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HidroAysén

hydroelectric project in Chile

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 9, 2026
Entity authorityQ3785491
Source-derived summary

HidroAysén (Pronounced: EE-droh EYE-sen ) was a controversial megaproject that aimed to build five hydroelectric power plants in Chile's Aysén Region, two on the Baker River and three on the Pascua River (with government subvention included to help relief costs). Planned for construction during the 2010s, the project was definitely cancelled by its contractors in November 2017.

The total expected installed power was 2,750 MW, generating an average 18,430 gigawatt-hours (66,300 TJ) per year, which corresponds to 21% of Central Interconnected System's (SIC) demand by 2020. A 3,000 high-voltage direct current line would have been built between Aysén and the capital Santiago to feed the SIC, including a submarine portion between Chaitén and Puerto Montt. The projected cost was estimated at 3.2 billion U.S. dollars (1.5 trillion Chilean pesos), and would have employed 5,000 workers from Chile and abroad, making it the largest energy project in the country's history.

HidroAysén is owned by a corporation which is a joint venture between Endesa (a subsidiary of Italian conglomerate ENEL), with a 51% stake and by Colbún S.A. which owns the other 49%.

History

The dams were approved on May 9, 2011, under the government of President Sebastián Piñera. The decision was made by eleven counselors on a committee. Ten voted in favor, with one abstention. Twenty-seven days earlier the Foreign Investment Committee was already aware of the decision ahead of time.

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The public source identifies “HidroAysén” as hydroelectric project in Chile. This brief keeps that definition visible, then builds a research path around HidroAysén, hydroelectric and project.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2017, 2020, 2011—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with HidroAysén, hydroelectric and project providing the first useful test.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 9, 2026. The linked authority identifier is Q3785491. Authority coordinates are -45.567, -72.067. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2017, 2020 and 2011.

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This entry incorporates text from HidroAysén” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.