The Metropolitan Council Environmental Services, in collaboration with CenterPoint Energy and Synagro, has completed a major energy efficiency project at the Blue Lake Water Resource Recovery Facility in Shakopee. The project incorporates more renewable biogas into plant operations and earned the Metropolitan Council a rebate of $152,690 through CenterPoint's energy efficiency programs.
As designed, this project, identified by Synagro, is expected to save energy equivalent to the annual emissions generated by 225 Minnesota homes and achieve approximately $162,000 in energy cost savings per year.
"We work to connect our customers with energy efficiency projects to help them save money, energy, and reduce emissions attributed to their energy use," said Brad Steber, CenterPoint's Vice President of Minnesota Gas. "The Blue Lake custom biogas project represents the possibilities that exist for achieving emissions reductions through strategic collaboration and commitment to creative innovation for the benefit of our shared customers and communities throughout Minnesota.
For wastewater treatment, solids are processed into fertilizer pellets through a drying system that also produces biogas, a renewable fuel that can be leveraged for operations. These energy efficiency improvements allow the facility to safely use biogas to reduce emissions.
"Millions of gallons of wastewater flow to our facilities daily, carrying an enormous, untapped energy resource and we're unlocking it," said Leisa Thompson, General Manager, Metropolitan Council Environmental Services. "From raw wastewater heat to stored energy in biosolids, this project transforms how we think about treatment. We aren't just cleaning water; we're turning treatment facilities into energy generators reducing our operational region's reliance on natural gas and building a more sustainable future."
Blue Lake, the second-largest Metropolitan Council water resource recovery facility and the third largest in Minnesota, treats an average of 27 million gallons of wastewater each day, helping protect public health and the environment.
"This energy-efficiency project has been a true collaborative effort between Synagro, the Metropolitan Council Environmental Services and CenterPoint, providing sustainable benefits for our customer and the community," said Nick Davern, Senior Plant Manager, Synagro Technologies, Inc.
Customer participation in CenterPoint's Minnesota energy efficiency programs has reduced emissions by nearly 18.8 million metric tons over the last 32 years and saved customers approximately $2.6 billion. To learn more about CenterPoint's Minnesota energy efficiency programs, visit CenterPointEnergy.com/SaveEnergy.
About CenterPoint Energy, Inc.
As the only investor owned electric and gas utility based in Texas, CenterPoint Energy, Inc. (NYSE: CNP) is an energy delivery company with electric transmission and distribution, power generation and natural gas distribution operations that serve more than 7 million metered customers in Indiana, Minnesota, Ohio and Texas. As of March 31, 2026, the company owned approximately $47.8 billion in assets. With approximately 8,800 employees, CenterPoint Energy and its predecessor companies have been in business for more than 150 years. For more information, visit CenterPointEnergy.com.
