Facebook LinkedIn Twitter
Shop

IAEE Members and subscribers to The Energy Journal: Please log in to access the full text article or receive discounted pricing for this article.

Prepress Content: The following article is a preprint of a scientific paper that has completed the peer-review process and been accepted for publication within The Energy Journal.

While the International Association for Energy Economics (IAEE) makes every effort to ensure the veracity of the material and the accuracy of the data therein, IAEE is not responsible for the citing of this content until the article is actually printed in a final version of The Energy Journal. For example, preprinted articles are often moved from issue to issue affecting page numbers, and actual volume and issue numbers. Care should be given when citing Energy Journal preprint articles.

Hedging Strategies: Electricity Investment Decisions under Policy Uncertainty

Abstract:
Given uncertainty in long-term carbon reduction goals, how much non-carbon generation should be developed in the near-term? This research investigates the optimal balance between the risk of overinvesting in non-carbon sources that are ultimately not needed and the risk of underinvesting in non-carbon sources and subsequently needing to reduce carbon emissions dramatically. We employ a novel framework that incorporates a computable general equilibrium (CGE) model of the U.S. into a two-stage stochastic approximate dynamic program (ADP) focused on decisions in the electric power sector. We solve the model using an ADP algorithm that is computationally tractable while exploring the decisions and sampling the uncertain carbon limits from continuous distributions. The results of the model demonstrate that an optimal hedge is in the direction of more non-carbon investment in the near-term, in the range of 20-30% of new generation. We also demonstrate that the optimal share of non-carbon generation is increasing in the variance of the uncertainty about the long-term carbon targets, and that with greater uncertainty in the future policy regime, a balanced portfolio of non-carbon, natural gas, and coal generation is desirable.

Download Executive Summary Purchase ( $35 )

Download Appendix 

Keywords: Energy policy, Uncertainty, Electricity, Investment, Emissions, General equilibrium, Approximate dynamic programming

DOI: 10.5547/01956574.39.1.jmor

References: Reference information is available for this article. Join IAEE, log in, or purchase the article to view reference data.


Published in Volume 39, Number 1 of The Quarterly Journal of the IAEE's Energy Economics Education Foundation.