The developer recently filed a technical report with Peru’s environmental certification agency Senace detailing equipment and design modifications to the three plants. At Limacpunco, Electro Araza eliminated the equilibrium chimney and reduced turbine count from three to two Pelton units while maintaining output through efficiency gains. The modifications also include reconfigured powerhouses, updated transformer specifications, and new operation and maintenance facilities. Ttio’s adjustments focus on penstock improvements and substation layout optimization, while Capiri incorporates an industrial wastewater treatment plant and relocates the turbine discharge point. All changes remain within previously approved environmental study boundaries, expanding the total project footprint by just 3.93 percent.
Construction will require 36 months with an operational lifespan of 75 years. The filing maintains the previously disclosed construction budget of approximately $452 million and annual operating costs of $2.18 million. The developer reports obtaining most required permits and securing over 98 percent of necessary land rights. Only the Capiri camp facility has been built to date, with transmission lines and most auxiliary components awaiting construction start. The three plants received definitive concessions in 2017, and Electro Araza prepared to launch a public tender for project execution in April 2025. EDF Perú holds the controlling stake in the special purpose vehicle developing the cascade system on the Araza River.
This article was curated and published as part of our South American energy market coverage.
