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Disclosure on Individual Items of the Consolidated Financial Statements - Schedule of Revenue from Contracts with Customers Disaggregated by Major Products (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Schedule of Revenue from Contracts with Customers Disaggregated by Major Products [Line Items]      
Revenue from contracts with customers € 31,559 € 110,013 € 107,384
Charging [Member]      
Schedule of Revenue from Contracts with Customers Disaggregated by Major Products [Line Items]      
Revenue from contracts with customers 18,740 102,533 89,323
Service [Member]      
Schedule of Revenue from Contracts with Customers Disaggregated by Major Products [Line Items]      
Revenue from contracts with customers 10,277 5,603 2,004
Commercial and Industrial [Member]      
Schedule of Revenue from Contracts with Customers Disaggregated by Major Products [Line Items]      
Revenue from contracts with customers 2,190 1,677 15,788
Residential Member]      
Schedule of Revenue from Contracts with Customers Disaggregated by Major Products [Line Items]      
Revenue from contracts with customers 41
Other [Member]      
Schedule of Revenue from Contracts with Customers Disaggregated by Major Products [Line Items]      
Revenue from contracts with customers € 352 € 200 € 227