On July 8, 2025, Ontario announced its decision to proceed with domestic bio-based content requirements for both diesel fuel and gasoline in the Ontario market. At least 75 percent of the renewable content required in diesel fuel and 64 percent of the renewable content required in gasoline must be produced in Canada. This makes Ontario the second province in Canada to announce domestic content requirements. According to Canadian industry, Ontario's decision to adopt the new rules was motivated by the Canadian federal government's nonresponse to the U.S. Clean Fuel Production Tax Credit (45Z).