v3.10.0.1

Nature of the business, Concessional assets owned (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2016 | Sep. 30, 2013
Nature of the business [Abstract] |  |  |  |
Ownership interest type | [1] | Class B |  |
ACT [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Efficient natural gas |  |
Ownership |  | 100.00% |  |
Location |  | Mexico |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 300 MW |  |
Counterparty credit ratings | [3] | BBB+/ Baa3/BBB+ |  |
COD |  | 2013 |  |
Contract years left | [4] | 14 years |  |
ATN [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type | [5] | Transmission line |  |
Ownership |  | 100.00% |  |
Location |  | Peru |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 365 miles |  |
Counterparty credit ratings | [3] | BBB+/A3/BBB+ |  |
COD |  | 2011 |  |
Contract years left | [4] | 22 years |  |
ATS [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Transmission line |  |
Ownership |  | 100.00% |  |
Location |  | Peru |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 569 miles |  |
Counterparty credit ratings | [3] | BBB+/A3/BBB+ |  |
COD |  | 2014 |  |
Contract years left | [4] | 25 years |  |
ATN2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Transmission line |  |
Ownership |  | 100.00% |  |
Location |  | Peru |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 81 miles |  |
Counterparty credit ratings | [3] | Not rated |  |
COD |  | 2015 |  |
Contract years left | [4] | 14 years |  |
Quadra 1 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Transmission line |  |
Ownership |  | 100.00% |  |
Location |  | Chile |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 49 miles |  |
Counterparty credit ratings | [3] | Not rated |  |
COD |  | 2014 |  |
Contract years left | [4] | 16 years |  |
Quadra 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Transmission line |  |
Ownership |  | 100.00% |  |
Location |  | Chile |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 32 miles |  |
Counterparty credit ratings | [3] | Not rated |  |
COD |  | 2014 |  |
Contract years left | [4] | 16 years |  |
Palmucho [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Transmission line |  |
Ownership |  | 100.00% |  |
Location |  | Chile |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 6 miles |  |
Counterparty credit ratings | [3] | BBB+/Baa1/BBB+ |  |
COD |  | 2007 |  |
Contract years left | [4] | 19 years |  |
Chile TL3 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Transmission line |  |
Ownership |  | 100.00% |  |
Location |  | Chile |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 50 miles |  |
Counterparty credit ratings | [3] | A+/A1/A |  |
COD |  | 1993 |  |
Skikda [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Water |  |
Ownership | [6] | 34.20% |  |
Location |  | Algeria |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 3.5 M ft3/day |  |
Counterparty credit ratings | [3] | Not rated |  |
COD |  | 2009 |  |
Contract years left | [4] | 15 years |  |
Skikda [Member] | Algerian Energy Company, SPA [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 49.00% |  |
Skikda [Member] | Valoriza Agua, S.L. [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 16.83% |  |
Honaine [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Water |  |
Ownership | [7] | 25.50% |  |
Location |  | Algeria |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 7 M ft3/day |  |
Counterparty credit ratings | [3] | Not rated |  |
COD |  | 2012 |  |
Contract years left | [4] | 19 years |  |
Honaine [Member] | Algerian Energy Company, SPA [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 49.00% |  |
Honaine [Member] | Valoriza Agua, S.L. [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 25.50% |  |
PS10/PS20 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership |  | 100.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 31 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2007 & 2009 |  |
PS10 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 13 years |  |
PS20 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 15 years |  |
Solana [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership |  | 100.00% |  |
Location |  | Arizona (USA) |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 280 MW |  |
Counterparty credit ratings | [3] | A-/A2/A- |  |
COD |  | 2013 |  |
Contract years left | [4] | 25 years |  |
Solana [Member] | Liberty Interactive Corporation [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Class A membership investment |  |  |  | $ 300
Mojave [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership |  | 100.00% |  |
Location |  | California (USA) |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 280 MW |  |
Counterparty credit ratings | [3] | D/WR/D |  |
COD |  | 2014 |  |
Contract years left | [4] | 21 years |  |
Solaben 2 & 3 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership | [8] | 70.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 2x50 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2012 |  |
Solaben 2 & 3 [Member] | Itochu Corporation [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 30.00% |  |
Solaben 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 19 years |  |
Solaben 3 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 18 years |  |
Solacor 1 & 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership | [9] | 87.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 2x50 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2012 |  |
