Just outside communities in St. Clair County, Illinois, the White Clover Battery Energy Storage System will add 200 megawatts of storage capacity—enough to rapidly supply power to the local grid when demand surges or unexpected outages occur. Set to begin operations soon, this 800 megawatt-hour system works “behind the scenes,” storing clean energy—generated during low-demand periods—and delivering it during peak hours to keep homes, businesses, and essential services running smoothly.
Project introduction
Site location
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Facts & figures
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MW
battery storage capacity located in St. Clair County, Illinois
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Jobs
supported during the construction phase
$
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Million
estimated property tax revenue generated over the life of the project
Project Benefits
Good jobs for Illinois workers
The White Clover project creates around 100 construction jobs as site preparation, equipment installation, and commissioning takes place. Local contractors, trades, and service providers all play a role—from electrical and civil crews to material suppliers and transportation. Once operating, White Clover will employ a specialized team for maintenance and operations, keeping technical talent and economic activity in the region.
Lasting support for community service
White Clover is slated to generate approximately $20 million in property taxes during its operational life. These consistent revenues can help fund better classrooms, road repair, and stronger emergency services—all without new tax increases for families. That steady income gives counties like St. Clair a stronger foundation to plan for the future and improve quality of life for everyone.
Reliable energy when Illinois needs it most
Battery storage means resilience. When electricity demand spikes during a summer heat wave or a weather emergency interrupts power lines, White Clover can discharge stored energy to keep the grid balanced and reduce risk of outages. Homes, manufacturers, and public services all benefit from fewer interruptions and steadier electric service.
Stronger Electric Grid
Keeping the lights on in St. Clair County
For people in St. Clair County, a more reliable grid means more than just avoiding blackouts. It means school days are less likely to be disrupted, critical health services remain available, and businesses can plan operations with fewer interruptions. With 200 MW of batteries ready to deliver power instantly, White Clover can pick up the slack when other resources are offline or intermittent. That added flexibility helps everyone—homeowners, farmers, small businesses, and manufacturers—count on access to domestic, homegrown electricity, even as demand grows.
Powering Illinois communities for decades to come
In the years ahead, White Clover Battery Storage will quietly serve as a backbone for economic growth and everyday reliability in St. Clair County. Its tax contributions will ripple through the area, supporting school districts, helping maintain roads, and allowing first responders and local officials to make forward-thinking investments for families and businesses. The project’s benefits stretch from the construction phase—when jobs for heavy equipment operators, electricians, and laborers put food on the table—through to the long-term, as operational jobs and local lease payments support families for a generation.
Most people may never see the batteries working, but they’ll feel the results: less worry about losing power when a thunderstorm hits, or wondering if the grid can handle the next manufacturing or tech facility that wants to call Illinois home. At the end of its useful life, White Clover’s land will return to its previous use, and the community will have decades of strengthened infrastructure, expanded opportunity, and millions in new economic activity to look back on.
White Clover BESS is built on privately owned local land, with participating landowners guaranteed stable income for the next 20 years. RWE works closely with St. Clair County emergency responders, especially fire departments, to ensure all safety measures are tailored specifically to the site’s needs. As part of its commitment to responsible energy investment, RWE brings national expertise to St. Clair County while hiring locally and sustaining ties to community organizations and businesses wherever possible.