v3.26.1
Operating costs and expenses by nature - Schedule of Operating Costs and Expenses by Nature (Details)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Schedule Of Operating Costs And Expenses By Nature Abstract        
Employee benefits expense ¥ 42,381   ¥ 304,121 ¥ 640,764
Professional service fees 49,213   157,768 141,938
Market incentives for charging services 123,556   113,224 231,121
Rental, facility and utilities 1,932   32,650 26,088
Cost of charging services revenues 514   28,447 21,167
Cost of energy solutions revenues 258   27,605 86,528
Promotion and advertising expenses 7,332   22,384 39,862
Traveling, entertainment and general office expenses 10,185   16,739 24,850
Depreciation of right-of-use assets 1,646   5,265 7,440
Depreciation of property, plant and equipment 1,336   1,480 947
Amortization of intangible assets 743   743 472
Bandwidth and server custody expenses 205   2,155 3,585
Payment processing costs 799   1,063 1,067
Net impairment losses on receivables, prepayments and other financial assets 81,558 $ 11,663 300,921 73,816
Provision for losses on inventories, net 0   0 3,296
Others 75,759   14,367 9,712
Total operating costs and expenses ¥ 397,417   ¥ 1,028,932 ¥ 1,312,653