The TVO-Olkiluoto Battery Energy Storage System is a 90,000kW energy storage project located in Olkiluoto, Satakunta, Finland.

The project was announced in 2021 and will be commissioned in 2022.


The TVO-Olkiluoto Battery Energy Storage System is being developed by Hitachi ABB Power Grids. The project is owned by Teollisuuden Voima (100%).

The key application of the project is grid supportive services.

Contractors involved

Teollisuuden Voima is the owner. Hitachi ABB Power Grids is the developer. Hitachi ABB Power Grids is the technology provider for the project.

Hitachi ABB Power Grids is the system integrator.

Additional information

The 90 MW system will support the entire energy network, in a potential production disturbance in the Olkiluoto 3 plant unit, thus minimizing the effect of power fluctuations on the grid. The turnkey solution acts as a fast-start backup power source.

About Hitachi ABB Power Grids

Hitachi ABB Power Grids Ltd (Hitachi ABB), formerly ABB Management Holding AG, a subsidiary of Hitachi Ltd, develops advanced automation systems, power and digital technologies. The company’s product range includes cooling, asset and work management systems; capacitors and filters; communication networks; disconnectors; generator circuit-breakers (GCB); instrument transformers; scada and control systems; semiconductors; substations; transformers; and cable accessories. It provides installation and commissioning, training and development, consulting, maintenance, upgradation and replacement services. The company serves customers across energy, mobility, information technology, industry and infrastructure sectors. Hitachi ABB is headquartered in Zurich, Switzerland.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.