Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Financial risk management - Additional Information (Detail)

v3.24.1.1.u2
Financial risk management - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2023
EUR (€)
€ / MWh
customer
interest_cap
Dec. 31, 2022
EUR (€)
interest_cap
customer
Dec. 31, 2027
Dec. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 19, 2022
EUR (€)
interest_cap
Disclosure of Financial Risk Management [Line Items]              
Average expected coverage 25.00%            
Fair value measurement input              
Disclosure of Financial Risk Management [Line Items]              
Percentage of reasonably possible increase in unobservable input, entity's own equity instruments 40.00%            
Revenue Concentration Risk              
Disclosure of Financial Risk Management [Line Items]              
Concentration of risk revenue number of customers | customer 25 14          
Concentration of risk revenue benchmark € 470,000 € 450,000          
Percentage of entity's revenue 78.00% 86.00%          
Trade Receivables and Contract Assets Concentration Risk              
Disclosure of Financial Risk Management [Line Items]              
Concentration of risk trade receivables and contract assets number of customers | customer 2 3          
Concentration of risk trade receivables and contract assets benchmark € 4,700,000 € 4,500,000          
Concentration of risk trade receivables and contract assets percentage 32.00% 49.00%          
More than one year              
Disclosure of Financial Risk Management [Line Items]              
Average expected coverage 77.00%            
More than one year | Old facility              
Disclosure of Financial Risk Management [Line Items]              
Debt instrument, term 5 years 5 years          
More than one year | Capital Expenditure Facility              
Disclosure of Financial Risk Management [Line Items]              
Undrawn borrowing facilities € 8,390,000            
Interest Rate Cap              
Disclosure of Financial Risk Management [Line Items]              
Number of derivative instruments | interest_cap 2 2         2
Notional amount   € 181,487,000         € 240,500,000
Interest Rate Cap | December 2027              
Disclosure of Financial Risk Management [Line Items]              
Notional amount € 240,500,000 € 181,486,500          
Interest rate risk              
Disclosure of Financial Risk Management [Line Items]              
Fixed interest borrowings percentage 0.00% 0.00%          
Interest rate risk | Interest Rate Cap              
Disclosure of Financial Risk Management [Line Items]              
Derivative instrument mitigation risk percentage 65.00% 65.00%         67.00%
Derivative instrument strike price percentage 3.43% 1.50%          
Interest rate risk | Interest Rate Cap | Forecast              
Disclosure of Financial Risk Management [Line Items]              
Derivative instrument strike price percentage     2.62% 2.63% 2.64% 2.97%  
Commodity price risk | Interest Rate Cap              
Disclosure of Financial Risk Management [Line Items]              
Derivative instrument mitigation risk percentage 80.00%            
Commodity price risk | Derivatives | The Netherlands              
Disclosure of Financial Risk Management [Line Items]              
Derivative instrument mitigation risk percentage 52.00%            
Average price of hedging instrument | € / MWh 96            
Commodity price risk | Derivatives | Germany              
Disclosure of Financial Risk Management [Line Items]              
Average price of hedging instrument | € / MWh 95