Harmony Energy sells 200MW BESS project to EDF Renewables Polska

Written by
Jack Kelly
Harmony Energy has successfully completed the sale of its 200 MW / 400 MWh Battery Energy Storage System (BESS) project to EDF Renewables Polska, belonging to EDF Group, one of the world’s leading electricity producers. This milestone transaction reinforces Harmony Energy’s strategic focus on expanding its presence in Poland’s energy market, with proceeds set to strengthen its platform for future BESS developments.

Representing a milestone moment for the Polish energy market, the 200 MW / 400 MWh site will be one of the largest BESS in Europe.

Michał Maćkowiak, Executive Director of Harmony Energy Poland, said:

“We have ambitious plans for Poland, and this deal puts us in a strong position to develop, own and operate a significant portfolio in the country. Poland’s energy system is evolving rapidly, with growing demand for flexible storage solutions to balance its increasing share of renewables and decreasing share of coal-fired assets. This acquisition highlights the rising importance of high-quality battery storage projects, which are critical for enabling home-grown clean energy and reducing reliance on fossil fuels.

“This success gives us the resources and momentum to drive forward future developments, expanding our pipeline and ensuring we continue to deliver projects that support Poland’s transition to a cleaner, more resilient energy system. It also proves the exceptional quality of the projects being developed by Harmony Energy which was validated by this transaction.”

Furthermore, this acquisition underscores the growing demand for advanced energy storage solutions across Poland and Europe. As countries accelerate their shift to renewables, battery storage plays a vital role in stabilising grids and enabling the large-scale integration of intermittent energy sources like wind and solar.

JLL Energy and Infrastructure advised on the project transaction.

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