v3.8.0.1

Nature of the business, Concessional assets owned (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 07, 2016 | Sep. 30, 2013 | Dec. 31, 2017 | Dec. 31, 2016
ACT [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Efficient natural gas |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Mexico |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 300 MW |
Counterparty credit ratings | [2] |  |  | BBB+/A3/BBB+ |
COD | [3] |  |  | 2Q 2013 |
Contract years left | [4] |  |  | 15 years |
ATN [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Transmission line |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Peru |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 362 miles |
Counterparty credit ratings | [2] |  |  | BBB+/A3/BBB+ |
COD | [3] |  |  | 1Q 2011 |
Contract years left | [4] |  |  | 23 years |
ATS [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Transmission line |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Peru |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 569 miles |
Counterparty credit ratings | [2] |  |  | BBB+/A3/BBB+ |
COD | [3] |  |  | 1Q 2014 |
Contract years left | [4] |  |  | 26 years |
ATN2 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Transmission line |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Peru |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 81 miles |
Counterparty credit ratings | [2] |  |  | Not rated |
COD | [3] |  |  | 2Q 2015 |
Contract years left | [4] |  |  | 15 years |
Quadra 1 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Transmission line |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Chile |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 49 miles |
Counterparty credit ratings | [2] |  |  | Not rated |
COD | [3] |  |  | 2Q 2014 |
Contract years left | [4] |  |  | 17 years |
Quadra 2 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Transmission line |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Chile |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 32 miles |
Counterparty credit ratings | [2] |  |  | Not rated |
COD | [3] |  |  | 1Q 2014 |
Contract years left | [4] |  |  | 17 years |
Palmucho [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Transmission line |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Chile |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 6 miles |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/BBB+ |
COD | [3] |  |  | 4Q 2007 |
Contract years left | [4] |  |  | 20 years |
Skikda [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Water |
Ownership | [5] |  |  | 34.20% |
Location |  |  |  | Algeria |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 3.5 M ft3/day |
Counterparty credit ratings | [2] |  |  | Not rated |
COD | [3] |  |  | 1Q 2009 |
Contract years left | [4] |  |  | 16 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 | [6] |  |  | 25.50% |
Location |  |  |  | Algeria |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 7 M ft3/day |
Counterparty credit ratings | [2] |  |  | Not rated |
COD | [3] |  |  | 3Q 2012 |
Contract years left | [4] |  |  | 20 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 | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 31 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 1Q 2007 & 2Q 2009 |
PS10 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Contract years left | [4] |  |  | 14 years |
PS20 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Contract years left | [4] |  |  | 16 years |
Solana [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership |  |  |  | 100.00% |
Ownership interest type | [7] |  |  | Class B |
Location |  |  |  | Arizona (USA) |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 280 MW |
Counterparty credit ratings | [2] |  |  | A-/A3/A- |
COD | [3] |  |  | 4Q 2013 |
Contract years left | [4] |  |  | 26 years |
Solana [Member] | Liberty Interactive Corporation [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Class A membership investment |  |  | $ 300,000 |  |
Percentage of dividends and taxable loss once certain conditions met |  |  | 22.60% |  |
Solana [Member] | Liberty Interactive Corporation [Member] | Bottom of Range [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Percentage of dividends and taxable loss received |  |  | 54.06% |  |
Solana [Member] | Liberty Interactive Corporation [Member] | Top of Range [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Percentage of dividends and taxable loss received |  |  | 61.20% |  |
Mojave [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership |  |  |  | 100.00% |
Location |  |  |  | California (USA) |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 280 MW |
Counterparty credit ratings | [2] |  |  | A-/A3/A- |
