Merus Power’s largest battery energy storage system enters the electricity market use
The largest battery energy storage system operating on Finnish electricity markets, delivered by Merus Power, has been completed and is now in market use. The energy storage facility, designed for Finnish cold and snowy conditions, is located in Lempäälä, Finland. It is part of a fund investment managed by Taaleri Energia. The purpose of the energy storage is to support grid stability by participating in Fingrid’s balancing markets, and wholesale electricity market. The completion of this project is a significant milestone for the company, as it represents the largest energy storage system ever manufactured by Merus Power.
Acting as the EPC contractor, Merus Power delivered the turnkey solution. The EPC project encompassed development, procurement, and construction. Additionally, the company conducted all project testing and ensured the energy storage system’s readiness for market operations. Merus Power’s expertise spans the entire value chain—from development and manufacturing to technical design and energy trading.
The needs of renewable energy are transforming power grids
The growing share of renewable energy makes balancing electricity production and consumption increasingly challenging. The decreasing role of traditional condensing power plants has reduced the grid’s ability to handle sudden changes, thereby increasing the need for fast and flexible energy reserves. The energy storage system at Lempäälä can respond to grid balancing needs within milliseconds, far exceeding the reserve market’s 2-second response time requirement.
A modern energy storage system is a technically complex entity. The power electronics, control systems, and protection systems of the Lempäälä energy storage system were all designed, manufactured, and programmed by Merus Power. This demonstrates the company’s unique technological expertise and ability to deliver solutions that perform efficiently in dynamic electricity markets, even in extreme cold weather conditions.
Read more about Merus® ESS battery energy storage solutions.
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Mikko Marttala
Director,
Project Development & Financing
