PREFACE This report documents the results of a study conducted for the National Renewable Energy Laboratory (NREL) of the U.S. Department of Energy (DOE) on how the Internet and related information and communications technologies (ICTs) may influence future supply, demand, and delivery of electricity in the United States. The DOE needs a better understanding of the important factors driving the transition toward a digital society and the likely changes that it will bring about—both to make better estimates of future energy requirements and to inform planning for its long-term energy R&D portfolio. Rather than attempt to make specific technology forecasts in a rapidly changing and highly uncertain environment, this study developed four different scenarios of ICT evolution over the 20-year period 2001–2021 and explored their implications for U.S. electricity requirements. The results are compared to the electricity use projections made by the DOE Energy Information Administration (EIA) and then discussed in relation to the R&D portfolio of the Office of Energy Efficiency and Renewable Energy (EERE). RAND SCIENCE AND TECHNOLOGY RAND is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND Science and Technology (S&T), one of RAND’s research units, assists government and corporate decisionmakers in developing options to address challenges created by scientific innovation, rapid technological change, and world events. RAND S&T’s research agenda is diverse. Its main iii iv Electricity Requirements for a Digital Society areas of concentration are science and technology aspects of energy supply and use; environmental studies; transportation planning; space and aerospace issues; information infrastructure; biotechnology; and the federal R&D portfolio. Inquiries regarding RAND Science and Technology may be directed to: Steve Rattien Director, RAND Science and Technology RAND 1200 South Hayes Street Arlington, VA 22202-5050 703-413-1100 x5219 www.rand.org/scitech