COD | [3] |  |  | 4Q 2014 |
Contract years left | [4] |  |  | 22 years |
Solaben 2 & 3 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership | [8] |  |  | 70.00% |
Location |  |  |  | Spain |
Currency | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 2x50 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 3Q 2012 & 2Q 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] |  |  | 20 years |
Solaben 3 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Contract years left | [4] |  |  | 19 years |
Solacor 1 & 2 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership | [9] |  |  | 87.00% |
Location |  |  |  | Spain |
Currency | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 2x50 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 1Q 2012 & 1Q 2012 |
Contract years left | [4] |  |  | 19 years |
Solacor 1 & 2 [Member] | JGC [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Ownership |  | 13.00% |  |  | 13.00%
Percentage of non-controlling interests |  |  |  | 13.00% |
Helioenergy 1 & 2 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Spain |
Currency | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 2x50 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 3Q 2011 & 4Q 2011 |
Contract years left | [4] |  |  | 19 years |
Helios 1 & 2 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Spain |
Currency | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 2x50 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 3Q 2012 & 3Q 2012 |
Contract years left | [4] |  |  | 20 years |
Solnova 1, 3 & 4 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Spain |
Currency | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 3x50 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 2Q 2010 & 2Q 2010 & 3Q 2010 |
Solnova 1 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Contract years left | [4] |  |  | 17 years |
Solnova 3 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Contract years left | [4] |  |  | 17 years |
Solnova 4 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Contract years left | [4] |  |  | 18 years |
Solaben 1 & 6 [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Spain |
Currency | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 2x50 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 3Q 2013 |
Contract years left | [4] |  |  | 21 years |
Kaxu [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership | [10] |  |  | 51.00% |
Location |  |  |  | South Africa |
Currency | [1] |  |  | Rand |
Capacity (gross) |  |  |  | 100 MW |
Counterparty credit ratings | [2],[11] |  |  | BB/Baa3/BB+ |
COD | [3] |  |  | 1Q 2015 |
Contract years left | [4] |  |  | 17 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 | [1] |  |  | USD |
Capacity (gross) |  |  |  | 50 MW |
Counterparty credit ratings | [2],[12] |  |  | BBB/Baa2/BBB- |
COD | [3] |  |  | 2Q 2014 |
Contract years left | [4] |  |  | 16 years |
Cadonal [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Wind) |
Ownership |  |  |  | 100.00% |
Location |  |  |  | Uruguay |
Currency | [1] |  |  | USD |
Capacity (gross) |  |  |  | 50 MW |
Counterparty credit ratings | [2],[12] |  |  | BBB/Baa2/BBB- |
COD | [3] |  |  | 4Q 2014 |
Contract years left | [4] |  |  | 17 years |
Seville PV [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Type |  |  |  | Renewable (Solar) |
Ownership | [13] |  |  | 80.00% |
Location |  |  |  | Spain |
Currency | [1] |  |  | Euro |
Capacity (gross) |  |  |  | 1 MW |
Counterparty credit ratings | [2] |  |  | BBB+/Baa2/A- |
COD | [3] |  |  | 3Q 2006 |
Contract years left | [4] |  |  | 18 years |
Seville PV [Member] | Idae [Member] |  |  |  |  |
Nature of the business [Abstract] |  |  |  |  |
Percentage of non-controlling interests |  |  |  | 20.00% |
[1] | Certain contracts denominated in U.S. dollars are payable in local currency.
[2] | 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.
[3] | Commercial Operation Date ("COD").
[4] | As of December 31, 2017.
[5] | Algerian Energy Company, SPA owns 49% of Skikda and Valoriza Agua, S.L. owns the remaining 16.83%.
[6] | Algerian Energy Company, SPA owns 49% of Honaine and Valoriza Agua, S.L. owns the remaining 25.5%.
[7] | On September 30, 2013, Liberty Interactive Corporation invested $300,000 thousand in Class A membership interests in exchange for a share of the dividends and taxable loss generated by Solana. As a result of the agreement, Liberty Interactive Corporation will receive between 54.06% and 61.20% of both dividends and taxable loss generated during a period of approximately five years; such percentage will decrease to 22.60% thereafter.
[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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