Project to demonstrate ClearSign Core™ Gen 2 Flex Fuel Process Burner designed to reduce emissions and energy costs at Kern Energy's facility

TULSA, OK / ACCESS Newswire / September 30, 2026 / ClearSign Technologies Corporation (NASDAQ:CLIR) ("ClearSign" or the "Company"), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and support the use of cleaner fuels including hydrogen, and Kern Energy, a critical California fuel supplier and renewable fuel pioneer, announce today that The U.S. Department of Energy's ("DOE") Industrial Technologies Office ("ITO") has selected ClearSign and Kern Energy for its Industrial Technology Validation ("ITV") program. The project is to support the installation and operation of ClearSign's Core™ Gen 2 Flex Fuel Process Burner at Kern Energy's facility.