Czechia’s largest battery system goes online

Nine transformer skids, 18 power conversion systems and 144 battery cabinets now stand near Lipnice nad Sázavou in Czechia’s Vysočina Region, about 100 kilometers southeast of Prague. Together, they form a 57 MW/120 MWh battery energy storage system — BESS, a large battery installation that stores electricity and releases it when needed — now the country’s largest operational system.

Suas Group, a Czech industrial holding, and Slovak investment firm EIF put the facility online at a reported cost of 400 million CZK (USD 19.1 million). Its job is not limited to holding power: the system can help maintain grid stability, provide ancillary services — support services for the electricity network — to transmission operator ČEPS, and trade electricity in day-ahead and intraday markets.

The companies say the installation could supply electricity to a city the size of nearby Sokolov for ten hours. Their commercial plan is more specific: BESS Lipnice will be used primarily to buy and sell electricity across day-ahead and intraday markets, rather than relying only on payments for technical flexibility. Suas Group says smart algorithmic management and revenues from multiple markets could allow the project to pay for itself within five to eight years.

So what changes in practice? Czechia now has a larger grid-connected battery able to move electricity between moments of surplus and demand, while also offering network support and a route to participate in power markets. That gives the project several possible revenue streams, but the payback period is the company’s estimate, not a reported result from an operating track record.

The Lipnice system follows the 37.95 MW/41.7 MWh battery at Modlany Energy Park in northern Czechia, commissioned earlier this month. Aurora Energy Research forecast in November 2025 that Czechia’s total battery storage capacity could reach 6 GWh by the end of the decade; in March 2025, the European Union approved an aid package for 1.5 GWh of storage capacity in the country.