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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- Definition

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