The Environmental Protection Agency has conditionally approved a rule that will allow for new emission credits to be offered in Maricopa County, Arizona, with the intent to help boost semiconductor companies while aiming to reach federal air quality standards. 

The rule, which was written and submitted by the municipality’s Air Quality Department, was created to provide an incentive for companies that own diesel truck fleets to retrofit or replace their vehicles with electric vehicles. The credits claimed can then be certified and banked for future use to offset future emissions.