liabilities were $21.4 million at March 31, 2025.
    We believe we have the ability to manage our operating costs, including R&D expenditures, such that our existing liquidity will be sufficient to fund our obligations for the next 12 months following the filing of this Report. We believe that our current sources of liquidity on hand should be sufficient to fund our general corporate operating expenses as we work to commercialize our technology, but certain costs are not reasonably estimable at this time and we may require additional funding. Specifically, we will require additional funding in
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    order to successfully construct our first utility-scale plant and to originate additional Net Power plant opportunities.
    Cash Flow Summary
    The following table shows our cash flows from operating activities, investing activities and financing activities for the presented periods:
    Three Months Ended March 31,
    20252024
    Net cash used in operating activities$(20,374)$(2,663)
    Net cash used in investing activities$(8,764)$(105,669)
    Net cash used in financing activities$(50)$— 
    Operating Activities
    Cash used in operating activities increased $17.7 million for the three months ended March 31, 2025, as compared to the same period in 2024. Our net cash used in operating activities to date have been primarily comprised of payroll, material and supplies, facilities expense, and professional services related to R&D, including the BHES JDA, and general and administrative activities. This change was primarily due to higher R&D costs, including costs incurred under the BHES JDA, as we commenced the testing campaign at our Demonstration Plant during the fourth quarter of 2024, project development costs and the build out of the Company during 2024. We expect our cash used in operating activities to increase significantly before we start to generate any material cash inflows from our operations as costs related to Project Permian are being expensed pending the results of the value engineering process initiated during the three months ended March 31, 2025.
    Investing Activities
    During the three months ended March 31, 2025, net cash used in investing activities decreased $96.9 million as compared to the same period in 2024. Our cash used in investing activities for the three months ended March 31, 2024 primarily reflects the initial investments in available-for-sale securities during that period.
    Financing Activities
    Our cash provided by financing activities was generally consistent for the three months ended March 31, 2025, as compared to the same period in 2024.
    Commitments and Contractual Obligations
    Asset Retirement Obligation
    We hold a lease for approximately 218,900 square feet of land under the Demonstration Plant. In addition, we have an oxygen supply agreement with the lessor to supply oxygen to the Demonstration Plant. The lease expires on the earlier of (i) January 1, 2031 and (ii) the termination of our oxygen supply agreement with the lessor. The term of the oxygen supply agreement expires on January 1, 2030 with automatic 12-month renewal terms. The oxygen supply agreement may be terminated by us or by the lessor upon 24 months’ written notice prior to the expiration date of its current term. The underlying lease requires the removal of all equipment and the obligation to restore the land to post-clearing grade level, which has resulted in the recognition of an asset retirement obligation liability of $3.3 million and $3.3 million as of March 31, 2025 and December 31, 2024, respectively.
    Leases
    As of March 31, 2025, future minimum lease payments attributable to the Company’s operating and finance lease arrangements are approximately $3.0 million and $0.3 million, respectively.
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    On March 7, 2025, the Company entered into a building lease agreement for a warehouse in La Porte, Texas with an initial term of 62 months commencing in April 2025. The lease contains a renewal option of five years. The future minimum lease payments associated with this lease are approximately $2.2 million.
    The Company leases corporate office space in Durham, North Carolina, and Houston, Texas. The lease for the Company’s corporate office space in Houston, Texas, commenced July 11, 2024. The Company also entered into a land lease agreement with a subsidiary of Occidental Petroleum, a related party, on March 8, 2024, for land in West Texas with commencement on December 1, 2024.
    Additionally, the Company leases two office trailers at the Demonstration Plant in La Porte, Texas, with an effective date of September 1, 2024. The lease has a term of 24 months and contains a purchase option whereby the Company may purchase the trailers at the end of the lease term; therefore, the Company classified the lease as a finance lease.
    Joint Development Agreement
    As of March 31, 2025 and December 31, 2024, we have committed to funding a portion of the remaining development costs incurred under the BHES JDA through a combination of cash and equity. The BHES JDA’s total value is $140 million, which assumes a fixed price per share. As of March 31, 2025, we recognized approximately $38.5 million of inception-to-date cash expenses and approximately $38.5 million of inception-to-date share-based expenses related to the BHES JDA. In addition, the Company may be required to make additional cash payments to BHES during periods when the volume-weighted average price of our Class A Common Stock is less than $4.00 per share in the 10 trading days preceding applicable quarterly share issuances under the terms of the BHES JDA (the “JDA Make-Whole Payment”). As of March 31, 2025, we recognized a liability of $2.5 million related to the JDA Make-Whole Payment.
    Off-Balance Sheet Arrangements
    As of March 31, 2025 and December 31, 2024, we have not engaged in any off-balance sheet arrangements, as defined in the rules and regulations of the SEC.
    Purchase Commitments
    As of March 31, 2025, we have committed to purchase certain components of industrial machinery for use at our Demonstration Plant and at SN1. The total gross commitments totaled $146.4 million. As of March 31, 2025, there was $95.0 million remaining related to these commitments.
    Critical Accounting Policies and Estimates
    There have been no material changes to our discussion of critical accounting estimates from those set forth in our Annual Report.
    Emerging Growth Company Accounting Election

