To combat recurring power outages on isolated grids, CFE is launching Proyecto Oasis BCS in Mulege, Baja California Sur, marking Mexico’s first operational deployment of green hydrogen for utility-scale electricity generation. The hybrid system combines a 72MW photovoltaic plant, 20MW of battery storage, 20MW of electrolyzers, and 6MW of hydrogen fuel cells to supply roughly 40,000 households and displace costly diesel imports. By utilizing surplus daytime solar energy to produce and store hydrogen for nighttime fuel cell generation, the project addresses the critical balancing act required for the state’s completely isolated electrical grid, though it faces steep hurdles regarding high technical costs and the corrosive nature of hydrogen.
Recurring power outages across several Mexican states during the 2026 summer peak season have accelerated the federal government’s search for generation alternatives beyond conventional thermal plants. The answer CFE is advancing for Mulegé, Baja California Sur, may be the most technically ambitious energy initiative the utility has ever proposed for an isolated grid: Proyecto Oasis BCS, a hybrid system combining photovoltaic generation, battery storage, and green hydrogen fuel cells that would mark CFE’s first operational deployment of green hydrogen for electricity generation.
According to Expansión, Oasis BCS combines a 72MW photovoltaic plant, a 20MW BESS, 20MW of electrolyzers, and 6MW of hydrogen fuel cells. The goal is to substitute part of the diesel and fuel oil currently used to attend demand peaks in the municipality, supply electricity to approximately 40,000 households, avoid the emission of approximately 94,389t of carbon dioxide per year, and reduce the consumption of approximately 23,000m3 of fossil fuels annually.
The Island Grid Problem That Prompted the Solution
The specific geography of Mulegé is the operational rationale for a technology as complex as green hydrogen. Due to its geographical characteristics, Baja California Sur is the only state in the country that is not connected to the National Electric System. The state has two electrical systems, the Baja California Sur Electrical System covering Loreto to Los Cabos, and the Mulege Electrical System in the northern part of the state.
In an isolated grid with no interconnection to the National Interconnected System, all electricity consumed locally must be generated locally. Battery storage can bridge short gaps between solar generation hours and 24-hour demand, but for longer periods without sunlight, a different firm energy source is required. Green hydrogen provides that source: surplus solar electricity runs the electrolyzers during daylight hours, the hydrogen is stored, and fuel cells convert it back to electricity at night or during periods of peak demand. The system is theoretically self-sufficient on solar energy alone, with no fuel import dependence.
A Technology That Has Stalled Before
A clear regulatory framework for green hydrogen production, commercialization, and export was lacking until recently. The absence of guidelines had previously halted CFE’s green hydrogen pilot at Puerto Peñasco, Sonora, which was planned for 2023. That earlier stall is what makes the Oasis BCS announcement both more credible and more contingent than the headline suggests.
CFE has considered the use of green hydrogen in combined-cycle plants for years. The company identified three main applications: storage with hydrogen fuel cells, as a chemical for refining and production of green ammonia, and combining it with natural gas to produce electricity. However, the levelized costs remain high, and technical challenges such as low energy efficiency, high costs, and hydrogen’s corrosive nature pose significant obstacles, according to UNAM researcher Luca Ferrari.
Israel Hurtado, President, Asociación Mexicana de Hidrógeno y Transformación Energética, considers green hydrogen a viable alternative for isolated systems like that of Baja California Sur, but has warned that the project’s performance during operation will need to be carefully evaluated before the model can be replicated in other regions with similar characteristics, such as the Yucatan Peninsula, or adapted to projects leveraging wind rather than solar resources.
Puerto Peñasco as the Technology Incubator
The Oasis BCS project does not emerge in isolation. The Rafael Galván Maldonado photovoltaic plant in Puerto Peñasco, Sonora, where Sequences I and II are already contributing 400MW of generation and 72MW of battery storage to the national grid, was originally designed to serve as CFE’s green hydrogen pilot location. CFE’s green hydrogen pilot project at Puerto Peñasco would allow CFE to draw the roadmap for incorporating hydrogen into the national energy system, using electrolyzers linked to the photovoltaic capacity to produce hydrogen for fuel cell generation.
The integration of electrolyzers and fuel cells at Mulegé builds on the technical learning from Puerto Peñasco, but deploys it in a fundamentally more constrained and higher-stakes environment. In an isolated system with no backup interconnection, a technical failure in the hydrogen subsystem has no grid fallback. The operational reliability demands at Mulege exceed those of a pilot project grafted onto a large, grid-connected facility.
