Colbún S.A. announces preventive spill at the Colbún Reservoir
Colbún S.A. will begin a preventive spill at the Colbún Reservoir on Thursday, August 27, at 9:00 a.m., starting with a limited flow of about 50 m3/s — roughly a 20% increase over the Maule River's current flow. With the reservoir at 98% capacity, the gradual, controlled operation is designed to free up storage ahead of rising inflows and forecast rainfall. Water released downstream will never exceed what the reservoir takes in. SENAPRED declared a Yellow Alert for San Clemente and Colbún on Tuesday the 25th, and the public is asked to stay away from the Maule's banks all the way to its mouth.
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Canutillar Power Plant Supplied 33% of Los Lagos' Energy in 2025 and Was Key During the February 25 Blackout
Colbún's Canutillar Power Plant, located in Cochamó, covered 33% of the Los Lagos Region's electricity consumption in 2025 — equivalent to nearly 300,000 households — with 172 MW installed. Its role was proven during the national blackout of February 25, 2025: as one of only two power plants in the country certified for black-start capability, it was among the first to resume operation without drawing power from the grid, helping Puerto Montt restore service ahead of other cities. The precedent matters now because the CEN warned in June 2026 of a possible shortfall between November 2026 and January 2027 for the Los Ríos and Los Lagos regions. For Colbún, the case shows that supply security depends on operational flexibility, not installed capacity alone.
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Colbún's renewable energy generation in Chile exceeded 70% in 2025
Colbún reported that its renewable generation in Chile hit a record 70.3% in 2025, above the 63% average for Chile's National Electric System, and that for the first time more than half of its consolidated installed capacity (Chile and Peru, 57%) is renewable. The gain rests on the Horizonte Wind Farm — the company's largest-ever investment — and on a growing base of renewable contracts, notably a 15-year, 1,100 GWh/year 100%-renewable supply deal with Codelco that avoids 266,000 tons of CO₂ annually. Since 2018 Colbún has cut its emissions factor by 41%, beating its 30% target, and it now supplies 24% of the electricity consumed by Chile's large-scale mining industry.
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Colbún Launched the Tenth Winter Campaign for Its Angostura Power Plant
Colbún marks 10 years of its awareness campaign about the Angostura plant (Santa Bárbara and Quilaco, running since 2014). As a run-of-river plant with no reservoir, it opens its gates when flow exceeds 700 m³/s — a normal, planned winter operation, not an emergency. It coordinates with DMC, DGA and SENAPRED, informs 70+ stakeholders, and works with local communities to ease concerns.
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Colbun.cl es reconocido como el mejor sitio web de energía 2023
Web Marketing Association fue creada en 1997 para resguardar un alto estándar para el marketing en Internet y el desarrollo web corporativo. En su versión XXIII, el jurado estuvo compuesto por profesionales de Google, IBM, BlackRock Investments, CNN News Group, McCann y EuroRSCG, entre otros.
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