Metlen Sells 165 MW Tamarico II Solar-Plus-Storage Project to Copec in Chile’s Atacama Region

Greek energy developer Metlen Energy & Metals has signed an agreement with Chilean utility Copec S.A., through subsidiary Copec Flux S.p.A., to sell the Tamarico II hybrid renewable energy project located in Chile’s Atacama Region. The project combines 165 MW of solar photovoltaic capacity with a 725 MWh battery energy storage system, expandable to 925 MWh. Metlen did not disclose the transaction value.

The sale represents Metlen’s asset rotation model, under which the company develops and constructs renewable projects before divesting them to monetize value. Metlen previously applied this strategy in Chile with a $815 million sale to Glenfarne in April 2025 covering a portfolio of solar and storage assets. The Tamarico II transaction marks the latest phase of collaboration between Metlen and the Copec Group, which began three years ago. In July 2025, Metlen signed a 15-year power purchase agreement with Copec EMOAC to supply 450 GWh annually from four Chilean solar plants backed by 322 MW of battery storage, with deliveries scheduled from the second quarter of 2026.

Originally submitted for environmental assessment in January 2024 by Celtic Group under the name Tamarico Phase II, the project initially proposed 169.02 MW DC solar capacity and 159.6 MW AC nominal capacity. The original filing included 281,700 bifacial photovoltaic modules across 378 hectares, a 33/220 kV substation, and a 2.34 km transmission line, with declared investment of $250 million. Current specifications provided by Metlen list 165 MW solar and 725 MWh storage, with optional expansion to 925 MWh.

Copec CEO Arturo Natho stated the acquisition advances the company’s strategy to consolidate a renewable generation and energy storage portfolio, supporting expanded customer solutions and clean energy integration into the national grid. For Copec, Tamarico II becomes the third large-scale solar park acquired since 2024, following the 123 MW Granja Solar project in Tarapacá and the 87 MW La Huella project in Coquimbo purchased in July 2026. Including distributed generation assets, Copec now controls 550 MW of solar capacity.

Metlen operates the first phase of Tamarico, a 167 MW solar plant in Vallenar, Atacama, inaugurated in December 2024 alongside the 227 MW Tocopilla park in Antofagasta. Those projects brought Metlen’s operational Chilean photovoltaic portfolio to 589.2 MW. According to the agreement, Copec Flux will acquire 100 percent of the entity owning Tamarico II once commercial operation begins, with Copec Emoac handling energy commercialization.