The Mexican government has announced the approval of 20 private renewable generation projects with a combined installed capacity of 3,320 MW and 1,488 MW of energy storage, following the call for proposals launched last October. A month after India introduced an energy storage mandate for renewable energy plants and China scrapped its own, Mexico has stepped forward with an ambitious 30% capacity requirement, alongside plans to add a further 574 MW of batteries by 2028. This move, announced by Jorge Islas, Undersecretary for Planning and Energy Transition, aligns Mexico with global efforts. Edilso Reguera, a researcher at the Center for Research in Applied Science and Advanced Technology (Cicata) of Mexico's public National Polytechnic Institute, displays an X-ray diffractometer used to study the structure of materials for electric batteries designed to store and recharge energy. CRE regulation integrates batteries, intermittency management and grid operation backup through energy storage. Electric energy storage has become a crucial component in the transition to more sustainable, reliable and efficient energy systems.