Solacor 1 & 2 [Member] | JGC [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Ownership |  |  | 13.00% |
Percentage of non-controlling interests |  | 13.00% |  |
Solacor 1 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 18 years |  |
Solacor 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 18 years |  |
Helioenergy 1 & 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership |  | 100.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 2x50 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2011 |  |
Helioenergy 1 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left |  | 18 years |  |
Helioenergy 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left |  | 18 years |  |
Helios 1 & 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership |  | 100.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 2x50 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2012 |  |
Helios 1 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left |  | 19 years |  |
Helios 2 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left |  | 19 years |  |
Solnova 1, 3 & 4 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership |  | 100.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 3x50 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2010 |  |
Solnova 1 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 16 years |  |
Solnova 3 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 16 years |  |
Solnova 4 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left | [4] | 17 years |  |
Solaben 1 & 6 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership |  | 100.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 2x50 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2013 |  |
Solaben 1 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left |  | 20 years |  |
Solaben 6 [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Contract years left |  | 20 years |  |
Kaxu [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership | [10] | 51.00% |  |
Location |  | South Africa |  |
Currency | [2] | Rand |  |
Capacity (gross) |  | 100 MW |  |
Counterparty credit ratings | [3],[11] | BB/Baa3/BB+ |  |
COD |  | 2015 |  |
Contract years left | [4] | 16 years |  |
Kaxu [Member] | IDC [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 29.00% |  |
Kaxu [Member] | Kaxu Community Trust [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 20.00% |  |
Palmatir [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Wind) |  |
Ownership |  | 100.00% |  |
Location |  | Uruguay |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 50 MW |  |
Counterparty credit ratings | [3],[12] | BBB/Baa2/BBB- |  |
COD |  | 2014 |  |
Contract years left | [4] | 15 years |  |
Cadonal [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Wind) |  |
Ownership |  | 100.00% |  |
Location |  | Uruguay |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 50 MW |  |
Counterparty credit ratings | [3],[12] | BBB/Baa2/BBB- |  |
COD |  | 2014 |  |
Contract years left | [4] | 16 years |  |
Seville PV [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Solar) |  |
Ownership | [13] | 80.00% |  |
Location |  | Spain |  |
Currency | [2] | Euro |  |
Capacity (gross) |  | 1 MW |  |
Counterparty credit ratings | [3] | A-/Baa1/A- |  |
COD |  | 2006 |  |
Contract years left | [4] | 17 years |  |
Seville PV [Member] | Idae [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Percentage of non-controlling interests |  | 20.00% |  |
Melowind [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Wind) |  |
Ownership | [7] | 100.00% |  |
Location |  | Uruguay |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 50MW |  |
Counterparty credit ratings | [3] | BBB/Baa2/BBB- |  |
COD |  | 2015 |  |
Contract years left | [4] | 17 years |  |
Mini-Hydro [Member] |  |  |  |
Nature of the business [Abstract] |  |  |  |
Type |  | Renewable (Hydraulic) |  |
Ownership | [13] | 100.00% |  |
Location |  | Peru |  |
Currency | [2] | USD |  |
Capacity (gross) |  | 4 MW |  |
Counterparty credit ratings | [3] | BBB+/A3/ BBB+- |  |
COD |  | 2012 |  |
Contract years left | [4] | 14 years |  |
[1] | On September 30, 2013, Liberty Interactive Corporation agreed to invest $300 million in Class A shares of ASO Holdings Company LLC, the holding company of Solana, in exchange for a share of the dividends and the taxable losses generated by Solana.
[2] | Certain contracts denominated in U.S. dollars are payable in local currency.
[3] | Reflects the counterparty's credit ratings issued by Standard & Poor's Ratings Services, or S&P, Moody's Investors Service Inc., or Moody's, and Fitch Ratings Ltd, or Fitch.
[4] | As of December 31, 2018.
[5] | Including the acquisition of ATN expansion 1.
[6] | Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.83%.
[7] | Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%.
[8] | Itochu Corporation, a Japanese trading company, holds 30% of the shares in each of Solaben 2 and Solaben 3.
[9] | JGC, a Japanese engineering company, holds 13% of the shares in each of Solacor 1 and Solacor 2.
[10] | Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%).
[11] | Refers to the credit rating of the Republic of South Africa. The offtaker is Eskom, which is a state-owned utility company in South Africa.
[12] | Refers to the credit rating of Uruguay, as UTE (Administracion Nacional de Usinas y Transmisoras Electricas) is unrated.
[13] | 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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