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Earning (loss) per Share (Tables)

9 Months Ended

Sep. 30, 2025

Earnings Per Share [Abstract]

Schedule of Earnings (Loss) per Share, Basic and Diluted

The following table sets forth the computation of the Company’s basic and diluted earnings (loss) per share for the following periods:

						Three Months Ended September 30,												Nine Months Ended September 30,
In thousands, except per share data						2025						2024						2025						2024
Numerator
Net loss after income tax						$	(1,159,806)					$	(6,814)					$	(1,615,439)					$	(65,662)
Net income (loss) attributable to NET Power Inc.						$	(411,498)					$	818					$	(558,990)					$	(14,871)
Denominator
Weighted-average number shares outstanding, basic and diluted						77,883						73,537						77,530						72,541
Earnings (loss) per share attributable to shareholders, basic and diluted						$	(5.28)					$	0.01					$	(7.21)					$	(0.21)

Schedule of Antidilutive Securities Excluded from Computation of Earnings (Loss) per Share

Based on the amounts outstanding at September 30, 2025 and 2024, the Company excluded the following financial instruments from the computation of diluted earnings (loss) per share because their inclusion would be anti-dilutive:

In thousands																		September 30,
Anti-Dilutive Instruments																		2025						2024
Public Warrants																		8,621						8,622
Private Placement Warrants																		10,900						10,900
Earnout Shares																		329						329
BHES Bonus Shares																		2,068						2,068
Unvested Class A OpCo Units																		—						242
Vested Class A OpCo Units																		143,930						140,630
Unvested RSUs																		2,219						871
Unvested PSUs																		322						128
Make-Whole Awards																		1,257						1,179
Stock Options																		6,482						2,460
Total																		176,128						167,429

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- References

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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