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The Economic Effects of Interregional Trading of Renewable Energy Certificates in the U.S. WECC

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  • Andres P. Perez
  • Enzo E. Sauma
  • Francisco D. Munoz
  • Benjamin F. Hobbs

Abstract

In the U.S., individual states enact Renewable Portfolio Standards (RPSs) for renewable electricity production with little coordination. Each state imposes restrictions on the amounts and locations of qualifying renewable generation. Using a co-optimization (transmission and generation) planning model, we quantify the long run economic benefits of allowing flexibility in the trading of Renewable Energy Credits (RECs) among the U.S. states belonging to the Western Electricity Coordinating Council (WECC). We characterize flexibility in terms of the amount and geographic eligibility of out-of-state RECs that can be used to meet a state’s RPS goal. Although more trade would be expected to have economic benefits, neither the size of these benefits nor the effects of such trading on infrastructure investments, CO2 emissions and energy prices have been previously quantified. We find that up to 90% of the economic benefits are captured if approximately 25% of unbundled RECs are allowed to be acquired from out of state. Furthermore, increasing REC trading flexibility does not necessarily result in either higher transmission investment costs or a substantial impact on CO2 emissions. Finally, increasing REC trading flexibility decreases energy prices in some states and increases them elsewhere, while the WECC-wide average energy price decreases.

Suggested Citation

  • Andres P. Perez & Enzo E. Sauma & Francisco D. Munoz & Benjamin F. Hobbs, 2016. "The Economic Effects of Interregional Trading of Renewable Energy Certificates in the U.S. WECC," The Energy Journal, , vol. 37(4), pages 267-296, October.
    • Handle: RePEc:sae:enejou:v:37:y:2016:i:4:p:267-296
    DOI: 10.5547/01956574.37.4.aper
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    References listed on IDEAS

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