Flexibility in 21st Century Power Systems: 21st Century Power Partnership

Jaquelin Cochran, Mackay Miller, Owen Zinaman, Bryan Palmintier, Mark O'Malley, Simon Mueller, Eamonn Lannoye, Aidan Tuohy, Ben Kujala, Morten Sommer, Hannele Holttinen, Juha Kiviluoma, S.K. Soonee, Michael Milligan

Research output: NRELTechnical Report


Flexibility of operation--the ability of a power system to respond to change in demand and supply--is a characteristic of all power systems. Flexibility is especially prized in twenty-first century power systems, with higher levels of grid-connected variable renewable energy (primarily, wind and solar). This paper summarizes the analytic frameworks that have emerged to measure this characteristicand distills key principles of flexibility for policy makers.
Original languageAmerican English
Number of pages14
StatePublished - 2014

NREL Publication Number

  • NREL/TP-6A20-61721


  • 21cpp
  • flexibility
  • framework
  • power partnership
  • power systems


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