Biggest battery order for Rolls-Royce: large-scale energy storage system in Lithuania
Posted on September 16, 2025
- Order comprises mtu EnergyPacks with a capacity of 582 MWh and an output of 291 MW
- Reinforces Rolls-Royce’s position as a global leader in integrated energy solutions for a decarbonised, resilient and secure future
Lithuanian energy supplier Ignitis Group, which specializes in renewable energy, has selected Rolls-Royce to supply large-scale battery storage systems from the mtu EnergyPack brand. The order comprises of systems with a total storage capacity of 582 megawatt hours and a total output of 291 megawatts, which will contribute to the power grid in Lithuania from 2027 onwards. This is the largest battery order ever received by Rolls-Royce's Power Systems division. The company has now delivered mtu battery storage solutions for over 200 projects worldwide.
The battery storage systems will be installed at three locations, including the Kelmė and Mažeikiai wind farms and the Kruonis pumped storage power plant. The battery systems store surplus electricity from renewable energy sources and feed it back into the power grid when demand increases, balancing the system and ensuring a reliable power supply.
“An important component of the Rolls-Royce solution is the mtu EnergetIQ Manager, which was developed in-house and is tailored to our battery systems. This intelligent control system not only manages the three battery parks, but also the connected wind farms and controls both power supply and storage,” explained Andreas Görtz, President of Sustainable and Mobile Power Solutions at Rolls-Royce Power Systems. “Battery storage systems are a central component of our strategy. We are proud that our technology is helping to ensure a secure power supply in Lithuania.”
“Power generation from renewables is growing in Lithuania, which makes battery energy storage systems an important guarantee of reliability. They make the network more flexible, enable efficient use of green energy and help maintain stability even through heavy fluctuations. Battery energy storage systems are a key component of green transition as they will help integrate more green capacities, balance the fluctuations in power prices as well as reduce them,” said Darius Maikštėnas, CEO of Ignitis Group.
With this landmark project, Rolls-Royce is further cementing its position as a global leader in integrated energy solutions. Backed by an unmatched portfolio – from today’s proven technologies such as battery energy storage, diesel and gas systems to future-defining innovations including small and advanced modular reactors – the company is at the forefront of tackling the world’s most urgent energy challenges: decarbonisation, resilience, and energy security. By enabling the reliable integration of renewable energy into power grids, Rolls-Royce is strengthening its role in one of the fastest-growing global markets and delivering sustainable solutions that power economies and communities worldwide.
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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 48 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 £17.8 billion in 2024, and underlying operating profit was £2.46 billion.
- Rolls-Royce Holdings plc is a publicly traded company (LSE: RR., ADR: RYCEY, LEI: 213800EC7997ZBLZJH69)5.
- 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.
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