| Cash generated from operations | Cash generated from operations 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
| (in €‘000) |  | Notes |  | 2023 |  | 2022 |  | 2021 |  
| Loss before income tax |  |  |  | (109,778) |  |  | (304,656) |  |  | (319,320) |  |  
| Adjustments to reconcile loss before income tax to net cash flows: |  |  |  |  |  |  |  |  |  
| Loss on modification of old facility |  | 25 |  | — |  |  | 1,730 |  |  | — |  |  
| Loss on extinguishment of old facility |  | 25 |  | — |  |  | 2,832 |  |  | — |  |  
| Fair value (gains)/losses on derivatives (purchase options) |  | 7 |  | — |  |  | (3,787) |  |  | (2,900) |  |  
| Fair value (gains)/losses on derivatives (power purchase agreements) |  | 7 |  | 7,442 |  |  | — |  |  | — |  |  
| Fair value (gains)/losses on Public and Private warrant liabilities |  | 27 |  | 6,273 |  |  | (27,103) |  |  | — |  |  
| Other finance (income)/costs |  | 12 |  | 31,535 |  |  | 12,221 |  |  | 15,340 |  |  
| Share-based payment expenses |  | 4, 11 |  | 21,120 |  |  | 258,089 |  |  | 291,837 |  |  
| Depreciation, impairments and reversal of impairments of property, plant and equipment |  | 9 , 10 , 15 |  | 20,222 |  |  | 16,749 |  |  | 5,596 |  |  
| Depreciation and impairments of right-of-use of assets |  | 9 , 10 , 17 |  | 8,537 |  |  | 6,710 |  |  | 3,408 |  |  
| Amortization and impairments of intangible assets |  | 9 , 10, 16 |  | 3,635 |  |  | 3,691 |  |  | 2,720 |  |  
| Net (gain)/loss on disposal of property, plant and equipment |  | 7 |  | 7,975 |  |  | 10,473 |  |  | 210 |  |  
| Movements in working capital: |  |  |  |  |  |  |  |  |  
| Decrease/(increase) in inventories |  | 18 |  | (8,087) |  |  | (16,788) |  |  | (4,306) |  |  
| Decrease/(increase) in other financial assets |  | 19 |  | (9,491) |  |  | (3,312) |  |  | (2,563) |  |  
| Decrease/(increase) in trade and other receivables, contract assets, and prepayments and other assets |  | 6 , 20 , 21 |  | (20,490) |  |  | (21,664) |  |  | (21,315) |  |  
| Increase/(decrease) in trade and other payables and contract liabilities |  | 6 , 28 |  | 7,828 |  |  | (31,031) |  |  | 28,562 |  |  
| Increase/(decrease) in provisions and other liabilities |  | 26 |  | 2,597 |  |  | 142 |  |  | (190) |  |  
| Cash generated from/(used in) operations |  |  |  | (30,681) |  |  | (95,704) |  |  | (2,921) |  |  |