Project status
- Project Design
- Community Consultation
- Planning Application Submission
- Planning Consent Granted
- Construction
- Operational
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Where
Tiverton, Mid Devon
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What
Battery energy storage
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Network Connection Capacity
400 MW
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Equivalent household power use
800,000 homes for 2 hours when fully charged
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Annual CO2 emissions saved
110,000 tonnes
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Targeted Operational Date
2032
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Project Development Size
6 hectares of infrastructure, 14 hectares of landscaping
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Project Lifespan
40 years
The Junction 27 Energy Hub storage is located adjacent to Junction 27 of the M5 motorway in Devon, south west England. The project will connect directly to the High Voltage transmission line carrying electricity from east to west across the south of England.
The project was consented by Mid Devon District Council in 2024.
The South West of England generates more solar energy than any other region of the UK. It is also the furthest point on the transmission network away from off-shore wind farms in the north of England and Scotland. The Junction 27 Energy Hub project will provide much needed storage capacity to help balance electricity supply and demand across Devon and Cornwall.

Biodiversity benefits
More than half of the project site for the Junction 27 energy hub project has been set aside for initiatives that will enhance nature and wildlife. Proposed enhancements include:
- The creation of wetland habitats and/or water meadows adjacent to a nearby river
- Planting of new hedgerows and reinforcement of existing ones.
- The creation of bird and animal habitats across the site.
- Grazing meadow in the fields between the batteries and the river.
These initiatives will support significant increases in biodiversity on the site.

