A Fast Flexibility-Driven Generation Portfolio Planning Method for Sustainable Power Systems

Navdeep Dhaliwal, François Bouffard, Mark O'Malley

Research output: Contribution to journalArticlepeer-review

16 Scopus Citations


We are witnessing an acceleration in the uptake of renewable energy in power systems. Because of the associated variability and uncertainty of renewables, power systems need to have an adequate supply of flexibility to allow for suitable management of short-term operations. So far most of the work in this area has neglected how flexibility needs associated with renewables are fulfilled as part of dispatchable generation capital investments decisions. To address this challenge, we propose an approach to plan the dispatchable generation mix of a power system as needed to counteract variability and uncertainty associated with significant shares of variable renewable generation. The approach exploits the linear time-invariant feature of variable generation variability using historical phase planes of capacity (in MW) and ramp (in MW/min) to bridge the gap between long-term capacity planning and short-term intra-hour flexibility needs. This approach is much more computationally tractable than other proposals, while also being able to capture adequately short-term operational features like ramping and net load variability. Numerical tests are performed on realistic datasets to substantiate the effectiveness of the approach.
Original languageAmerican English
Pages (from-to)368-377
Number of pages10
JournalIEEE Transactions on Sustainable Energy
Issue number1
StatePublished - 2021

NREL Publication Number

  • NREL/JA-5C00-79373


  • bulk power system planning
  • computational tractability
  • flexibility
  • ramping
  • renewable energy generation
  • variability


Dive into the research topics of 'A Fast Flexibility-Driven Generation Portfolio Planning Method for Sustainable Power Systems'. Together they form a unique fingerprint.

Cite this