Metlen sells 725 MWh BESS project in Chile to Copec

Greek energy company Metlen has agreed to sell the Tamarico II hybrid solar and battery project in Chile’s Atacama region to Copec subsidiary Copec Flux. The project includes 165 MW of PV and 725 MWh of battery storage, with potential to expand the BESS to 925 MWh.

Metlen said the transaction forms part of its asset rotation strategy, under which it develops and builds renewable energy projects before selling them. The company did not disclose the value of the deal.

The transaction expands the relationship between Metlen and Copec. In July 2025, Metlen signed a 15-year power purchase agreement with Copec EMOAC covering 450 GWh of annual solar generation from four Chilean plants, backed by 322 MW of Metlen battery storage.

Tamarico II was originally presented as Tamarico Phase II. Celtic Group submitted the project for environmental assessment in January 2024, with 169.02 MWdc of PV capacity, 159.6 MWac of nominal capacity and an unspecified lithium-ion BESS.

The original proposal included 281,700 bifacial solar modules across 378 hectares, a 33/220 kV substation and an approximately 2.34 km, 220 kV transmission line. It reported an investment of $250 million.

Metlen’s latest figures for Tamarico II are 165 MW of PV and 725 MWh of battery storage, with the option to increase storage capacity to 925 MWh.

Copec CEO Arturo Natho said the transaction supports the company’s strategy to build its own renewable generation and energy storage portfolio. Metlen said the companies have worked together for three years and could expand their partnership through further renewable energy and storage investments in Chile.

Metlen also operates the first phase of Tamarico, a 167 MW solar plant in Vallenar, Atacama, which it inaugurated in December 2024 alongside the 227 MW Tocopilla solar plant in Antofagasta. The two projects brought Metlen’s operating PV portfolio in Chile to 589.2 MW at the time.

From pv magazine LatAm