Project debt, Repayment schedule (Details) - USD ($) $ in Thousands |
Sep. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Repayment schedule [Abstract] | ||
| Project debt | $ 5,278,880 | $ 5,237,614 |
| Remainder of 2021 [Member] | ||
| Repayment schedule [Abstract] | ||
| Interest payment | 59,366 | |
| Nominal repayment | 163,975 | |
| Between January and September 2022 [Member] | ||
| Repayment schedule [Abstract] | ||
| Project debt | 166,131 | |
| Between October and December 2022 [Member] | ||
| Repayment schedule [Abstract] | ||
| Project debt | 163,122 | |
| 2021 [Member] | ||
| Repayment schedule [Abstract] | ||
| Interest payment | 19,287 | |
| Nominal repayment | 293,059 | |
| 2022 [Member] | ||
| Repayment schedule [Abstract] | ||
| Project debt | 328,364 | |
| 2023 [Member] | ||
| Repayment schedule [Abstract] | ||
| Project debt | 359,313 | 355,806 |
| 2024 [Member] | ||
| Repayment schedule [Abstract] | ||
| Project debt | 373,083 | 371,548 |
| 2025 [Member] | ||
| Repayment schedule [Abstract] | ||
| Project debt | 504,196 | 508,843 |
| Subsequent Years [Member] | ||
| Repayment schedule [Abstract] | ||
| Project debt | $ 3,489,692 | $ 3,360,707 |