Wärtsilä Energy Storage is driving the transition to a 100% renewable energy future. We combine time-tested technology with deep grid expertise, helping customers and the energy sector accelerate global decarbonisation.
Our utility-scale energy storage seamlessly integrates with critical energy systems, driving revenue with optimised assets and delivering proven reliability, flexibility, and safety. We have over 18 GWh of energy storage deployed or contracted across 130+ sites worldwide.
Backed by Wärtsilä's reputation as a bankable and reliable partner, our comprehensive system-level approach to battery energy storage technologies stands apart. We leverage our advanced hardware, intelligent optimisation, and operational expertise to maximise the longevity of your assets and the value of your overall investment.
GWh of energy storage capacity globally
projects
remote operational support
Software
Maximise revenue and reduce risk with intelligent control, real-time data, & automated optimisation across the system.
Hardware
Deliver more capacity with less footprint through compact designs, streamlined logistics, & industry-leading safety.
Lifecycle Services
Protect long-term value with full-system support designed to optimise performance, ensure reliability, & accelerate ROI.
Wärtsilä sets new fire safety benchmark with Quantum3 energy storage system
Wärtsilä to deliver Australia’s largest DC-coupled hybrid battery system
Wärtsilä debuts GEMS Pulse, a new software solution to enhance revenue for BESS customers through cell-to-fleet data analytics
TIME names Wärtsilä Energy Storage among the Best Inventions of 2025
