Related party transactions - Schedule of Other Transactions between Related Parties (Details) - Energy solution services - CNY (¥) ¥ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Related party transactions - Schedule of Other Transactions between Related Parties (Details) [Line Items]
Related party transactions	¥ 87	¥ 465	¥ 75,150
Shenzhen Yuanwanghechu Technology Co., Ltd. [Member]
Related party transactions - Schedule of Other Transactions between Related Parties (Details) [Line Items]
Related party transactions	0	400	74,460
Huzhou Zhidianlaile New Energy Technology Co., Ltd. [Member]
Related party transactions - Schedule of Other Transactions between Related Parties (Details) [Line Items]
Related party transactions	¥ 87	¥ 65	¥ 690

The amount of services received in related party transactions. [Refer: Total for all related parties [member]]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Note Effective 2027-01-01
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Name:	ifrs-full_ServicesReceivedRelatedPartyTransactions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration