GHGenius 5.02

GHGenius 5.02 is a major version release that contains new datasets, new pathways, new features, and many bug fixes.

Microsoft has recently been rolling out changes to how Office handles macros in files downloaded from the web. Depending on your version of Office, you may need to take new and extra steps to allow the macros in GHGenius. Microsoft has provided a page with many details on this change, and most users will need to follow these steps to allow macros.

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Full patch notes are below the break.

Changelog:

New Pathways

  • Added five bio oils from sewage sludge, manure, organic waste, MSW, or RDF.
    • Added their corresponding refined bio oils.
  • Added tall soap to tall oil as a feedstock for biodiesel and hydrogenated fuels.
  • Ammonia from natural gas and electricity added to Freight Emissions as marine fuels.
  • Methanol from electricity added to Freight Emissions as marine fuel.
  • Hydrogen from wood pellets added.
  • CO2 added to Feedstock Emissions, based on the input values on Alt Fuel Prod.

New Features

  • Added a switch for many finished fuels that allows a user to ignore storage/dispensing emissions in the fuel distribution and storage stage. This is useful when modelling multi-region fuel pathways. Default behaviour of Yes mirrors previous model version.
  • Split the previous coproducts stage into three, Feedstock Coproducts, Avoided Emissions, and Fuel Coproducts.
  • Split the previous land use emissions stage into two, Direct Land Use Change and Land Management Emissions.
  • The default order of operations for coproducts has changed. Energy and mass allocation is calculated AFTER displacement. This allows the results for those energy/mass coproducts to be identical to the main fuel. This options is switched on the Coprods sheet.
  • Added renewable diesel as a possible fuel used in feedstock production (ie farm use)
  • Moved gas leaks and flares into fuel production emissions.
  • Moved LNG liquefaction from dispensing into fuel production.
  • Added an input to choose between fossil or biogenic CO2 for electrofuels.
  • Added the user grid option to ammonia from electricity, in line with other electrofuels.
  • Added hydrogen from electrolysis to the fuels effected by the electrofuels grid dropdown.
  • Added placeholder fuels to Alt Fuel Prod's other fuel inputs
  • Hydrogen as a chemical input now has a dropdown for different types of hydrogen production. In addition to the existing electrolysis and steam methane reforming (SMR), there are now options for SMR with carbon capture, pyrolysis, and SMR from RNG.
  • Energy for feedstock transmission has been split into two rows, feedstock transmission, and any feedstock transmission of the feedstock(s). This also resulted in some changes to Upstream Results, but no new rows were necessary.
  • Adjusted formatting on Coprods sheet for clarity
  • Adjusted commonly used coproducts
    • "Other Liquid" is now naphtha, with newly added fuel characteristics
    • "Other Gaseous" is renamed LPG, with no changes
    • Fuel gas displaces natural gas to industry
  • Adding avoided emissions coproduct to manure pathways - bio-oil from manure, CRNG from AD and organic waste
  • Added more default values and dropdowns for selection of methane values for organic waste and anaerobic digestion. The dropdowns are on the Coprods sheet.
  • Added a dropdown and lookup table for emissions displaced by avoiding landfilling. The dropdowns are on the Coprods sheet.
  • Regionalized the methane emissions from hydro power.
  • EV EER values can now be adjusted by average temperature. This is done automatically for Canadian provinces.
  • Renewable gasoline added to Exhaust Emissions. Previously it was calculated based on RFG.
  • Renewable propane added to Exhaust Emissions. Previously it was calculated based on LPG.
  • Added a new sheet for BC LCFS. It combines data from Upstream Results HHV with fuel use data from Exhaust Emissions.

New Data

  • Canadian power forecasts have been updated
  • Rail transportation energy updated
  • India power generation updated
  • Yield and fertilizer data on Biomass Prod updated
  • US electricity generation updated to 2020
  • US electricity generation forecast updated from EIR Annual Energy Outlook 2021
  • Added GWP options from the IPCC 6th report with 20, 100, and 500 year outlooks
  • Updated percent annual changes to crops on Biomass Prod
  • Added Trinidad and Tobago as a country option
  • Updated N2O emission factors for Canada according to the values used in the 2022 National
    Inventory Report. For regions outside of Canada applied the same ratio for direct N2O
    emissions from organic fertilizers to synthetic N fertilizer as Canada used.
  • Soil Carbon changes for Canada were updated to use three year average values (2018-
    20120). The soil carbon data was the same data in the 2022 NIR. This uses a new
    methodology compared to previous reports. The soil carbon changes for perennial to Annual
    transitions were restricted to none or the 1951 base year. The default is none.
  • EERs for some fuels were adjusted to values based on the latest literature review.
  • Added hydrogen peroxide as a chemical input.
  • Added calcium hydroxide as a chemical input.
  • Added cellulose as a coproduct.
  • Adjusted the emissions displaced by CO2 capture at ethanol plants.

Bug Fixes

  • Fixed dropdowns for alt fuels used in farming
  • RDF to MA was using an incorrect feedstock transmission value on Upstream Results HHV
  • Fixed sequestration showing the wrong values when sequestering RNG from AD
  • Added RNG from OW to Equip Emis Factors so sequestration is properly calculated independent of RNG from AD
  • Electricity generated as a coproduct and allocated by energy was incorrectly including fuel distribution and dispensing.
  • Soy biodiesel was incorrectly including fuel distribution and dispensing when using mass or energy allocation.
  • Changed labelling of CRNG by AD to more consistently be labelled as CRNG from Manure/Grass.
  • Added the fertilizer manufacture and CO2, H2S removed from NG stages to the LDV and HDV transportation sections of Output Summary.
  • When sequestering bio-based pathways, the "wood" row will more accurately be represented in the energy estimate of row 29 (ie: use RDF or straw values when appropriate). This should not change any results.
  • Changed the methane slip rate to apply the loss rate (default 1%) to the gas produced as opposed to the input feedstocks.
  • Fixed tallow and yellow grease incorrectly scaling wood as a fuel input.
  • Added combustion to the displacement credit of fuel gas.
  • Palm oil, SBE, and their biodiesels were incorrect on Upstream Results LHV.
  • Fixed palm oil and SBE biodiesel outputs on Energy Balance.
  • Hydrogen from renewable fuels has had major changes to feedstock transmission.
  • Fixed fuel type breakdown in butanol, gasoline from ng/wood, diesel from used oil fuel distribution.
  • Changed the way we estimate g-sequestered/GJ on the Sequestration sheet. This does not change the amount sequestered, but should much more accurately reflect the amount sequestered.
  • Fixed an issue with organic waste using the wrong emission factor in fuel production.
  • Fixed many fuels using inappropriate emission factors, largely applied to fuel inputs that default to zero.