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Financial instruments - Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of financial assets [line items]
Mark-to-market gain (loss) on financial assets	$ (14,788)	$ (12,897)
Forsee Power
Disclosure of financial assets [line items]
Mark-to-market gain (loss) on financial assets	(12,699)	(3,501)
Wisdom Motor
Disclosure of financial assets [line items]
Mark-to-market gain (loss) on financial assets	(2,200)	(4,900)
Quantron AG
Disclosure of financial assets [line items]
Mark-to-market gain (loss) on financial assets	(4,401)	(4,237)
HyCap Fund
Disclosure of financial assets [line items]
Mark-to-market gain (loss) on financial assets	5,084	214
CleanH2 Fund
Disclosure of financial assets [line items]
Mark-to-market gain (loss) on financial assets	(360)	(473)
Templewater
Disclosure of financial assets [line items]
Mark-to-market gain (loss) on financial assets	$ (212)	$ 0

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-Subparagraph a
-Clause i
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-URIDate 2024-03-27

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