Abstract:This study compares decisions to acquire fossil fuel-powered vehicles with decisions about or consideration of electric vehicles for fleets operating medium- and heavy-duty vehicles. Based on interviews with decisionmakers in 25 such organizations, we characterize the organizations according to their internal decisionmaking structure (i.e., who within the organization takes part in decisions) and the heterogeneity of the external networks involved in those decisions. We examine whether internal structure and external heterogeneity impact an organization’s decisions. This provides insights into whether some organization types are more willing and able to adapt to electric trucks, and which may require different types of support to consider electric vehicles. Identifying external actors identifies other groups that may may need to be engaged to facilitate truck electrification.