Mexico Sees Surge in Large-Scale Solar and Storage Projects Under New Investment Rules

Mexico is experiencing a rapid acceleration in large-scale solar and energy-storage proposals, following the government’s rollout of a new decree in mid-October that more tightly regulates private investment in the electricity sector. The updated framework requires private contracts to fully align with federal engineering, construction and oversight rules, offering developers clearer timelines, stronger accountability and greater certainty over long-term asset deployment. Since the decree took effect, authorities have received a rising number of photovoltaic (PV) project submissions, reflecting renewed investor confidence. A recent analysis by Ember suggests the new environment could help unlock up to 36,000 MW of solar capacity and 30 GWh of battery storage across the country in the coming years. Among the latest proposals is a 90 MW solar plant in Lagos de Moreno, Jalisco, which plans to integrate more than 218,000 modules and interconnect with the Federal Electricity Commission’s Lagos Galera substation. Another major development, the 118.8 MW Tulancingo Solar Park in Hidalgo, is being pursued by Desarrollos Fotovoltaicos de México del Centro, while GR Energía Renovables is advancing a 30 MW installation in San Miguel de Allende. Guanajuato is also emerging as a hub for new activity. Bluemex San Miguel has filed an environmental impact assessment for its 139 MW FV Santa Fe project, which features bifacial 680 W modules, battery storage, a substation and a transmission line spanning more than 335,000 meters. One of the most significant proposals to date is the 788.7 MW Alegría Solar project submitted by Sunstone Power 2 for Campeche. Paired with 177.69 MW/314.98 MWh of energy storage, the project includes over 1.15 million high-capacity PV modules, more than 100 transformer centers and 202 inverters. In northern Mexico, GCC Solar Samalayuca has requested approval for its Samalayuca I Solar Park, a 22.2 MW self-consumption project in Chihuahua expected to generate more than 59,000 GWh annually. Major foreign investors are also re-engaging with the country’s renewable market. Spanish utility Iberdrola recently announced plans to advance two solar facilities totaling 535 MW, including a 415 MW project in Saltillo and a 120 MW installation in Guanajuato—its first major moves after years of regulatory friction. President Claudia Sheinbaum’s administration has signaled a more pragmatic stance toward private and foreign investment, promising market participation “with certain rules” designed to maintain technical stability and modernize the power system. Together, these projects mark one of Mexico’s strongest waves of clean-energy development in recent years, signaling renewed momentum for solar growth under the country’s evolving regulatory landscape.