As Puerto Rico works to rebuild its power grid after devastating hurricanes, Tesla‘s initiating one of its biggest energy storage projects in the Caribbean. The company signed a formal agreement in February 2024 with Genera PR to implement a 430-megawatt battery system across six locations on the island. This massive project seeks to stabilize Puerto Rico’s fragile electrical infrastructure and reduce frequent power outages that residents face.
The total investment reaches $767 million, but Puerto Rican citizens won’t pay a dime. Federal disaster recovery funds cover all costs as part of the island’s post-hurricane rebuilding efforts. The U.S. Department of Energy is also backing related storage projects with an $861 million loan guarantee, showing strong government support for the initiative. Genera PR operates most of Puerto Rico’s power generation capacity following a contract with PREPA in 2023, positioning the company as a key infrastructure partner in the island’s energy modernization efforts.
Tesla’s battery system will store 1,720 megawatt-hours of energy, which could power about 129,000 homes for four hours. The first major installation site is Cambalache Power Plant in Arecibo, where 68 Megapack units will be installed. Other facilities in Vega Baja, Palo Seco, Yabucoa, Aguirre, and Costa Sur will receive additional systems. This distributed approach prevents problems if one location fails, making the grid more reliable. The platform enables access to comprehensive information on companies and projects throughout the region to support infrastructure planning and investment decisions. This battery storage initiative aligns with Puerto Rico’s projected 55% residential solar penetration by 2030, creating an integrated renewable energy ecosystem.
Tesla’s 1,720 megawatt-hour battery system will power 129,000 homes for four hours while strengthening grid reliability across six Puerto Rican locations.
Puerto Rico experienced over 100 load-shed events in 2024 alone, forcing blackouts across the island. The new battery storage system will help prevent these outages by storing energy during low-demand periods and releasing it when demand peaks. It’ll also allow more renewable energy to feed into the grid, reducing reliance on expensive fossil fuels. Luma Energy has faced ongoing scrutiny for slow infrastructure modernization efforts that have contributed to the island’s power challenges.
Construction already began at Cambalache with site preparation and demolition activities underway. Tesla expects to install Megapacks there by spring 2026, with that facility becoming operational by late 2026. The entire six-site system should be fully operational by 2027.
Tesla Director Brad Harbidge and Genera PR CEO Winnie Irizarry led the February signing ceremony alongside Puerto Rico Governor Jenniffer González Colón. This project represents a critical step toward modernizing Puerto Rico’s aging power infrastructure.