Taaleri Energia has ordered a 30 MW/36 MWh battery energy storage system from Merus Power Oyj. The battery energy storage is to be built in Lempäälä, Finland to support the operation of the electric grid. Merus Power is the project developer and is responsible for the overall delivery of the energy storage starting from obtaining the building permit.

The contract also includes Merus Power's cloud service which includes remote energy storage management and an electricity trading platform that optimizes battery usage and the customer's income from the electricity market. This investment is about EUR 20 million and includes the possibility of increasing the size of the energy storage system in the future. The main task of the battery energy storage system in Lempäälä is to support the balancing of production and consumption in the main grid by participating in the frequency reserve market of Finland's Transmission System Operator called Fingrid.

The energy storage will capacity-wise be Finland's largest energy storage operating in the frequency reserve market.