Echogen develops and builds thermal energy systems based on supercritical carbon dioxide, turning waste heat into power and storing electricity as heat for grid and industrial applications. The Akron company brings nearly two decades of sCO₂ development to hands-on engineering, with systems designed, tested, and refined by its own team rather than left at the concept stage. Its 1.5 MWth heat engine completed more than 100 hours of autonomous operation at 600°C in 2024, while its power-conversion technology is also being developed for advanced nuclear reactors.
Clean Heat TechnologiesClean Heat Technologies grew out of Lalit Chordia’s supercritical-CO2 work, begun with his first company in 1990, and now brings more than 30 years of research to commercial heat-pump development. The Pittsburgh company is known for establishing a commercial-scale direct-exchange geothermal system using CO2 and designs systems for customers seeking lower-energy heating or cooling in buildings and industrial operations.PITTSBURGH, PA
MicroEra PowerRochester-based MicroEra Power develops THERMAplus™, an on-site thermal energy storage system that helps commercial buildings shift heating and cooling loads to lower-cost, lower-carbon periods. Its tunable phase-change materials and smart controls integrate with existing HVAC equipment, while expanded laboratory space supports building and testing the system at scale. Founded by CEO Eleanor Rusling and CTO James Grieve, the company’s work is supported by NYSERDA and the U.S. Department of Energy.ROCHESTER, NY
Cleveland ThermalFor more than a century, Cleveland Thermal has produced and delivered district energy—centralized steam and chilled water—for downtown Cleveland buildings and campuses. Its Hamilton Avenue Plant and underground network serve 20 million square feet, supplying about 30% of downtown’s heating and cooling needs with reported 99.9% reliability. After switching from coal to natural gas in 2017, the system cut CO2 and greenhouse-gas emissions by 84%.CLEVELAND, OH
Super Systems IncFrom its Cincinnati headquarters, Super Systems Inc. develops and manufactures instrumentation, software, and engineered systems for the thermal processing industry. With more than 100 years of combined experience addressing industry demands, the company is known for pairing thermal-process technology with product training, technical seminars, and global support. Super Systems holds ISO 9001 certification and maintains a state-of-the-art manufacturing facility in Cincinnati.CINCINNATI, OH