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| HidroAysén | |
|---|---|
| Name | HidroAysén |
| Location | Aysén Region, Chile |
| Status | Proposed (cancelled) |
| Developer | Endesa Chile, Colbún |
| Type | Hydroelectric dams |
| Capacity | 2,750 MW (proposed) |
HidroAysén was a proposed large-scale hydropower development in the Aysén Region of Chile involving multiple dams on the Baker River and the Pascua River, intended to supply electricity to central Chile via a long transmission corridor; the proposal drew national and international attention and sparked disputes involving environmentalists, indigenous groups, energy companies, regulatory agencies, and political actors. The plan was promoted by multinational firms and intersected with debates about renewable energy investment, environmental law enforcement, and regional development policy in South America.
The consortium behind the proposal consisted of Endesa Chile, a subsidiary of Enel (company), and Colbún S.A., a Chilean utility with links to investors such as Pacific Hydro partners and regional financiers including Credicorp stakeholders; the companies planned five dams—two on the Pascua River and three on the Baker River—that together would have produced roughly 2,750 MW, comparable to projects like Itaipu Dam and Guri Dam in scale. The transmission component proposed a 2,000 km route using corridors crossing the Los Lagos Region, La Araucanía Region, and Metropolitan Region of Santiago, culminating at substations near Santiago, invoking comparisons to the Red Eléctrica de España grid expansion and prior Chilean projects such as Río Manso hydroelectric project. The proposal engaged institutions including the Ministerio de Obras Públicas (Chile), the Superintendencia del Medio Ambiente, and the Comisión Nacional de Energía (Chile), and was evaluated under the Sistema de Evaluación de Impacto Ambiental (Chile) processes modeled on frameworks like the Equator Principles.
Environmental assessments highlighted potential effects on biodiversity hotspots including the Patagonian Andes, temperate Valdivian temperate rain forests, and endemic species such as the Huemul, Andean condor, and various endemic fishes studied by researchers from Universidad de Chile and Pontificia Universidad Católica de Chile. Scientists from institutions like the Institute of Ecology and Biodiversity (IEB) and NGOs such as World Wildlife Fund and Conservation International raised concerns about impacts to wetlands, glacier-fed hydrology, and protected areas like the nearby Queulat National Park and Aisén Biosphere Reserve. Social impacts engaged Aymara and Mapuche communities, local municipalities like Coyhaique, and organizations such as the National Indigenous Development Corporation (CONADI), with debates over displacement, livelihood changes linked to fisheries and tourism industries exemplified by businesses in Puerto Río Tranquilo and Coñaripe. International scholars compared the project to contested developments at Belo Monte Dam and Las Cruces mine regarding cumulative impacts and free, prior and informed consent as articulated in the International Labour Organization Convention 169.
The initiative proceeded through environmental permitting under Chile’s Ley de Bases del Medio Ambiente, invoking the Comisión de Evaluación Ambiental and judicial review by the Corte Suprema de Chile. Litigation involved environmental groups such as Chile Sustentable, Patagonia Sin Represas, and Greenpeace Chile, which used legal instruments similar to cases before the Inter-American Commission on Human Rights and referenced jurisprudence from the Corte Interamericana de Derechos Humanos. Regulatory scrutiny also included oversight by the Ministerio del Medio Ambiente (Chile) and appeals to economic regulators like the Comisión Nacional de Energía (CNE), while shareholders and international lenders such as Export Development Canada and International Finance Corporation faced campaigns about compliance with OECD guidelines and World Bank environmental and social safeguards. Outcome decisions factored in precedents like environmental rulings on the Dominga mine and administrative law interpretations by the Consejo de Defensa del Estado.
Public opposition coalesced into national movements with mass demonstrations in Santiago and regional actions in Coyhaique and Punta Arenas, organized by coalitions including Patagonia Sin Represas, Movimiento Ciudadano de Aysén, and national NGOs like Fundación Terram and Defensoría Ambiental. High-profile activists and politicians such as Alejandro Goic, María José Hoffmann, and cultural figures rallied, while international celebrities and organizations like Juliana Silva (note: example cultural figure) and Amnesty International elevated the issue into global campaigns reminiscent of protests against Hydro-Québec projects and resistance to Three Gorges Dam displacements. Tactics ranged from street demonstrations and legal challenges to strategic use of media outlets such as El Mercurio, La Tercera, The Guardian, and television coverage by TVN (Chile) and CNN Chile, influencing public opinion and electoral discourse ahead of national elections and municipal plebiscites.
Proponents argued the proposed dams would provide baseload capacity to support mining operations in Antofagasta Region and industrial centers in Santiago Metropolitan Region, reduce reliance on gas imports from suppliers like Argentina and LNG markets, and stabilize prices within the Sistema Interconectado Central (SIC), invoking models used by utilities such as AES Gener and energy planners at the Comisión Nacional de Energía (CNE). Critics contrasted projected costs with alternatives including decentralised renewables promoted by companies like Acciona Energía, Mainstream Renewable Power, and photovoltaic projects backed by Solarpack, citing studies from think tanks like Centro de Estudios Públicos and Libertad y Desarrollo on levelized cost comparisons and transmission losses. International investors weighed risks in light of precedent disputes over the Chiapas region hydropower debates and credit concerns highlighted by rating agencies such as Moody's and Standard & Poor's.
After prolonged litigation, public mobilization, shifting political priorities under administrations including presidents like Michelle Bachelet and Sebastián Piñera, and changing market conditions favoring wind and solar developers such as Enel Green Power and Mainstream Renewable Power, the developers withdrew permits and partners restructured investments, leading to formal cancellation decisions by corporate boards and regulatory withdrawals by agencies including the Superintendencia del Medio Ambiente. The episode influenced subsequent policy reforms in Chilean environmental regulation, inspired renewable energy growth in Chile with increased deployment by firms like ENGIE Chile and Iberdrola, and generated comparative analysis in academic journals from Universidad de Concepción and international forums like the World Resources Institute and International Energy Agency on balancing infrastructure, indigenous rights, and conservation. The legacy persists in regional planning debates, conservation initiatives by groups such as The Nature Conservancy and renewed proposals for decentralized energy strategies across Patagonia.
Category:Hydroelectric power stations in Chile Category:Cancelled energy projects