U.K.’s first deep geothermal energy and zero-carbon lithium plant at United Downs facility
Project
Octopus Energy has committed to purchasing at least 3 megawatts of Geothermal Engineering Limited's (GEL) constant geothermal output from its United Downs facility, enough to provide clean energy for approximately 10,000 U.K. homes.
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Deal Analysis
Octopus Energy's commitment to purchase 3 MW of constant geothermal output from Geothermal Engineering Limited (GEL) via a Power Purchase Agreement (PPA) represents a significant development for the United Kingdom's emerging geothermal sector. This announced PPA, originating from GEL's United Downs facility, is projected to supply clean energy for approximately 10,000 U.K. homes, underscoring a tangible move towards diversifying the nation's renewable energy mix with a baseload power source.
This deal is notable for several reasons. It marks one of the earlier commercial PPAs for geothermal energy in the United Kingdom, a market where this technology is still in its developmental stages. The involvement of Octopus Energy, a prominent energy supplier with a focus on renewables, as the offtaker provides crucial long-term revenue certainty for GEL, an independent power producer pioneering geothermal development. While the financial value remains undisclosed, the 3 MW capacity is a foundational step for the United Downs project and signals growing confidence in geothermal's potential to contribute to the UK's energy transition landscape.
- PPA for 3 MW of constant geothermal output.
- Involves Octopus Energy (offtaker) and Geothermal Engineering Limited (IPP).
- Located in the United Kingdom, a developing market for geothermal.
- Projected to provide clean energy for approximately 10,000 U.K. homes.
Source Intelligence
KEY DETAILS
The facility also commenced commercial-scale production of zero-carbon lithium carbonate. Quote: "In a parallel breakthrough, GEL has also commenced the commercial-scale production of zero-carbon lithium carbonate, the key raw material for rechargeable batteries, at the United Do"
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Capacity
purchasing at least 3 megawatts of GEL’s constant geothermal output
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Location
U.K.’s first deep geothermal energy and zero-carbon lithium plant at United Downs facility ... United Kingdom’s first-ever geothermal electricity from its United Downs facility
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PPA Details
Octopus Energy has committed to purchasing at least 3 megawatts of GEL’s constant geothermal output
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Financials
Kerogen-CX $20m investment powers U.K.’s first deep geothermal energy and zero-carbon lithium plant at United Downs facility
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Announcement
FEBRUARY 27, 2026 ... Kerogen-CX Capital-backed Geothermal Engineering Limited (GEL) has announced the delivery ... Octopus Energy has committed to purchasing
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COD
FEBRUARY 27, 2026 ... Geothermal Engineering Limited (GEL) has announced the delivery of the United Kingdom’s first-ever geothermal electricity from its United Downs facility
PARTIES MENTIONED IN SOURCE
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Kerogen-CX
investor
"Kerogen-CX $20m investment powers U.K.’s first deep geothermal energy and zero-carbon lithium plant at United Downs facility | News | Institutional Real Estate, Inc. ... Kerogen-CX Capital-backed Geothermal Engineering Limited (GEL)"
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Geothermal Engineering Limited (GEL)
developer
"Kerogen-CX Capital-backed Geothermal Engineering Limited (GEL) has announced the delivery of the United Kingdom’s first-ever geothermal electricity from its United Downs facility"
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Octopus Energy
buyer
"Octopus Energy has committed to purchasing at least 3 megawatts of GEL’s constant geothermal output"
high quality
Enriched Feb 28, 2026
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Global Infrastructure Sherpa