Firm Estimated Low-Cost Hydrogen Production
Engineering analysis suggests using depleted oil reservoirs for hydrogen production could cost $0.56 per kilogram.
Updated on Sept. 22, 2026 in Energy
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Do you believe repurposing depleted oil fields for hydrogen production is a viable clean energy strategy?
Engineering firm Wood has estimated that producing hydrogen from depleted oil reservoirs costs $0.56 per kilogram. The assessment highlights a production method that maintains low carbon emissions during the process.
Why it matters
This technology aims to extend the economic viability of aging oil infrastructure by repurposing it for sustainable energy production. Validating these production costs is a critical step in assessing the commercial potential of microbial hydrogen generation.
The production process involves injecting microbes, nutrients, and water into depleted oil fields. During 2025 field tests in the San Joaquin Basin, this microbial method yielded an output consisting of 40% hydrogen, alongside residual methane and carbon dioxide.
The players
Wood
This global engineering and consulting firm provides technical assessments for the energy and infrastructure sectors.
Eclipse Energy
This energy company focuses on developing innovative technologies for hydrogen production within existing oil and gas assets.
The details
The RenovoStrata technology breaks down residual hydrocarbons within old reservoirs into hydrogen gas. Eclipse Energy intends to refine this process by using specialized membranes to capture hydrogen while managing the remaining methane and carbon dioxide byproducts.
Timeline
Eclipse Energy deployed the microbial technology in California throughout 2025.
Wood issued its cost and emissions assessment in 2026.
The Big Picture
This development represents a departure from traditional electrolysis-based hydrogen generation by utilizing existing infrastructure for energy extraction. By integrating RenovoStrata technology, the project provides a framework for repurposing depleted fields, potentially shifting how the energy sector views late-life oil assets.
If successfully scaled, this method could lower the price of hydrogen, potentially impacting future fuel costs and energy accessibility. The technology may also preserve local energy industry jobs by extending the functional lifespan of regional oil sites.
The takeaway
Repurposing depleted oil reservoirs into hydrogen sources offers a unique path toward sustainable energy production. Consumers should monitor this technology for its long-term potential to lower hydrogen market prices through infrastructure reuse.
Further reading
Learn more about the state's transition to new power sources in our California Energy section.
Live Poll
Do you believe repurposing depleted oil fields for hydrogen production is a viable clean energy strategy?
