v3.10.0.1

Nature of the business, Assets acquired (Details) $ in Millions |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 14, 2018 USD ($) MW | Dec. 11, 2018 USD ($) kV | Feb. 28, 2018 USD ($) MW | Feb. 28, 2017 mi | Dec. 31, 2018 | Dec. 31, 2016 MW | Dec. 28, 2018 USD ($) | Oct. 10, 2018 USD ($)
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  | 12.50% |  |  |  |
Length of transmission lines | mi |  |  |  |  | 114 |  |  |  |
Chile TL3 [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Gross capacity | kV |  |  | 66 |  |  |  |  |  |
Acquisition purchase price |  |  | $ 6 |  |  |  |  |  |
Ownership interest |  |  |  |  |  | 100.00% |  |  |
ATN [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Acquisition purchase price |  |  |  |  |  |  |  | $ 16 |
Ownership interest |  |  |  |  |  | 100.00% |  |  |
Mini- Hydro [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  | 100.00% |  |  |  |  |
Gross capacity | MW |  |  |  | 4 |  |  |  |  |
Acquisition purchase price |  |  |  | $ 9 |  |  |  |  |
Melowind [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Percentage interest acquired |  | 100.00% |  |  |  |  |  |  |
Gross capacity | MW |  | 50 |  |  |  |  |  |  |
Acquisition purchase price |  | $ 45 |  |  |  |  |  |  |
Ownership interest | [1] |  |  |  |  | 100.00% |  |  |
Solacor 1/2 [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  |  | 13.00% |  |
Ownership interest | [2] |  |  |  |  | 87.00% |  |  |
Seville PV [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  |  | 80.00% |  |
Gross capacity | MW |  |  |  |  |  |  | 1 |  |
Ownership interest | [3] |  |  |  |  | 80.00% |  |  |
JGC [Member] | Solacor 1/2 [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  |  | 13.00% |  |
PTS [Member] |  |  |  |  |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |  |  |  |  |
Percentage interest acquired |  |  |  |  |  |  |  |  | 5.00%
Acquisition purchase price |  |  |  |  |  |  |  |  | $ 7
[1] | Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%.
[2] | JGC, a Japanese engineering company, holds 13% of the shares in each of Solacor 1 and Solacor 2.
[3] | Instituto para la Diversificacion y Ahorro de la Energia ("Idae"), a Spanish state owned company, holds 20% of the shares in Seville PV.

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