Falkirk to be site of UK’s first large-scale battery energy storage

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April 9, 2026
3 min read

Falkirk to be site of UK’s first large-scale battery energy storage

Rolls-Royce has begun the construction of what will be the UK’s first large-scale battery energy storage facility. The facility, in Falkirk in Scotland will be the company’s first project of its type in the country, it said.

The Falkirk facility is going to be delivered under an energy, procurement, and construction contract for Voltaria Helios Energy Storage. It will reportedly have a capacity of 86 MWh with an output of 43 MW. According to Rolls-Royce, that is equivalent to the energy demands of approximately ten thousand homes.

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“Rolls-Royce were selected because we were impressed by their commercial and technical offering, as well as their technical advice and engagement in the run-up to the decision, and their 15-year full-wrap long-term service agreement,” Nigel Jefferson, CEO of Voltaria said. “Rolls-Royce has also leveraged the Scottish supply chain, which is great to see.”

The system hopes to connect to the grid in 2026 and become operational in 2027. Rolls-Royce will be responsible for its maintenance for 15 years.

The project will use Rolls-Royce’s mtu EnergyPack system which is capable of storing energy during periods of high renewable output, returning it to the grid during periods of peak demand. The company said that it would also reduce a need to curtail wind during periods of oversupply.

“As a European turnkey integrator, we foster the energy transition by delivering storage solutions, from system design and EPC delivery to intelligent control and lifecycle support,” Andreas Görtz, President of the Mobile & Sustainable business unit at Rolls-Royce Power Systems, said.

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