v3.20.4

Nature of the business, Assets acquired (Details) $ in Thousands |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2021 USD ($) | Jan. 07, 2021 | Jan. 06, 2021 USD ($) MW | Aug. 17, 2020 USD ($) | Apr. 03, 2020 USD ($) MW | Aug. 02, 2019 USD ($) MW | May 24, 2019 USD ($) MW | Jan. 29, 2019 USD ($) | Dec. 31, 2020 USD ($) MW Grade | Oct. 31, 2020 USD ($) MW | Oct. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2021 | Aug. 16, 2020 USD ($) | May 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Oct. 22, 2019 USD ($) | Dec. 31, 2018 USD ($) | Nov. 27, 2018
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  |  |  | $ 116,614 |  |  | $ 116,614 |  |  |  | $ 139,925 |  | $ 53,419 |
Solana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
Renewable Energy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  |  |  | 61,866 |  |  | $ 61,866 |  |  |  | $ 77,549 |  |  |
Amherst Island [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross capacity | MW |  |  |  |  |  |  | 75 |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  | $ 4,900 |  |  |  |  |  |  |  |  |  |  |  |
ASI Operations LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  | $ 6,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition purchase price |  |  |  |  |  | $ 6,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Monterrey [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross capacity | MW |  |  |  |  |  | 142 |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  | $ 16,700 |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition purchase price |  |  |  |  |  | $ 42,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |
ATN2 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000 |  |
Befesa Agua Tenes, S.L.U. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.00% |  |  |  |
Ownership interest |  |  |  |  |  |  |  | 51.00% |  |  |  |  |  |  |  |  |  |  |
Consideration payment advanced |  |  |  |  |  |  |  | $ 19,900 |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |  |
Payment received through cash sweep mechanism |  |  |  |  |  |  |  |  |  |  | $ 7,800 |  |  |  |  |  |  |  |
Secured loan amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,500 |  |  |  |
Borrowings outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,000 |  |  |  |
Liberty Interactive Corporation [Member] | Solana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  | $ 290,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 272,000 |  |  |  |  |
Period of annual net production of asset |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance earn-out, period of highest annual net production of asset |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Calgary District Energy Center [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  |  |  |  | $ 20,000 |  |  |  |  |  |  |  |  |
Installed capacity | MW |  |  |  |  |  |  |  |  |  | 55 |  |  |  |  |  |  |  |  |
La Sierpe [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  |  |  | $ 20,000 |  |  | 20,000 |  |  |  |  |  |  |
Installed capacity | MW |  |  |  |  |  |  |  |  | 20 |  |  |  |  |  |  |  |  |  |
Coso [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installed capacity | MW |  |  |  |  |  |  |  |  | 135 |  |  |  |  |  |  |  |  |  |
Number of investment grade investments | Grade |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |
Period of PPA |  |  |  |  |  |  |  |  | 19 years |  |  |  |  |  |  |  |  |  |
Coso [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  |  |  | $ 170,000 |  |  | 170,000 |  |  |  |  |  |  |
Coso [Member] | Project Debt [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  |  |  | 40,000 |  |  | 40,000 |  |  |  |  |  |  |
Coso [Member] | Equity Investments [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  |  |  | 130,000 |  |  | $ 130,000 |  |  |  |  |  |  |
Rioglass [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |  |  |
Rioglass [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  |  |  |  |  |  |  |  | 42.50% |  |  |  |  |  |
Ownership interest | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of ownership, percentage |  |  |  |  |  |  |  |  |  |  |  |  | 42.50% |  |  |  |  |  |
Rioglass [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method | $ 7,000 |  |  |  |  |  |  |  | $ 7,000 |  |  | $ 7,000 |  |  |  |  |  |  |
Percentage interest acquired | 42.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Chile PV 1 [Member] | Renewable Energy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  | $ 4,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installed capacity | MW |  |  |  |  | 55 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Chile PV 2 [Member] | Renewable Energy [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  | $ 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installed capacity | MW |  |  | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Algonquin [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16.47%
Algonquin [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  | 44.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Algonquin [Member] | Amherst Island [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments carried under the equity method |  |  |  |  |  |  | $ 92,300 |  |  |  |  |  |  |  |  |  |  |  |
Algonquin [Member] | La Sierpe [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installed capacity | MW |  |  |  |  |  |  |  |  | 30 |  |  |  |  |  |  |  |  |  |

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