Rate and Bill Impacts of National Grid Rhode Island Natural Gas Programs
National Grid commissioned Synapse to develop a Microsoft Excel-based analytical model to assess the long-term rate and bill impacts of its Rhode Island energy efficiency natural gas programs. The model was designed to analyze annual and long-term rate and bill impacts from natural gas energy efficiency programs implemented over a course of three years. Synapse designed the model to analyze rate and bill impacts from natural gas energy efficiency programs in Rhode Island for four customer types: residential, income-eligible, small commercial, and large commercial and industrial (large C&I) and for each program contained within those categories. The model was designed for National Grid’s 2021–2023 Three-Year Energy Efficiency Program Plan and its 2021 Annual Program Plan, but it can be updated for subsequent prospective and retrospective analyses in assessing how the Plans meet the requirements for energy efficiency in Rhode Island.