v2.0.0 (February 2025)

This release incorporates major changes to all sectors, including temporal data back to 2005 and fundamental changes in methodology. We also now account for industrial and agricultural emissions.

• Energy
  • Electricity and natural gas data have utility report data for 2005 and 2013-2021
  • Electricity and natural gas data are split into residential, commercial, and industrial per NREL modeling for all years
  • Electricity and natural gas are now categories in the sectors residential, commercial, and industrial
• Transportation
  • Transportation emissions are calculated using a different method; in previous versions, we used a 100/50/50 origin-destination method. Now we are using a VMT-based method.
  • Emissions estimates from previous releases should not be directly compared with this and all future releases.
  • Transportation emissions are compiled from EPA data sources, including the National Emissions Inventory (NEI), EPA EQUATES, and the Air Emissions Modeling Platform.
  • Bus, passenger, and commercial modes are accounted for.
  • Preliminary aviation emissions accounted for.
• Waste
  • Solid waste now follows IPCC guidelines instead of previous simplistic activity-EF model
  • Solid waste emissions are apportioned to CTU by population
  • Wastewater is now calculated based off county and CTU population, instead of apportioned from state totals
• Industrial
  • New sector, partially informed by previous energy work
  • New emissions data from state and federal point source data includes process emissions and additional fuel combustion
• Agriculture
  • New sector detailing emissions from livestock and crop production
  • Data sources are USDA county agriculture censuses and EPA emission factors
• Natural Systems
  • Sequestration now relies entirely on USGS NLCD model (WorldCover data removed for now)
  • Adds freshwater emissions data following National Hydrography Database and state emission factors
• Other data
  • County and CTU population data back to 2005.

What's Changed

• Fix issue of 2005 population numbers not showing in cprg_county_proportions.RDS by @LimerickSam in #96
• Solid waste data sourcing 2005 by @zeyandell in #99
• County state population time series by @eroten in #105
• Natural systems carbon stock 2005 by @ksmiff33 in #97
• Natural gas data sourcing -- 2005 by @LimerickSam in #100
• Wastewater estimates 2005-2021 by @pawilfahrt in #106
• Electricity activity and emissions data -- 2005 by @LimerickSam in #98
• Agriculture data sourcing by @pawilfahrt in #102
• Update and interpolate VMT data, update test column names by @eroten in #112
• Aviation data sourcing by @pawilfahrt in #113
• Passenger, freight mode share for CDP by @eroten in #119
• Transportation emissions, 2002 - 2022 using territorial framework by @eroten in #104
• Ctu-level population estimates by @zeyandell in #134
• Transportation - Integrate all emissions process types by @eroten in #135
• Agricultural emissions reformatting by @pawilfahrt in #131
• City level VMT dataset, VMT data updates by @eroten in #137
• Rebuild natural systems 3 by @ksmiff33 in #139
• Solid waste methodology update by @zeyandell in #146
• Industrial emissions data sourcing by @pawilfahrt in #140
• Natural systems quarto edits by @ksmiff33 in #149
• Solid waste edits by @zeyandell in #156
• Rebuild wastewater emissions by @ksmiff33 in #154
• RII bundle by @eroten in #153
• Xcel city-level electricity activity, expanded timeframe for county-level state reporting, NREL data pull expanded by @LimerickSam in #158
• Load in ancillary data by @pawilfahrt in #155
• Create submodule for transportation modeling data import cleaning by @eroten in #164
• Combine, render all Quarto updates by @eroten in #166
• Update changelog.qmd by @pawilfahrt in #169
• Inventory with 2005 baseline (v2.0.0) by @eroten in #168

Full Changelog: v1.1.1...v2.0.0