System Resilience Benefits of Dual-Fuel Capable Generators

Daniel Levie, Jiazi Zhang, Gregory Brinkman, Matthew Irish, Jessica Lau

Research output: NRELPoster


The growing dependency on natural gas (NG) for power generation raises challenges for ensuring the resilience of power systems during extreme cold weather. Dual-fuel capable generators that can switch from burning NG to distillate fuel oil during an NG shortage over one way to alleviate these challenges. In this study, the impacts of gas unavailability on the IEEE 73-bus reliability test system (RTS) with 2019 updated generation mixture are explored. An extension to the standard production cost model formulation of unit commitment and economic dispatch is proposed to allow the representation of dual-fuel capable generators that can switch fuels between NG and distillate oil with a specified oil tank capacity and tank refueling capability. The operation of the system under gas unavailability with 0%, 25%, 50%, 75%, and 100% of combined cycle and combustion turbine generators as dual-fuel capable with a one-day supply of fuel oil are simulated using PLEXOS, a production cost model. The dual-fuel generator performance, unserved energy, and system costs are fully assessed.
Original languageAmerican English
StatePublished - 2022

Publication series

NamePresented at the 2022 IEEE Power & Energy Society General Meeting, 17-21 July 2022, Denver, Colorado

NREL Publication Number

  • NREL/PO-6A40-83472


  • dual-fuel capable generator
  • energy resiliency
  • fuel security
  • gas unavailability
  • production cost model


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