Skip to main content

Detail – Energy Country Profile

Hybrid battery energy storage system started operation in Poland

As part of a smart grid demonstration project, a hybrid battery energy storage system (BESS) started its full-scale operation on 25 September at the wind park in Bystra, Poland. The system is designed to support the integration of renewable energy in Poland through secure power grid operation and lower power transmission equipment investment costs.

It is expected that the hybrid storage system will prove the effectiveness of the functionality for reducing short-term fluctuations in wind power generation and for securing reserve power for adjusting the demand-supply balance.

The hybrid BESS includes 1 MW/0.47 MWh of high-output lithium-ion batteries and 5 MW/26.9 MWh of high-capacity lead-acid storage batteries. The BESS distribution control system enables the hybrid control of these two types of storage batteries.

The storage system was developed by Hitachi in partnership with New Energy and Industrial Technology Development Organization, Showa Denko Materials Co and Sumitomo Mitsui Banking Corporation supported by the Ministry of Climate. Local partners are Polskie Sieci Elektroenergetyczne SA, Energa Operator SA and Energa OZE SA.