Mexico Extends Deadlines for Legacy Power Project Migration
Mexican energy regulators have extended key deadlines and clarified technical requirements for migrating legacy self-supply and cogeneration power projects to the current wholesale market framework.
On September 8, 2026, Mexico's federal government published amendments to its guidelines for migrating legacy self-supply and cogeneration electricity projects into the current legal framework. The new rules, which took effect the following day, respond to industry feedback by extending critical deadlines for the complex transition. For instance, the window for project owners to register their interest in migrating has been extended by three months to December 18, 2026, with corresponding extensions for subsequent stages.
The changes provide operators with more time to manage the necessary corporate and contractual arrangements. The amendments also offer important technical clarifications on modernization plans, metering equipment standards, rules for shared substations, and pathways for early operational testing to enter the Wholesale Electricity Market sooner. Counsel for affected project owners should note an urgent action item: stakeholders who have already applied must, within 10 business days of the effective date, formally confirm their intent to adhere to the original, faster timeline. Otherwise, their applications will automatically be moved to the new, extended schedule.