Renewable Generation Effect on Net Regional Energy Interchange: Preprint

Victor Diakov, Gregory Brinkman, Paul Denholm, Robert Margolis, Thomas Jenkin

Research output: Contribution to conferencePaper

2 Scopus Citations


Using production-cost model (PLEXOS), we simulate the Western Interchange (WECC) at several levels of the yearly renewable energy (RE) generation, between 13 percent and 40 percent of the total load for the year. We look at the overall energy exchange between a region and the rest of the system (net interchange, NI), and find it useful to examine separately (i) (time-) variable and (ii) year-average components of the NI. Both contribute to inter-regional energy exchange, and are affected by wind and PV generation in the system. We find that net load variability (in relatively large portions of WECC) is the leading factor affecting the variable component of inter-regional energy exchange, and the effect is quantifiable: higher regional net load correlation with the rest of the WECC lowers net interchange variability. Further, as the power mix significantly varies between WECC regions, effects of 'flexibility import' (regions 'borrow' ramping capability) are also observed.
Original languageAmerican English
Number of pages6
StatePublished - 2015
EventIEEE PES General Meeting - Denver, Colorado
Duration: 26 Jul 201530 Jul 2015


ConferenceIEEE PES General Meeting
CityDenver, Colorado

NREL Publication Number

  • NREL/CP-6A20-63657


  • large scale integration
  • PV and wind variability
  • renewable generation
  • transmission


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