Wärtsilä Energy Storage delivers fully integrated, grid-ready battery energy storage systems—designed, engineered, and supported as one unified solution. Backed by 20+ GWh across 130+ global sites and a combined 575 years of operation across projects, our expertise ensures every element works in concert to drive performance, reliability, and revenue from day one.
Combining a sophisticated, comprehensive software platform with deep grid compliance and delivery expertise, Wärtsilä provides a fully integrated solution that performs reliably in complex, fast-evolving energy markets.
Control software that leaves no gaps
As grids become more complex and renewable-heavy, evolving codes and market rules make advanced energy management and optimisation solutions critical, ensuring compliance while enabling participation in revenue-generating markets. Wärtsilä's GEMS software capabilities are proven through successful integrations across 20+ markets worldwide.
On-time delivery and grid code compliance
From modelling and grid operator coordination through to operation, Wärtsilä's experts are with you every step of the way. This unmatched visibility and experience help minimise delays and avoid compliance-related penalties, contributing to our track record of delivering 92% of projects on time or ahead of schedule.
A partner you can stand beside—both commercially and reputationally
Backed by over 192 years of Finnish values, reliable engineering, and a robust cybersecurity posture designed to protect critical infrastructure.
Madero & Ignacio, USA
Enabled Eolian to be a first-mover in the fast frequency response markets in ERCOT and delivered the largest merchant BESS in Texas.
Customer: Eolian
Site Size: 200 MW / 500 MWh
Site location: Texas, USA
Delivery: 2022
Torrens Island, AU
Enabled AGL to participate in the lucrative 1s FCAS market in AEMO. Over H2 2024, Torrens Island supplied 17% of the Raise 1-second market in the NEM, the highest of any generating asset.
Customer: AGL Energy
Site Sizes: 250 MW / 250 MWh
Site location: South Australia, AU
Delivery: 2023
Blackhillock, AU
First in the world to provide stability services to the NESO in Scotland, including short-circuit level and true synthetic inertia, and largest operational battery in Europe.
Customer: Zenobē
Site Size: 500 MW / 1 GW
Site location: Scotland, UK
Delivery: 2025
