This report contains RMI’s work with the City of San Francisco. RMI assisted in the development of data, analysis and program design in support of a comprehensive energy resource investment strategy (ERIS). The ERIS prioritizes San Francisco’s electric resource options based on cost, performance, and environmental impact. The options include energy efficiency, cogeneration, and solar and wind power, as well as conventional gas-fired generation and new transmission lines. The report also describes RMI’s work helping the city design policies and programs to improve energy efficiency and harness distributed and renewable energy resources, while insuring an adequate and reliable supply of electricity for its residents. This report contains a scenario analysis for inclusion in the preliminary San Francisco Electricity Resource Plan.