The district energy systems in Minneapolis and St. Paul are undergoing ambitious plans to reduce emissions and transition to cleaner energy sources. These systems, known for their efficiency in heating and cooling buildings, are now facing pressure to decarbonize due to the goals of eliminating greenhouse gas emissions by midcentury. Operators like Cordia Energy in Minneapolis and District Energy in St. Paul are implementing various strategies, from replacing natural gas boilers with electric models to recovering heat from wastewater treatment plants. Cordia Energy aims to achieve a 30% emission reduction by 2030 and ultimately reach net zero by 2050. Similarly, District Energy St. Paul is working on tapping waste heat from a wastewater plant to significantly cut carbon emissions, with plans to provide 92% of energy from carbon-free or carbon-neutral sources by 2028. These initiatives not only contribute to the reduction of greenhouse gases but also set a precedent for sustainable urban infrastructure development.