MC Formula Protocol for H35HF Fueling

Research output: NRELPresentation


A publicly available and verified high-flow fueling protocol for H35 medium-duty (MD) and heavy-duty (HD) hydrogen-powered buses and trucks does not exist. This could lead to transit agencies needing to select suppliers for purchase of new fleet vehicles, and to multiple providers responding with incompatible vehicle designs in the future. With the expansion of MD/HD vehicles using 35 MPa storage, there will be a need for publicly accessible H35HF stations, and these will require the use of a standardized prescriptive fueling protocol. The development of a fully tested and validated H35 high-flow (H35HF) MC Formula fueling protocol for MD and HD buses and trucks can provide guidelines to design H35 stations and vehicles, enable other manufacturers and vehicle original equipment manufacturers (OEMs) to enter this space, and ultimately accelerate to popularize the hydrogen market.
Original languageAmerican English
Number of pages19
StatePublished - 2023

Publication series

NamePresented at the 2023 U.S. Department of Energy (DOE) Hydrogen Program Annual Merit Review and Peer Evaluation Meeting (AMR), 5-8 June 2023, Arlington, Virginia

NREL Publication Number

  • NREL/PR-5700-85921


  • fueling protocol
  • H2FillS
  • H35HF
  • HD
  • heavy-duty buses
  • MD
  • medium duty buses
  • protocol validation testing


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