Autonomous efficiency improvement or income elasticity of energy demand: Does it matter?
Observations of historical energy consumption, energy prices, and income growth in industrial economies exhibit a trend in improving energy efficiency even when prices are constant or falling. Two alternative explanations of this phenomenon are: a productivity change that uses less energy and a structural change in the economy in response to rising income. It is not possible to distinguish among these from aggregate data, and economic energy models for forecasting emissions simulate one, as an exogenous time trend, or the other, as energy demand elasticity with respect to income, or both processes for projecting energy demand into the future. In this paper, we ask whether and how it matters which process one uses for projecting energy demand and carbon emissions. We compare two versions of the MIT Emissions Prediction and Policy Analysis (EPPA) model, one using a conventional efficiency time trend approach and the other using an income elasticity approach. We demonstrate that while these two versions yield equivalent projections in the near-term, that they diverge in two important ways: long-run projections and under uncertainty in future productivity growth. We suggest that an income dependent approach may be preferable to the exogenous approach.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Scott, Michael J. & Sands, Ronald D. & Edmonds, Jae & Liebetrau, Albert M. & Engel, David W., 1999. "Uncertainty in integrated assessment models: modeling with MiniCAM 1.0," Energy Policy, Elsevier, vol. 27(14), pages 855-879, December.
- Manne, Alan & Mendelsohn, Robert & Richels, Richard, 1995. "MERGE : A model for evaluating regional and global effects of GHG reduction policies," Energy Policy, Elsevier, vol. 23(1), pages 17-34, January.
- Henry D. Jacoby & Richard S. Eckaus & A. Denny Ellerman & Ronald G. Prinn & David M. Reiner & Zili Yang, 1997. "CO2 Emissions Limits: Economic Adjustments and the Distribution of Burdens," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3), pages 31-58.
- Richard B. Howarth & Lee Schipper & Bo Andersson, 1993. "The Structure and Intensity of Energy Use: Trends in Five OECD Nations," The Energy Journal, International Association for Energy Economics, vol. 0(Number 2), pages 27-46.
- Sue Wing, Ian & Eckaus, Richard S., 2007. "The implications of the historical decline in US energy intensity for long-run CO2 emission projections," Energy Policy, Elsevier, vol. 35(11), pages 5267-5286, November.
- Hertel, Thomas, 1997. "Global Trade Analysis: Modeling and applications," GTAP Books, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University, number 7685, November.
- S. Paltsev & J. Reilly & H. Jacoby & A. Gurgel & G. Metcalf & A. Sokolov & J. Holak, 2007.
"Assessment of U.S. Cap-and-Trade Proposals,"
0705, Massachusetts Institute of Technology, Center for Energy and Environmental Policy Research.
- Sergey Paltsev & John M. Reilly & Henry D. Jacoby & Angelo C. Gurgel & Gilbert E. Metcalf & Andrei P. Sokolov & Jennifer F. Holak, 2007. "Assessment of U.S. Cap-and-Trade Proposals," NBER Working Papers 13176, National Bureau of Economic Research, Inc.
- Stephen C Peck & Thomas J. Teisberg, 1992. "CETA: A Model for Carbon Emissions Trajectory Assessment," The Energy Journal, International Association for Energy Economics, vol. 0(Number 1), pages 55-78.
- Edmonds, Jae & Wise, Marshall & Barns, David W, 1995. "Carbon coalitions : The cost and effectiveness of energy agreements to alter trajectories of atmospheric carbon dioxide emissions," Energy Policy, Elsevier, vol. 23(4-5), pages 309-335.
- Andy S. Kydes, 1999. "Energy Intensity and Carbon Emission Responses to Technological Change: The U.S. Outlook," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3), pages 93-121.
- Babiker, Mustafa H. & Metcalf, Gilbert E. & Reilly, John, 2003. "Tax distortions and global climate policy," Journal of Environmental Economics and Management, Elsevier, vol. 46(2), pages 269-287, September.
- Mustafa H. Babiker & Gilbert E. Metcalf & John Reilly, 2002. "Tax Distortions and Global Climate Policy," Discussion Papers Series, Department of Economics, Tufts University 0211, Department of Economics, Tufts University.
- Mustafa H. Babiker & Gilbert E. Metcalf & John Reilly, 2002. "Tax Distortions and Global Climate Policy," NBER Working Papers 9136, National Bureau of Economic Research, Inc.
- Richard B. Howarth & Lee Schipper, 1991. "Manufacturing Energy Use in Eight OECD Countries: Trends through 1988," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4), pages 15-40.
- William W. Hogan & Dale W. Jorgenson, 1991. "Productivity Trends and the Cost of Reducing CO2 Emissions," The Energy Journal, International Association for Energy Economics, vol. 0(Number 1), pages 67-86. Full references (including those not matched with items on IDEAS)
When requesting a correction, please mention this item's handle: RePEc:eee:eneeco:v:30:y:2008:i:6:p:2785-2798. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Dana Niculescu)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.