The Office of Energy Efficiency and Renewable Energy (EERE) of the U.S. Department of Energy (DOE) leads the Federal Government's efforts to provide reliable, affordable, and environmentally sound energy for America, through its research, development, and deployment (RD & D) programs. EERE invests in high-risk, high-value research and development (R & D) that, conducted in partnership with the private sector and other government agencies, accelerates the development and facilitates the deployment of advanced clean energy technologies and practices. The RD & D activities of EERE are designed to improve the nation's readiness to address future energy needs. This document summarizes the results of the benefits analysis of EERE's programs, as described in the FY 2004 Budget Request. EERE is adopting a benefits framework developed by the National Research Council (NRC) to represent the various types of benefits resulting from the energy efficiency technology improvements and renewable energy technology development prompted by EERE programs. Specifically, EERE's benefits analysis focuses on three main categories of energy-linked benefits-economic, environmental, and security. These measures are not a complete representation of the benefits or market roles of efficiency and renewable technologies, but provide an indication of the range of benefits provided.