    Section 102(b)(1) of the Jumpstart our Business Startups Act of 2012 (the “JOBS Act”) exempts emerging growth companies (“EGCs”) from being required to comply with new or revised financial accounting standards until private companies are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect not to take advantage of the extended transition period and comply with the requirements that apply to non-EGCs, and any such election to not take advantage of the extended transition period is irrevocable. We expect to be an EGC at least through the end of 2025 and will have the benefit of the extended transition period. We intend to take advantage of the benefits of this extended transition period.
    Item 3. Quantitative and Qualitative Disclosures About Market Risk
    We are a smaller reporting company as defined by Rule 12b-2 of the Exchange Act and are not required to provide the information otherwise required under this item.
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    Item 4. Controls and Procedures
    Evaluation of Disclosure Controls and Procedures
    Under the supervision and with the participation of our management, including our principal executive officer who is also our principal financial officer, we conducted an evaluation of the effectiveness of our disclosure controls and procedures, as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, as of the end of the fiscal quarter ended March 31, 2025. Based on this evaluation, our principal executive officer and our principal financial officer concluded that our disclosure controls and procedures were effective as of March 31, 2025.
    Disclosure controls and procedures are designed to ensure that information required to be disclosed by us in our Exchange Act reports is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.
    Changes in Internal Control over Financial Reporting
    No changes in our internal control over financial reporting occurred during the fiscal quarter ended March 31, 2025 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.
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    Part II - Other Information
    Item 1. Legal Proceedings

    From time to time, the Company is party to certain legal actions and claims. Other than any such ordinary routine litigation incidental to the business and except as described below, we are not currently a party to, nor is our property currently subject to, any material legal proceedings, and we are not aware of any such proceedings contemplated by governmental authorities.

    On April 18, 2025, an alleged stockholder (the “Plaintiff”), individually and on behalf of all others similarly situated, filed a putative class action complaint for violation of federal securities laws against us, our Chief Executive Officer, President and Interim Chief Financial Officer, our former Chief Financial Officer and our former President and Chief Operating Officer (collectively, the “Defendants”) in the United States District Court for the Middle District of North Carolina (the “Complaint”). The Complaint purports to bring a federal securities class action on behalf of a class of persons and entities other than the Defendants who acquired our securities between June 9, 2023 and March 7, 2025 and asserts violations of Sections 10(b) and 20(a) of the Exchange Act and Rule 10b-5 promulgated thereunder. The Complaint alleges, among other things, that the Defendants made materially false and misleading statements related to our business, operations and prospects, including the timing and costs of developing Project Permian. The Plaintiff seeks, among other things, certification of a class, an award of unspecified compensatory damages, interest, costs and expenses, including attorneys’ fees and expert fees. We intend to vigorously defend against the claims brought by the Plaintiff in this matter. We cannot predict at this point the length of time that this action will be ongoing or the liability, if any, which may arise therefrom.
    Item 1A. Risk Factors
    As a smaller reporting company, we are not required to provide the information called for by this Item. However, for a discussion of the material risks, uncertainties and other factors that could have a material effect on us, please refer to Part I, Item 1A. “Risk Factors” in our Annual Report.
    Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
    Unregistered Sales of Equity Securities
    On February 12, 2025, the Company issued 1,175,107 shares of Class B Common Stock and OpCo issued 1,175,107 Class A units to BHES as payment for costs incurred pursuant to the Amended and Restated JDA during the fourth quarter of 2024. The issuances by the Company and OpCo were exempt from registration under the Securities Act by virtue of Section 4(a)(2) of the Securities Act. These transactions did not involve any public offering, any underwriters, any underwriting discounts or commissions, or any general solicitation or advertising.
    Item 3. Defaults Upon Senior Securities
    None.
    Item 4. Mine Safety Disclosures
    Not applicable.
    Item 5. Other Information

