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August 30, 2021

Marengo Project – BESS, US

By Carmen

The Marengo Project – BESS is a 20,000kW energy storage project located in Chicago, Illinois, US.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2016 and was commissioned in 2018.


The Marengo Project – BESS is owned by Swiss Green Electricity Management Group (100%).

The key application of the project is frequency regulation.

Contractors involved

Leclanche and Swiss Green Electricity Management Group have delivered the battery energy storage project.

Additional information

The project will respond almost instantly to the continually changing needs of the grid, allowing PJM to deliver higher-quality reliable electrical service, at a lower cost, to end users in the 13 states and the District of Columbia.


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.

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