Abstract
Understanding the potential for reducing energy demand through increased end-use energy efficiency can inform energy and climate policy decisions. However, if potential estimates are vastly different, they engender controversial debates, clouding the usefulness of energy efficiency in shaping a clean energy future. A substantive question thus arises: is there a general consensus on the potential estimates? To answer this question, this paper reviews recent studies of US national and regional energy efficiency potential in buildings and industry. Although these studies are based on differing assumptions, methods, and data, they suggest technically possible reductions of ~25–40 % in electricity demand and ~30 % in natural gas demand in 2020 and economic reductions of ~10–25 % in electricity demand and ~20 % in natural gas demand in 2020. These estimates imply that electricity growth from 2009 to 2020 ranges from turning US electricity demand growth negative, to reducing it to a growth rate of ~0.3 %/year (compared to ~1 % baseline growth).
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Notes
See Fig. ES-13 for the regional breakdown of the EPRI RAP for 2020 (EPRI 2009).
For the purposes of this paper, capital investments include equipment, installation, and operational costs for energy efficiency; program administration costs are a separate cost to the capital investments. Depending on the level of the incentive, total program costs may include capital investments in addition to program administration costs.
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Acknowledgments
This work was supported in part by a fellowship administered by the American Association for the Advancement of Science (AAAS), in cooperation with the US Environmental Protection Agency (under Cooperative Agreement No. X3 83232801). The author especially thanks Alan Sanstad of the Lawrence Berkeley National Laboratory, Joe Bryson and Jeff Brown of the US Environmental Protection Agency, and C.K. Woo of Energy and Environmental Economics for their helpful suggestions. The following individuals are thanked for providing clarification on their respectively authored studies: Omar Siddiqui of the Electric Power Research Institute; Greg Wickler of Global Energy Partners; Jon Creyts, Phil Farese, Anton Derkach, and Doug Weiss of McKinsey and Co.; and John Cymbalsky and John Conti of the Energy Information Administration. I thank Omar Siddiqui for providing information from their report in electronic form and Jon Creyts for providing unpublished data and the permission to use them in this paper.
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Sreedharan, P. Recent estimates of energy efficiency potential in the USA. Energy Efficiency 6, 433–445 (2013). https://doi.org/10.1007/s12053-012-9183-5
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DOI: https://doi.org/10.1007/s12053-012-9183-5