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UK Invests £69M in Innovative Hydropower Battery Technology

1/27/2026

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Summary

Story summary

A hydropower system near Plymouth, Devon, uses underground battery technology to generate electricity.
RheEnergise developed the project, which can generate 500 kilowatts and power about 400 homes annually on gentler slopes.
The UK government has invested over £69 million to support long-duration storage options, aiming to manage renewable fluctuations and reduce fossil fuel use.
Minister Patrick Vallance emphasized energy storage's role in transitioning to a clean power system.

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Story summary

A hydropower system near Plymouth, Devon, uses underground battery technology to generate electricity.
RheEnergise developed the project, which can generate 500 kilowatts and power about 400 homes annually on gentler slopes.
The UK government has invested over £69 million to support long-duration storage options, aiming to manage renewable fluctuations and reduce fossil fuel use.
Minister Patrick Vallance emphasized energy storage's role in transitioning to a clean power system.