Rolls-Royce and Voltaria to build a 43 MW large-scale battery storage facility in Scotland
Posted on March 16, 2026
- mtu EnergyPack to support Scottish power grid and Clean Power 30 Action Plan from 2027
- The battery storage facility will have a capacity of 86 MWh and an output of 43 MW
- Rolls-Royce provides turnkey solution and long-term service
- More than 200 mtu battery storage systems in use worldwide
Rolls-Royce has begun construction on an Engineering, Procurement, and Construction EPC contract from leading battery energy storage platform Voltaria Helios Energy Storage to supply a large-scale battery energy storage facility in Falkirk, Scotland. This is the first large battery energy storage project by Rolls-Royce in the UK and will help stabilize the grid and support the UK’s Clean Power 30 Action Plan.
The mtu EnergyPack, with a capacity of 86 MWh and an output of 43 MW – which is equivalent to the demand of around ten thousand homes or a large industrial site – will connect to the grid in 2026 and come online in 2027. It will store electrical energy during periods of high renewable energy production and feed it back into the grid during peak demand. The battery storage will facilitate additional renewable generation by avoiding uneconomical turn-down of wind generation. Rolls-Royce will maintain the system for 15 years.
The UK is considered Europe’s most mature market for battery energy storage systems, and it continues to grow rapidly. With its Clean Power 30 Action Plan, the UK has set a target of providing 27 gigawatts (GW) of battery storage capacity by 2030, primarily for grid-connected applications to support carbon-free electricity supply. This capacity will help balance supply and demand, maximize electricity generation from renewable sources by reducing the requirement for expensive curtailment of renewable generation, and reduce dependence on fossil fuels.
Nigel Jefferson, CEO at Voltaria, said: “The Bankside project in Falkirk is the first of many battery energy storage sites Voltaria intends to deliver and operate. 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. Rolls-Royce and the CATL battery solution are market leaders, and both stand for quality, so our expectations for the delivery and operation of this project are high. Rolls-Royce has also leveraged the Scottish supply chain, which is great to see.”
Andreas Görtz, President Business Unit Mobile & Sustainable at Rolls-Royce Power Systems, said: “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. Our collaboration with Voltaria draws on all the experience we have gained in over 200 battery projects worldwide.”
Voltaria Helios Energy Storage is a joint venture between Helios Energy Investments, a group of private equity funds focused on energy transition investments, and Voltaria (which is owned by Renewables Infrastructure Capital).
About Rolls-Royce Holdings plc
- Rolls-Royce is a force for progress; powering, protecting and connecting people everywhere. Our products and service packages help our customers meet the growing need for power across multiple industries; enable governments to equip their armed forces with the power required to protect their citizens; and connect people, societies, cultures and economies together.
- Rolls-Royce has a local presence in 47 countries and customers in over a hundred more, including airlines and aircraft leasing companies, armed forces and navies, and marine and industrial customers.
- Through our multi-year transformation programme, we are building a high-performing, competitive, resilient and growing Rolls-Royce. We are building the financial capacity and agility to allow us to successfully develop and deliver the products that will support our customers through the energy transition.
- Annual underlying revenue was £20.1 billion in 2025, and underlying operating profit was £3.46 billion.
- Rolls-Royce Holdings plc is a publicly traded company (LSE: RR., ADR: RYCEY, LEI: 213800EC7997ZBLZJH69).
- Rolls-Royce Power Systems is headquartered in Friedrichshafen in southern Germany and employs more than 10,350 people. The product portfolio includes mtu-brand high-speed engines and propulsion systems for ships, heavy land, rail and defence vehicles and for the oil and gas industry. The portfolio also includes diesel and gas systems and battery containers for mission critical, standby and continuous power, combined generation of heat and power, and microgrids. With its climate friendly technologies, Rolls-Royce Power Systems is helping to drive the energy transition.