Zelestra announces full commercial operation of Peru’s largest solar plant, the 300 MWdc San Martín project

Jun 12, 2025

San Martín
  • Delivered in under 18 months, the 300 MWdc San Martín solar project is now fully operational in La Joya district of Arequipa, Perú.
  • The project will generate 830 GWh of clean energy per year, which will help Kallpa Generación to continue diversifying energy sources for its customers in the country through a long-term PPA.
  • At the peak of construction 900 jobs were supported by the project, which will prevent over 166,549 tons of CO2 emissions each year.

Zelestra, a global, customer-focused, multi-technology, renewable energy company has announced the full commercial operations at its 300 MWdc San Martín solar plant in Perú, the largest ever constructed in the country.

Delivered in under 18 months, led by Zelestra’s internal EPC (engineering, procurement and construction) division, San Martín supported 900 jobs at the peak of construction. The solar plant, which consists of 450,000 modules, will generate over 830 GWh of clean energy annually. This is equivalent to powering more than 440,000 homes and preventing over 166,549 tons of CO2 emissions each year.

Delivered on time and on budget, the project now supplies clean energy to its customer, Kallpa Generación, via a long-term PPA. The clean electricity produced is helping to enable the company to continue diversifying energy sources for its clients in Perú.

Leo Moreno, CEO of Zelestra, said: “The successful delivery of San Martín reinforces our commitment to a customer-first approach. By leveraging our global expertise in engineering, procurement, and construction, we can successfully co-build tailored solutions that bring projects to life on time and on budget. We are proud to see the most ambitious solar project in Perú now fully operational, and we look forward to a long-term partnership with Kallpa in delivering clean, reliable energy for years to come”.

Zelestra is a clean energy leader in Latin America, with more than 7 GW of BESS and solar projects in its pipeline in Perú, Chile and Colombia. Over 1.7 GW is already contracted with customers in the region, which supported the company being recently named among the top 10 sellers of clean energy to corporate customers globally by BloombergNEF (BNEF). The same report shows that Zelestra is ranked in second place for Europe, the Middle East and Asia. Zelestra continues to scale clean energy deployment across Latin America, building on the success of San Martín to accelerate the region’s transition.

About Zelestra

With a portfolio of over 29 GW of carbon-free projects in 13 countries (5.4 GW contracted with customers and in operations, construction, or pre-construction stage) Zelestra is a vertically integrated company specializing in the development, commercialization, construction and operation of large-scale renewable energy projects. The company is backed by EQT, one of the world’s largest funds, with more than €273 billion in total assets under management.