Atlas Renewable Energy and Colbún Sign Agreement for Pioneering Battery Storage Project

image from ATLAS RENEWABLE ENERGY

Atlas Renewable Energy and Colbún S.A. have signed a 15-year energy purchase agreement for a pioneering battery energy storage system (BESS) project. Atlas will build the BESS system, while Colbún will purchase the energy generated, estimated at up to 335 GWh annually—enough to power around 140,000 homes. This energy will help Colbún maintain a steady supply of renewable power for its customers.

Located in María Elena, Antofagasta Region, the Stand-Alone BESS project will feature 230 MW of installed capacity and 920 MWh of daily storage (four hours). The energy will be injected into the Crucero 220 kV Substation, with commercial operations expected to begin in 2027.

This agreement marks a major step in integrating storage solutions into Chile’s energy matrix, enabling efficient use of renewable energy during periods of high demand. It optimizes the use of excess energy produced during the day, enhancing system efficiency.

“We are excited to partner with Colbún on this project, reaffirming our commitment to advancing innovative solutions for Chile’s energy transition,” said Alfredo Solar, Regional Manager for Atlas Renewable Energy. “This BESS project is the second of its kind in the region, adding to our growing portfolio of storage plants designed to ensure renewable energy is available when demand peaks, improving the reliability of the National Electric System.”

Colbún’s CEO, José Ignacio Escobar, added, “To ensure a responsible energy transition, we need storage systems to address renewable energy intermittency. This agreement is an important step forward and complements Colbún’s other battery and hydroelectric projects, which have historically played a crucial role in energy storage.”

The collaboration between Atlas and Colbún will significantly boost the efficiency of the National Electric System (SEN) and help optimize Chile’s energy transition through the development of advanced storage solutions.