    Separation Agreements and Consulting Agreements with Former Executives

    On May 7, 2025, our board of directors approved the Company’s entry into Separation and Release Agreements with Brian Allen, our former President and Chief Operating Officer, and Akash Patel, our former Chief Financial Officer. Pursuant to these Separation and Release Agreements, Mr. Allen and Mr. Patel will each be paid a cash severance payment of $741,234 and $738,196, respectively, which amounts are equal to the sum of
    29

    Table of Contents
    the following amounts: (i) an amount equal to the sum of each of their (A) current base salary and (B) the average of the actual annual bonuses paid to Mr. Allen and Mr. Patel with respect to 2023 and 2024, (ii) a pro-rated portion of their respective target annual bonuses for 2025, and (iii) an amount equal to 12 months of the premiums for their respective group health plan coverages (including coverage for eligible dependents) under the Company’s group health plans.

    Pursuant to the Separation and Release Agreements, Mr. Allen and Mr. Patel are subject to certain non-disparagement, non-compete, non-solicitation, and confidentiality and intellectual property provisions.

    Additionally, on May 7, 2025, our board of directors approved the Company’s entry into consulting agreements with each of Mr. Allen and Mr. Patel pursuant to which Mr. Allen and Mr. Patel will assist the Company in transitioning their former duties and advising on ongoing projects for periods of six months and three months, respectively. Mr. Allen will be paid $10,000 per month as a retainer pursuant to his consulting agreement. Mr. Patel will be paid $8,000 per month as a retainer pursuant to his consulting agreement.

    Chief Operating Officer Compensation

    In connection with his appointment as Chief Operating Officer, on May 7, 2025, our board of directors approved the following compensation to be paid to Marc Horstman: (i) an annualized base salary of $400,000; (ii) a target annual bonus equal to 60% of his base salary pursuant to our short-term incentive plan; (iii) and an annual equity grant with a grant-date value equal to 180% of his base salary pursuant to the 2023 Omnibus Incentive Plan. Additionally, Mr. Horstman will participate in our Amended and Restated Executive Severance Plan.

    Insider Trading Arrangements

    During the three months ended March 31, 2025, none of our directors or “officers” (as such term is defined in Rule 16a-1(f) under the Exchange Act) adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement” (as each term is defined in Item 408(a) of Regulation S-K).

    30

    Table of Contents
    Item 6. Exhibits
    Exhibit NumberDescription
    2.1+
    Business Combination Agreement, dated as of December 13, 2022, by and among Rice Acquisition Corp. II, Rice Acquisition Holdings II LLC, Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC (incorporated by reference to Exhibit 2.1 to the Company’s Current Report on Form 8-K filed with the SEC on December 14, 2022).
    2.2
    First Amendment to the Business Combination Agreement, dated as of April 23, 2023, by and among Topo Buyer Co, LLC and NET Power, LLC (incorporated by reference to Exhibit 2.1 to the Company’s Current Report on Form 8-K filed with the SEC on April 24, 2023).
    3.1
    Certificate of Incorporation of NET Power Inc. (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed with the SEC on June 14, 2023).
    3.2
    Bylaws of NET Power Inc. (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K filed with the SEC on June 14, 2023).
    10.1
    Third Amended and Restated Limited Liability Company Agreement of NET Power Operations LLC, dated as of January 17, 2025.(incorporated by reference to Exhibit 10.5 to the Company’s Annual Report on Form 10-K filed with the SEC on March 10, 2025).
    31.1
    Certification of Principal Executive Officer and Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
    32.1
    Certification of Chief Executive Officer (Principal Executive Officer and Principal Financial Officer) Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
    101.INSInline XBRL Instance Document.
    101.SCHInline XBRL Taxonomy Extension Schema Document.
    101.CALInline XBRL Taxonomy Extension Calculation Linkbase Document.
    101.DEFInline XBRL Taxonomy Extension Definition Linkbase Document.
    101.LABInline XBRL Taxonomy Extension Label Linkbase Document.
    101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document.
    0.104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).
    +
    Certain schedules or similar attachments to this exhibit have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company agrees to provide a copy of any omitted schedule or similar attachment to the SEC upon request.
    31

    Table of Contents
    Signatures
    Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

    Dated: May 12, 2025                        NET Power Inc.     
        
                                    By:      /s/ Kelly Rosser        
                                    Name:     Kelly Rosser
                                    Title:    Chief Accounting Officer
    (Principal Accounting Officer)

    32
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