Hitachi Energy has entered into an agreement with Nordic Electro Power (NEPower) to deliver advanced power conversion technology for Finland’s largest battery storage system, located in Haapajärvi.
The 125 MW / 250 MWh battery storage facility, developed by Switzerland-based energy company Alpiq, will support Fingrid’s reserve market and help balance variations in energy generation and consumption. By deploying Hitachi Energy’s technology, the project aims to enhance system efficiency and reinforce the stability of Finland’s national power grid.
As part of the agreement, Hitachi Energy will supply NEPower with critical components such as a Power Conversion System (PCS), transformers, Ring Main Units (RMUs), a Power Plant Controller (PPC), and a SCADA-based energy management system. The scope also includes installation supervision, commissioning, maintenance, and integration support. These solutions will enable real-time monitoring and control, data-driven decision-making, rapid fault detection, and optimized performance, ensuring reliability and long-term value for Alpiq’s battery storage operations.
The solution is also modular, scalable, and designed for demanding Nordic conditions. It offers fast load management, high cybersecurity, and grid-forming functionality, supporting Finland’s carbon neutrality targets and ensuring energy security.
“We are pleased to partner with NEPower on this landmark clean energy investment that strengthens Finland’s energy system. Energy storage, power electronics, automation, and electrification are essential for maintaining grid stability and flexibility as the energy transition accelerates”, says Matti Vaattovaara, Managing Director, Hitachi Energy Finland.
Global energy storage capacity is expected to grow sixfold by 2030 (IEA1), and commitments made at COP292 underscore the critical role of storage and grid infrastructure in building a sustainable energy system. High-performance power conversion solutions are key to enabling large-scale projects like Haapajärvi.
Hitachi Energy has delivered more than 10 GW of energy storage and renewable integration solutions worldwide, backed by over 30 years of experience and 350+ BESS references across utility, commercial, and industrial applications.
Construction of the Haapajärvi facility is underway, with commissioning planned for mid-2027.
