GHGenius 5 Changelog

 Significant changes have been made to GHGenius since 4.03a.

New and Extended Pathways

  • Sorghum ethanol pathway added.
  • Natural gas to gasoline pathway added.
  • Heavy duty EV pathways added.
  • LFG to FTD pathway added.
  • LFG to DME pathway added.
  • Spent bleaching earth to biodiesel pathway added.
  • Palm sludge oil to biodiesel pathway added.
  • Removed switched NG. CNG and LNG now separate concurrent pathways.
  • Added LNG powered ships to Equip Emiss sheet and changed freight emissions so that LNG marine engines can have different relative efficiency than LNG Road engines.
  • HD NG exhaust emissions.
  • RNG Blends for transportation added as new outputs.
  • Added methanol as marine fuel.
  • Added lipids for renewable gasoline pathway (Co-processing).

Updated Data

  • Updated US natural gas methane emission factors for the US using 2013 and 2014 inventories.
  • Methanol from NG pathway has revised energy requirements based on data from several operating facilities.
  • Update barley fertilizer inputs from Grains Council footprint study.
  • Updated camelina data from project for Danforth Centre, St Louis.
  • Biofuel feedstock yield series updated.
  • Canadian sources of crude oil refined data updated to 2014 actuals. Revised forecasts. 
  • Updated emission info for residential wood stoves. Two wood stove types on the Output Summary sheet.
  • Aligned US product import regions with crude oil regions. Updated venting and flaring regions and data.
  • Updated US crude and products petroleum flow with data to 2014.
  • Updated US petroleum supply sheet.
  • Updated Canadian crude oil types refined with StatsCan data.
  • Updated power gen in Canada using Stats Can data to 2014. Updated to 2017 NEB Forecast. Adjusted forecasts to align with new data.
  • Updated US power generation data to 2015 data from 2011.
  • Revised soybean residue nitrogen content with updated data.
  • Updated US coal production and methane emissions. Energy Outlook 2015 and 2015 GHG Inventory report. Added time series data and approach.
  • Updated US Uranium data.
  • Updated SF6 emissions in power gen with data from 2013 NIR. 7.76 t and 1988 PJ.
  • Updated US Refining energy and product splits.
  • Updated US crude quality to balance with reported refined crude quality.
  • Updated OGP time series and revised rate of increase in energy use. Added last year dropped first year.
  • Regionalized corn yield for w Can.
  • Reduced MBM yield for tallow based on published data for US industry.
  • Updated Mexico power production and petroleum flow.
  • Updated US NG emissions with 2013 NIR. Supersedes work done for NRCan.
  • NOx and Sox emission update for US power production
  • Updated NG prod by type with NEB 2016 forecast.
  • Updated crude oil production data to 2014 with StatsCan and new forecasts from NEB 2016.
  • Updated NG emissions for Canada.
  • Updated AD pathway.
  • Updated US NG emissions with 2014 NIR data.
  • Updated CNG exhaust emissions for Near Zero NOx engine.
  • Updated rail energy use time series for US and Canada. Added time series for domestic water freight.
  • Reduced default coal use in US Corn plants and increased NG use based on CRC work.
  • Ethanol plant chemicals updated.
  • Reduced emissions for enzyme based on novozyme input.
  • Removed US SOC gain based on latest USDA GHG Inventory.
  • Updated fertilizer emissions based on Cheminfo report, GREET and EU data.
  • Increased energy used for yeast.
  • Lime data for ag use converted to limestone data
  • Rendering energy updated.

 Data + Structure

  • Updated data on farm energy use for corn and soybeans with inputs now on a per hectare basis allowing for independent variation of energy efficiency and yield.
  • Fraction of US NG used in Central Canada is variable by year with StatsCan data. Very small impact on the results.
  • EU regional ag biomass yield added to model.
  • Mexico ag biomass yield data added to model.
  • Power gen. Split solar out from hydro for power gen. Added operation and main emissions for electricity plants.
  • Regionalized corn and soybean energy.
  • Regionalized types of fertilizer applied in Canada.

Model Structure and Interface

  • NG inputs for alt fuel processes are now entered in MJ rather than litres to avoid confusion.
  • Data presentation on LDV Summ, HDV Summ, and freight emissions is revised with more detail on individual gases for the upstream and downstream stages.
  • Individual gases summary added to feedstock emissions.
  • All other farm energy inputs on basis of per hectare.
  • New energy balance summary by fuel for all pathways.
  • Presentation of data on Biomass Prod sheet is revised.
  • Presentation of data on fertilizer sheet with respect to biomass production is revised.
  • Additional chemicals added for alt fuel processes.
  • Biodiesel production emissions are now separated from oil crushing emissions on the results sheets. This provides additional clarity on the emissions and additional precision with the calculations. It also makes it easier to model cases where the oil production and biodiesel production happen in different regions.
  • Mexico is now collapsed to one region. Power Gen updated.
  • Four European regions added to the model.
    • Detailed natural gas supply to the EU regions.
    • LNG supply and regasification are supply options.
    • Crude oil supply and refining energy added to petroleum products in the new regions.
    • Electricity for EU added.
    • Can do NG and power by EU country with new default buttons on Power Gen and NG Supply sheets.
  • Added individual gases output on output summary sheet. By gas and by stage.
  • CAC emissions by stage on Output Summary
  • Expanded regionalization of refined products and refining to the 6 Canadian and US regions, reduces compromises.
  • Harmonized corn ethanol inputs with other alt fuel formats.
  • Revised LNG inputs so that it is the same as other alt fuels.
  • Expanded flexibility with GWPs and options.
    • 2013 values are added.
    • 20 year GWPs are now included as an option.
    • Short lived gases can be included. 
    • Added biogenic GWPs for methane CO and VOC so that the CO2 from the oxidation of these gases is not included.
  • Updated energy use for service stations and terminals.
  • Addressed the styles limitation with new format. New look provides more consistency of style and a smaller file size.
  • Deleted information that is no longer used. 
    • Removed feedstock adj sheet.
    • Removed print macro sheet.
  • Added other energy inputs, LPG, biodiesel, etc. for alt fuel production pathways.
  • LHV values for NG and LPG now use calculated H content rather than H by difference.
  • Increased flexibility in modeling gas transmission pipeline energy use.
    • Gas engines vs turbines can be modelled for each country and the electricity use can also be modeled.
  • Changed fugitive emissions from NG systems to using GWP for methane compare to GWP for gas since most data is entered based on methane emissions.
  • Revisions to the sensitivity solver and the Monte Carlo tool to make it easier to specify the variable cells.
  • Additional probability distribution functions for the Monte Carlo tool.
  • Additional outputs for Sensitivity Solver.
  • Added regional default sheet and revised the way that regional default values are added to the model.
  • Continued to enhance functionality of the fix circular reference macro.
  • Added a 2 dimensional sensitivity solver allowing users to vary two inputs at a time instead of one.
  • Removed ribbon menu to address issues with Excel 2013 and 2016. Re-wrote a number of the macros.
  • Reorganized default buttons, added Mexico and India default buttons.
  • Changed input units for sequestered CO2 in ethanol pathways and fixed an error in calculation of energy and emission corproduct.