This report provides an overview of bus and truck electrification in the United States. Electrification in the medium- and heavy-duty vehicle sector is increasing in the United States with California leading the way. This report draws on recent research from the ICF and other sources to present information on electric bus and truck deployment, market conditions, and some background on supportive public policies. Low commercialization for all vehicle categories other than transit buses and high upfront costs have limited deployment so far. Increasing investment in the sector from public and private sources, however, is expected to significantly increase the number of electric trucks and buses on the road in the near term. Upfront costs associated with electric trucks and buses are expected to decline through 2030 as battery prices fall, making them competitive on a total cost of ownership basis.