A Reserve Forecast-based Approach to Determining Credit Collateral Requirements in Electricity Markets Conference Paper uri icon


  • 2015 IEEE. In electricity markets, credit collateral requirements for participants have traditionally been set based on historical price data that may not properly reflect future risks. A new predictive approach to determining credit risk is proposed in this paper. For any market that prices reserves in the real-time market, correlation exists between available reserve levels and real-time energy prices. This paper shows that it is possible to forecast hourly system-wide available reserves in a realistic system such as the Electric Reliability Council of Texas (ERCOT) market for up to a week ahead with high confidence. A credit collateral call can then be issued based on predicted system conditions due to the strong correlation between system-wide reserves and real-time energy prices. This in turn, would lower the risk of default for participants as it better reflects their actual risk. Case studies based on a representative ERCOT simulation show that potential scarcity conditions can be successfully identified as far as four days out.

name of conference

  • 2015 IEEE Power & Energy Society General Meeting

published proceedings


author list (cited authors)

  • Chang, S., Xie, L. e., & Dumas, J.

citation count

  • 1

complete list of authors

  • Chang, Sean||Xie, Le||Dumas, John

publication date

  • July 2015