In Mexico, Brimex Energy S.A. de C.V. has announced that its renewable natural gas (RNG) facility in Lagos de Moreno is the first renewable thermal project in the country to be registered on the CleanCounts Registry (M-RETS), operated by CleanCounts, a US-based non-profit that runs North America's largest clean energy registry.
Based in Lagos de Moreno, Jalisco, Brimex Energy is a joint venture between Mexico’s Grupo Serrano and UK’s Farmergy of the United Kingdom.
The company designs, builds, and operates anaerobic digestion (AD) and biogas upgrading systems, and holds Mexico’s first federal permits for the production, storage, and commercialization of biomethane, aka renewable natural gas (RNG).
Approved for Renewable Thermal Certificates
Completed after an independent third-party engineering review by EcoEngineers, a clean energy consulting and auditing firm acquired by global assurance partner LRQA in March 2025, found no exceptions; the registration approves Brimex Energy to generate Renewable Thermal Certificates (RTCs), a class of Energy Attribute Certificate (EAC) issued for each dekatherm of verified renewable thermal energy the facility generates.
An EAC is an instrument that lets a buyer prove a clean energy claim. Each certificate carries a unique serial number and records the resource type, location, and production period of one unit of clean energy, creating an auditable chain of custody from generation through retirement.
EcoEngineers serves as the project’s independent reporting entity, delivering verified generation data into the registry.
A certificate is only as strong as the verification behind it. Brimex reaching this milestone reflects the rigor and commitment required to establish credible environmental attributes. Our role goes beyond registration, bringing independent technical review, data validation, and ongoing audit expertise to help ensure those attributes are supported by a strong, defensible record. We’re proud to support CleanCounts, Brimex, and the Mexican energy market in reaching this important milestone and in the work that continues from here, said Brad Pleima, P.E., President of EcoEngineers.
The announcement was made jointly at the Mexico Carbon Forum in Aguascalientes (September 2–3) and at the Renewable Energy Markets conference in Washington, DC (September 1–3), placing the news before Mexico’s environmental markets community and the North American clean energy buyers who transact on the registry at the same moment.
Food and beverage industry residues
The Brimex Lagos de Moreno facility converts organic waste from three industries that define the Altos de Jalisco region: dairy, swine production, and tequila.
Whey and milk byproducts, swine manure, wastewater sludge, and vinasse from tequila distillation feed three anaerobic digesters.
This includes material from food and beverage brands, including tequila producers Teremana and Campo Azul, as well as food brands Grupo Lala and Sigma Alimentos.
The resulting biogas powers generators that sell electricity to the commercial grid, and a portion is upgraded into RNG, which is used as vehicle fuel, and the remaining digestate is sold as a biofertilizer.
We built this plant to prove that the waste streams of Los Altos, from the dairy barn to the tequila distillery, could provide clean energy to the region. Brimex opened Mexico’s biomethane market with the country’s first federal permits, and this registration is the next step. Every dekatherm we produce now carries proof that buyers and auditors across North America recognize, said Guillermo Chaim Serrano, CEO of Brimex Energy.
Certified clean energy claim
Brimex Energy holds Mexico’s first federal permits for the production and, as of February 2026, the commercialization of RNG.
The project’s registry account is held through Cyan Energy S.A. de C.V., which serves as account holder and certificate marketer for the facility.
CleanCounts issued its two billionth certificate in 2025. Its software issues more than 40 percent of all renewable energy certificates in North America, and it was the first registry on the continent to track renewable thermal fuels.
Its architecture is designed to prevent double counting, the risk that two parties claim the same unit of clean energy.
For Mexico’s emerging RNG market, registry-grade tracking changes what producers can offer.
Certificates give corporate buyers and regulators verifiable documentation of Mexican renewable fuel, recorded on the same infrastructure that utilities and Fortune 500 companies across the United States and Canada already rely on for compliance and sustainability reporting.
Everyone can see what Brimex built in Lagos de Moreno: the digesters, the upgrading equipment, the fueling station. What no one sees is the infrastructure that makes those molecules count. Registries are the accounting layer of decarbonization. They make sure a dekatherm of Mexican biomethane is measured once, claimed once, and trusted by a buyer or auditor anywhere in North America. Extending that layer to Mexico is a proud moment for our team, and we expect Brimex to be the first of many as clean energy markets grow across Mexico, said Ben Gerber, President and CEO of CleanCounts.
