Rolls-Royce wins 291-MW battery contract from Lithuania’s Ignitis energy supplier

• Rolls-Royce Power Systems will deliver 291-MW/582-MWh of battery storage to Ignitis Group, its largest BESS order yet, supporting Baltic grid reliability and renewables.

Rolls-Royce has confirmed its largest battery-energy storage order to date: 291 MW/582 MWh for Lithuania’s Ignitis Group. The multi-site portfolio will help the Baltic state firm evening peaks, absorb midday wind and solar, and respond within seconds to frequency deviations—capabilities that become essential as variable generation deepens.

The systems will be supplied by Rolls-Royce’s Power Systems division and integrated with grid-scale controls for fast frequency response, black-start support and voltage regulation. Engineering will emphasise grid-forming inverter functionality, fire-safety systems with compartmentalised enclosures, and SCADA tuned for the transmission operator’s dispatch signals. Siting across several substations spreads risk, trims transmission losses and allows staged commissioning so benefits arrive sooner rather than waiting for a single mega-project to finish.

Lithuania’s renewables buildout has accelerated, but like much of Europe the challenge has shifted from megawatts to flexibility. Batteries provide a bridge: they soak up surplus when conditions are favourable and redeploy energy when wind slumps or solar fades—exactly the hours when prices spike. For Ignitis, the fleet will add a controllable tool to smooth net-load ramps, reduce curtailment and strengthen resilience during contingencies.

Commercially, a portfolio approach unlocks financing and O&M efficiencies—standardised platforms, common spare parts, and unified monitoring cut lifetime costs. It also keeps options open for future market designs; if capacity or flexibility products evolve, a dispersed fleet can be re-tuned to capture new revenue streams without major hardware changes.

With contracts inked, attention turns to procurement of long-lead transformers and switchgear, civil works at substation sites, and a staged testing regime that exercises grid-support features before full market participation. When complete, the 291-MW/582-MWh fleet will mark a step-change in Lithuania’s ability to integrate more renewables while maintaining reliability—an industrial-scale battery play designed for a fast-changing grid.