v3.10.0.1

Related parties (Details) - USD ($) $ in Thousands					1 Months Ended					12 Months Ended
	Mar. 09, 2018	Nov. 30, 2017	Oct. 31, 2017	Feb. 24, 2017	Nov. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Nov. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 27, 2018	Feb. 28, 2017
Non-controlling ownership interest [Abstract]
Additional ownership interests acquired														12.50%
Details of Balances [Abstract]
Total non-current payables with related parties								$ 141,031		$ 33,675	$ 141,031
Income from the purchase of the long-term operation and maintenance payable										38,955	0	$ 0
Transactions With Related Party [Abstract]
Financial income										36,444	1,007	3,298
Financial expenses										$ (425,019)	(463,717)	(408,007)
Dividends retained from Abengoa				$ 10,400
Solana [Member]
Transactions With Related Party [Abstract]
Fair value of land received					$ 7,300
Algonquin [Member]
Non-controlling ownership interest [Abstract]
Additional ownership interests acquired													16.47%
Ownership interest	25.00%								25.00%	41.47%
Related Parties [Member]
Details of Balances [Abstract]
Total current receivables with related parties								11,567		$ 5,328	11,567
Total non-current receivables with related parties								2,108		0	2,108
Total current payables with related parties								63,409		19,352	63,409
Total non-current payables with related parties								141,031		33,675	141,031
Transactions With Related Party [Abstract]
Dividends retained from Abengoa											10,400	28,000
Income for cancellation of subordinated debt												7,600
Income for discounts received for prepayment of payables												1,700
Subsidiaries [Member]
Transactions With Related Party [Abstract]
Services rendered										0	3,495	1,220
Services received										(101,582)	(114,416)	(115,779)
Financial income										3,721	74	60
Financial expenses										(398)	(1,154)	$ (2,460)
Abengoa [Member]
Details of Balances [Abstract]
Accrued Operation and Maintenance payable								57,300		35,300	$ 57,300
Payment for debt extinguishment										18,300
Income from the purchase of the long-term operation and maintenance payable										$ 39,000
Transactions With Related Party [Abstract]
Term to maintain guarantees and letters of credit										5 years
Guarantees amount										$ 23,000
Guarantees amount replaced						$ 112,000
Guarantees amount, canceled						$ 55,000
Abengoa [Member] | Solana [Member]
Transactions With Related Party [Abstract]
Performance consideration received		$ 120,000							$ 120,000
Performance obligations proceeds received from Abengoa					16,500		$ 77,500	$ 42,500
Performance obligations proceeds applied to project debt		95,000			9,000				95,000
Other obligations		$ 25,000			7,500				$ 25,000
Agreed amount to fund reserve account in year 2020 and 2021					13,000
Abengoa [Member] | Solana [Member] | First 2 Years [Member]
Transactions With Related Party [Abstract]
Long-term payments payable					7,400
Abengoa [Member] | Solana [Member] | Subsequent 4 Years [Member]
Transactions With Related Party [Abstract]
Long-term payments payable					$ 10,300
Abengoa [Member] | Solana and Mojave [Member]
Transactions With Related Party [Abstract]
Minimum ownership requirement percentage		16.00%	30.00%

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Dividends retained from Abengoa related to the preferred equity investment in Abengoa Concessoes Brasil Holding (ACBH), which is a subsidiary of Abengoa engaged in the development, construction, investment and management of contracted concessions in Brazil, comprised mostly of transmission lines. Retention is based on the underlying investment agreement supported by the additional agreement reached with Abengoa in the third quarter of 2016.

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The amount of finance income related to the cancellation of subordinated debt Solnova Electricidad S.A. owed to Abener, a subsidiary of Abengoa.

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The amount of finance income for discounts received from Abengoa for the prepayment of payables.

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This element represents income from the purchase and settlement of the long-term operation and maintenance payable.

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The canceled amount of guarantees previously issued by a related party related to operations of technical nature.

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Refers to guarantees issued by a related party on behalf of or for the benefit of the entity.

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Amount of the required periodic payments including both interest and principal payments to be paid beyond one year.

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The minimum percentage of ownership in a concessional asset required that will trigger a change of ownership clause for project financing arrangements.

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The amount of trade payables related to long-term operation and maintenance services.

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The cash outflow for the payment of accrued long-term operation and maintenance payable.

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The amount of consideration received by Solana as a performance compensation conditioned by a signed consent with DOE.

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The estimated amount of project debt to be prepaid from performance obligations proceeds.

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The performance obligations proceeds received resulting from related party transactions.

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- Definition

The provision for funding a reserve account for the purpose of meeting contractual obligations.

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No definition available.

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- Definition

The proportion of ownership interests in the entity held by non-controlling interests.

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- Definition

Refers to the replacement amount of guarantees previously issued by Abengoa related to operations of technical nature.

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No definition available.

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Period of time Abengoa agreed to maintain any guarantees and letters of credit under a revolving credit line in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of costs associated with financing activities of the entity.

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The amount of income associated with interest and other financing activities of the entity.

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The amount of non-current payables due to related parties. [Refer: Related parties [member]; Payables to related parties]

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The amount of non-current receivables due from related parties. [Refer: Related parties [member]]

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The amount of liabilities that the entity does not separately disclose in the same statement or note.

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The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

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The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period.

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The amount of revenue arising from the rendering of services in related party transactions. [Refer: Revenue; Related parties [member]]

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The amount of services received in related party transactions. [Refer: Related parties [member]]

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The amount of current payables due to related parties. [Refer: Related parties [member]; Payables to related parties]

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The amount of current receivables due from related parties. [Refer: Related parties [member]]

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