This report presents findings from an analysis of baseline data collected as the first step in an impact evaluation of the Millennium Challenge Corporation’s energy sector project in Tanzania. The evaluation will use rigorous methods to estimate impacts of two project components: (1) an activity to provide new transmission and distribution lines to more than 300 communities in seven regions of Tanzania, and (2) a financing scheme initiative to provide low-cost connections to about 5,800 households in 29 of these communities.