Copenhagen Infrastructure Partners (CIP), via its Growth Markets Fund II (GMF II), has announced the final notice to proceed (FNTP) for the 300MW/1,500MW-hour Patache project in Chile.

The authorisation allows construction to commence under the primary supply and construction agreements, marking a significant milestone for the project.

This development marks CIP's second large-scale battery energy storage system (BESS) in the region, signalling its ongoing investment in Latin American energy infrastructure.

Patache is positioned in an area with efficient solar resources, close to existing transmission systems and industrial sectors.

It is designed to store surplus solar energy generated during the day and provide electricity during peak demand periods.

This capability will reduce reliance on thermal energy sources, decrease CO₂ emissions and facilitate the integration of large-scale solar energy into Chile's power grid.

The project is also recognised within an international carbon offset programme, supporting Chile's long-term decarbonisation efforts.

CIP Latin America head and managing director Peter Halmø said: “Reaching FNTP for Patache is an important step for the project and for GMF II.

“It reflects the strength of the underlying fundamentals, the close collaboration with our contractors and partners, and our continued confidence in Chile as a key market for energy storage and grid infrastructure.

“We are proud to move into the construction phase and to contribute to the delivery of a more resilient and efficient power system.”

The investment includes a consortium of co-investors who hold a minority interest in the venture.

The Patache project expands on the insights gained from CIP's Arena BESS project, a 220MW/1.1GW-hour (GWh) system in Chile's Antofagasta region, which is now operational and supplying electricity to the grid.

CIP partner Ole Kjems Sørensen said: “Projects like Patache and Arena BESS are great examples of the Growth Markets funds’ commitment and long-term strategy to invest in high-growth, middle-income markets such as Chile.

“By developing robust energy infrastructure, we aim to create value for our investors while supporting a cost-effective transition to more sustainable energy systems.”

In August 2025, CIP acquired 100% ownership of the Beehive BESS, a 1GWh project in Arizona, US, from EDF Power Solutions North America.