The Great Lakes are wasting a massive source of clean energy

The Great Lakes region is poised to leverage a significant, yet often overlooked, source of clean energy by reusing waste heat from industrial facilities, including nuclear power plants and data centers, as well as sewage. This innovative approach, already prevalent in northern Europe, aims to reduce carbon emissions from heating and cooling buildings, decrease consumer costs, and lessen strain on the electric grid. A key example is a proposal in Lansing, Michigan, where London-based Deep Green plans a $120 million, 24-megawatt data center. This facility is uniquely designed to transfer its excess heat directly into the Lansing Board of Water and Light's district heating system. Deep Green CEO Mark Lee highlighted a shift in perspective, noting that heat, once considered waste, is now recognized as a valuable asset due to rising electricity costs and environmental targets. The Lansing City Council is scheduled to vote on this project on April 6. Further efforts are underway in St. Paul, Minnesota, where Ever-Green Energy, led by President and CEO Luke Gaalswyk, seeks to harness heat from 172 million gallons of daily wastewater for the city's district energy system. Gaalswyk emphasized that the primary hurdles are not technological, but rather financial, organizational, and political, citing the absence of supportive policy frameworks and funding mechanisms common in Europe. Paul Kohl, board chair of the Sewer Thermal Energy Network, advocates for sewer thermal energy as a sustainable alternative for electrifying buildings, offering significantly lower electricity demand than air-source heat pumps. However, challenges include public aversion and utility reluctance to grant access to infrastructure. Experts agree that policy signals, such as tax breaks for heat recovery systems, streamlined permitting, and even waste heat taxes or efficiency standards, are crucial to incentivize collaboration and scale waste-heat recovery across the Great Lakes region.