PowerTap Gen3 Technology

PowerTap’s Differentiated Technology

Key Points
  • Blue, on-site, low-cost hydrogen production withSMR+CCS, producing zero-carbon fuel withminimal additional infrastructure
  • Small footprint – under 1,000 sqft, easy to tie in toexisting gas stations
  • Operationally tested for over a decade – basedon the PowerTap Generation 2 facility, with 14operating stations in the US (not owned /operated under PowerTap)(1)
  • 20+ issued patents focusing on key technology inthe fabrication and reaction catalysts

Source: Levelized Cost of Production Calculated by EIN using data from “California Power-to-Gas and Power-to-Hydrogen Near-Term Business Case Evaluation” Eichman, Josh, Flores-Espino, Francisco, National Renewable Energy Laboratory

  1. Nuvera manufactured and sold PowerTap Gen 2 stations / platforms to third parties
  2. Cost to individual station owner: most hydrogen fueling stations buy and ship offsite hydrogen fromchemical companies
  3. Excludes maintenance costs and carbon credit benefits
  4. Source: The Wall Street Journal, “Betting on Hydrogen”, October 23, 2020
  5. Production excludes capital expenditure and includes maintenance costs

PowerTap Produces Low CI Hydrogen

Key Points

PowerTap stationsproduce sustainablehydrogen through usingrenewable natural gas(“RNG”) as feedstock andCCUS

  • Using RNG allowsPowerTap to achieve negative carbon intensity scores as the full cycle of production is net carbon negative
  • All PowerTap stations will be equipped with CCUS to capture CO2 emissions

Source: California Air Resources Board (“CARB”), PowerTap management team estimates. “Production Alternatives” carbon intensity values estimated from existing pathways using CARB methodology.

  1. Production excludes capital expenditure and includes maintenance costs
  2. Assumes centralized SMR hydrogen production, gaseous hydrogen transportation, calculated with CA-GREET3.0.

Key PowerTap Facility Components

Key Points
  • PowerTap distributed hydrogen stations rely on steam methanereforming technology with a carbon capture technology embedded in the process to remove emissions and lower carbon intensity
  • Technology relies on ~10 main components to convert feedstocknatural gas and water to distributable hydrogen
    • PowerTap holds active patents for five of these components in theUnited States and abroad
  • The Company works with several suppliers in an exclusive capacity tosource the raw components and feedstock of the process
    • Renewable Natural Gas
    • Hydrogen Generators

Note: Distribution center process overview as of June 2021; design shown is subject to changes

PowerTap Hydrogen Gen3 vs. Gen2

PowerTap Generation 3 vs Generation 2
  • Goals
    • Build on the current PowerTap Gen2 technology and increase hydrogen production output from 50 kg/dayto 1,250 kg/day (i.e., 25x larger)
    • Develop a cost-efficient and environmentally friendly modular steam reformer that respects strict emission regulations
    • Build two (2) fully functional Gen3 distribution centers by end of 2022
  • Target
    • Carbon capturing capabilities that will reduce the amount of the CO2 in the flue gas of the reformingprocess or process for high purity CO2 for commercial markets
Key Innovations
  • Desulfurization module
    • Injected H2 to create H2S to extend catalysis life from 1 to 8 years
  • Steam Methane Reformer
    • Lowers reactor’s temperature / pressure to extend vessel’s life span
    • Added a reflective coating to create better heat transfer across tubes to increase the reactor’s efficiency
  • Steam Shift Reactor
    • Front load the input with Reformant compressor to increase H2 production
    • Sin gas is recycled to the burner system to decrease the amount of feedstock required to produce heat forthe burners
  • Pressure Swing Absorption Module
    • Allows for carbon capture (85% of CO2 in tanks onsite) and purified H2 for storage and compression
  • Active Storage
    • Reduces overall footprint and allows system to draw down on 95% of the total H2 stored vs. currentavailable vs. standard gas and liquid solutions
    • Maintains output > 875 bars continuously regardless of gas level

OneH2 acquired all hydrogen generation and production assets belonging to Nuvera Fuel Cells, LLC in February 2019. The acquisition provides OneH2 with a limited license tomanufacture small scale hydrogen generators for forklifts