The bill establishes a Medium- and Heavy-Duty Zero-Emission Vehicle Grant Program in Minnesota, aimed at promoting the adoption of zero-emission vehicles in the commercial sector. It defines key terms such as "applicant," "grant," and "zero-emission vehicle," and outlines the program's goals, which include supporting the early deployment of zero-emission truck technology, assisting businesses in achieving decarbonization goals, and promoting access to these vehicles in environmental justice areas. The program will award competitive grants to businesses that purchase or lease eligible medium- and heavy-duty zero-emission vehicles, with specific eligibility criteria and requirements for grant recipients, including the decommissioning of diesel vehicles and maintaining insurance on the new vehicles.

Additionally, the bill mandates the development of an application process for grant distribution and authorizes the commissioner of commerce to adopt rules for program implementation. It requires reporting on the program's efficacy and the performance of funded vehicles, including data on greenhouse gas emissions reductions and operational metrics. The bill appropriates funds from the general fund to support the program, with grants awarded on a first-come, first-served basis. The effective date for the grant program is set for July 1, 2023, and it includes provisions for ongoing reporting and evaluation of the program's impact.