Pertunmaa battery energy storage system (BESS) progressing towards commissioning

Solarigo is delivering a utility-scale 6 MW / 13.5 MWh battery energy storage system (BESS) in Pertunmaa, Finland. The project is an important step in strengthening grid flexibility and enabling more efficient integration of renewable energy into the local electricity network.

The project has now reached a key milestone. The substation and battery containers have been successfully installed, and the main installation works have been completed. The project is now moving into the commissioning phase, bringing the system closer to operational readiness.

Solarigo acts as the project developer, while Solarigo Systems is responsible for the engineering, construction, and commissioning of the BESS. Solarigo Systems has led the project from early-stage development and design through to on-site execution.

Once operational, the BESS will provide fast-response capacity for reserve markets, support peak load management, and optimise the utilisation of renewable energy. Alongside the storage system, an 8.8 MWp solar park is planned, forming an efficient hybrid energy solution that combines clean generation with intelligent storage.

Solarigo has strong experience in delivering hybrid energy projects in Finland, including the Honkisaarenneva project in Kuortane and the Callio project in Pyhäjärvi. The Pertunmaa project further demonstrates Solarigo’s capability to design and deliver profitable energy storage and hybrid solutions in a cost-efficient manner.

Solarigo provides full balance-of-plant (BoP) works and turnkey battery energy storage system deliveries — from development and engineering to construction and commissioning.