Winda Energy building 30MW/60MWh BESS in Finland with European suppliers

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Developer Winda Energy will put a 30MW/60MWh BESS in Finland into operation next year, built with technology supplied by European companies.

The 2-hour battery energy storage system (BESS) project will be built in Rautavaara. Construction is to start this autumn for a commercial operation date in 2026.

The BESS will be supplied by German-Czech company GAZ GmbH and the inverters will be supplied by Spain-based firm Ingeteam, a well-known name in the renewables industry that has worked on some of the largest BESS projects in the world. GAZ, meanwhile, specialises in nickel-cadmium (Ni-Cd) batteries but also provides lithium-ion solutions.

Czech renewables and flexibility services firm Second Foundation will provide route-to-market (RTM) and optimisation on the project. Finland is primarily an ancillary services market with wind making up a large part of its renewable energy mix.

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“This is a strategically significant step for us, which perfectly complements our development portfolio of over 30 wind and solar power projects,” said Winda Energy CEO Thomas Hooli.

Winda Energy’s majority shareholder is the private equity investor BHM Renewables, while its minority shareholders are a group of Finnish private investors.

The energy storage market in Finland has become hotbed of activity in the past few years, with numerous investors, developers and independent power producers (IPPs) launching projects thanks to a strong business case built around its various ancillary service markets.

Just in the past few months, a 38MW project was commissioned by investor Ardian and local utility Lappeenrannan Energia, and a 30MW one by developer Ilmatar and investor Nuveen Infrastructure, while numerous others have started construction. See all our news about Finland here.

9 June 2026
Stuttgart, Germany
Held alongside The Battery Show Europe, Energy Storage Summit provides a focused platform to understand the policies, revenue models and deployment conditions shaping Germany’s utility-scale storage boom. With contributions from TSOs, banks, developers and optimisers, the Summit explores regulation, merchant strategies, financing, grid tariffs and project delivery in a market forecast to integrate 24GW of storage by 2037.
2 December 2026
Italy
Battery Asset Management Summit Europe is the annual meeting for owners, operators, investors, and optimisation specialists working with operational BESS assets across the continent. The Summit focuses on how to maximise performance and revenue, manage degradation, integrate advanced optimisation software, navigate evolving market and regulatory frameworks, and plan for repowering or end-of-life strategies. With insights from Europe’s most active storage markets, it equips attendees with practical guidance to run resilient, profitable battery portfolios as the sector scales.

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