The Covatillas portfolio comprises three solar PV plants. Credit: Pixelci/Shutterstock.

Renewable energy developer Sonnedix has agreed provide 420 gigawatt hours (GWh) of renewable energy per year for Spanish rail network operator, Renfe.

The power purchase agreement (PPA) follows the recent inauguration of Sonnedix’s 150MW Covatillas 1, 5 and 6 portfolio.

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The three plants are situated in the municipalities of Minglanilla, Graja de Iniesta, and Puebla de Salvador, in Cuenca, Spain.

Sonnedix will deliver a portion of its output to Renfe, as well as the electricity generated by the Portachuelo portfolio in Toledo.

The PPA will help Renfe meet a substantial amount of its total predicted energy requirements, supporting the national rail operator’s sustainability targets.

Renfe economic and financial general director Marta Torralvo stated: “This agreement represents a new step in Renfe’s energy management roadmap. This contract promotes renewable energy production projects while stabilising Renfe’s energy prices, which we consider very positive for the company’s management.”

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Torralvo pointed out the importance of predictability in energy costs against the backdrop of high volatility in energy prices.

The 300-hectare Covatillas portfolio comprises three solar photovoltaic (PV) plants that generate 300,000 megawatt hours (MWh) of renewable energy annually, powering 71,000 homes and preventing more than 108,000mt of CO₂ emissions.

Sonnedix chief commercial officer Gregorio Morales Schmid stated: “The electricity we provide is generated from our portfolio of solar assets in Spain, which we are progressively expanding through the integration of battery storage and wind power. This diversification enables us to offer more tailored power profiles and deliver high-value-added services that respond to the evolving needs of our clients.”

Sonnedix has a total project portfolio of more than 11.68GW, including 1.15GW under construction and a 6.7GW development pipeline in Chile, France, Germany, Japan and the US. 

In November 2024, Sonnedix launched the 150MW Betierra project in Castilla-La Mancha, Cuenca, in Spain’s central-eastern region.

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