The Eastern Regional Technical Advisory Committee (ERTAC) is a collaborative effort to improve emission inventories among the Northeastern, Mid-Atlantic, Southeastern, and Lake Michigan area states, other member states, industry representatives, and multi-jurisdictional planning organization (MJO) representatives.

ERTAC has developed the Energy Generating Unit (EGU) Projection Tool which can be used to grow base year (BY) hourly EGU air emissions inventories into future years (FY). The purpose of this is to inform air quality impact assessment on both annual and episodic peak bases. The tool uses BY hourly US EPA Clean Air Markets Division (CAMD) data, fuel-specific growth rates, and state-provided information such as retirements and controls to estimate future emissions.

ERTAC EGU workgroups maintain and distribute reference runs for the contiguous United States (CONUS).  Input and output files for each reference run are provided in the menu below. The BY and FY hourly data are not included due to file size, but are available upon request. The enhanced summary files provide NOx and SO2 criteria pollutant data for annual and ozone season time periods.

Please send questions or comments regarding the ERTAC EGU Projection Tool to smccusker@marama.org and jstclair@marama.org.

Input files

  • Unit Availability Files (UAF) for All Years: 2016, 2020, 2023, 2028
    • BY, unit-specific information derived from CAMD NEEDS database, state input, Energy Information
      Agency (EIA) Form 860, and NERC data
    • States added information on planned units, retirements, fuel switches, etc.
  • Control Files for All Years: 2016, 2020, 2023, 2028
    • Future, unit-specific changes and the effect on the unit emissions—provided by states
  • Seasonal Control Files for All Projection Years 2020, 2023, 2028
    • Future, unit-specific emission factors
    • Originates from state-provided comments
    • Especially helpful in characterizing FY emission rates from seasonal control devices
  • Group Total Files for All Projection Years 2020, 2023, 2028
    • Emissions caps or budgets applicable to multiple states in FYs
  • State Total Files for All Projection Years 2020, 2023, 2028
    • State level emissions caps or budgets in FYs
  • Growth Files for All Years 2016, 2020, 2023, 2028
    • Developed from the EIA Annual Energy Outlook (AEO) and North-American Electric Reliability Committee
      (NERC) estimates and other state-provided information
  • Input Variable Files for All Years 2016, 2020, 2023, 2028
    • Variables used in this run of the model

Output Files

  • Criteria Pollutants for 2016
  • Annual FF10 Files for 2016

Projections

Input Files

  • UAF Files for All Projection Years
    • BY, unit-specific information derived from CAMD NEEDS database, state input, Energy Information Agency
      (EIA) Form 860, and NERC data
    • States added information on planned units, retirements, fuel switches, etc.
  • Control Files for All Projection Years
    • Future, unit-specific changes and the effect on the unit emissions—provided by states
  • Seasonal Control Files All Projection Years
    • Future, unit-specific emission factors
    • Originates from state-provided comments
    • Especially helpful in characterizing FY emission rates from seasonal control devices
  • Group Total Files All Projection Years All Projection Years
    • Emissions caps or budgets applicable to multiple states in FYs
  • State Total Files All Projection Years
    • State level emissions caps or budgets in FYs
  • Growth Files for 2017, 2018, 2019, 2020, 2023, 2025, 2028, 2030
  • Demand Transfer Files for 2017, 2018, 2019, 2020, 2023, 2025, 2028, 2030
  • Input Variable Files for 2017, 2018, 2019, 2020, 2023, 2025, 2028, 2030
    • Variables used in this run of the model

Projections

Input Files

  • UAF Files for All Projection Years
    • BY, unit-specific information derived from CAMD NEEDS database, state input, Energy Information Agency (EIA) Form 860, and NERC data
    • States added information on planned units, retirements, fuel switches, etc.
  • Control Files for All Projection Years
    • Future, unit-specific changes and the effect on the unit emissions—provided by states
  • Seasonal Control Files All Projection Years
    • Future, unit-specific emission factors
    • Originates from state-provided comments
    • Especially helpful in characterizing FY emission rates from seasonal control devices
  • Group Total Files All Projection Years
    • Emissions caps or budgets applicable to multiple states in FYs
  • State Total Files All Projection Years
    • State level emissions caps or budgets in FYs
  • Growth Files for 2017, 2018, 2019, 2020, 2023, 2025, 2028, 2030 
  • Input Variable Files for 2017, 2018, 2019, 2020, 2023, 2025, 2028, 2030
    • Variables used in this run of the model

Projections

Run Documentation of ERTAC EGU CONUS 2.5 L2

Input Files

  • UAF Files for All Projection Years
    • BY, unit-specific information derived from CAMD NEEDS database, state input, Energy Information Agency
      (EIA) Form 860, and NERC data
    • States added information on planned units, retirements, fuel switches, etc.
  • Control Files for All Projection Years
    • Future, unit-specific changes and the effect on the unit emissions—provided by states
  • Seasonal Control Files All Projection Years
    • Future, unit-specific emission factors
    • Originates from state-provided comments
    • Especially helpful in characterizing FY emission rates from seasonal control devices
  • Group Total Files All Projection Years
    • Emissions caps or budgets applicable to multiple states in FYs
  • State Total Files All Projection Years
    • State level emissions caps or budgets in FYs
  • Growth Files for 2017, 2023
  • Input Variable Files for 2017, 2023
    • Variables used in this run of the model
  • Point Source Inventory File 2017 (V2.5L2)

Projections

Run Documentation of ERTAC EGU CONUS 2.5

Input Files

  • UAF Files for All Projection Years
    • BY, unit-specific information derived from CAMD NEEDS database, state input, Energy Information Agency (EIA) Form 860, and NERC data
    • States added information on planned units, retirements, fuel switches, etc.
  • Control Files for All Projection Years
    • Future, unit-specific changes and the effect on the unit emissions—provided by states
  • Seasonal Control Files All Projection Years
    • Future, unit-specific emission factors
    • Originates from state-provided comments
    • Especially helpful in characterizing FY emission rates from seasonal control devices
  • Group Total Files All Projection Years
    • Emissions caps or budgets applicable to multiple states in FYs
  • State Total Files All Projection Years
    • State level emissions caps or budgets in FYs
  • Growth Files for 2017, 2018, 2019, 2021, 2023, 2028, 2030
  • Input Variable Files for 2017, 2018, 2019, 2021, 2023, 2028, 2030
    • Variables used in this run of the model
  • Point Source Inventory File2011 (V2.5)

Projections

Run Documentation of ERTAC EGU CONUS 2.4

Input Files

  • UAF Files for All Projection Years
    • BY, unit-specific information derived from CAMD NEEDS database, state input, Energy Information Agency (EIA) Form 860, and NERC data
    • States added information on planned units, retirements, fuel switches, etc.
  • Control Files for All Projection Years
    • Future, unit-specific changes and the effect on the unit emissions—provided by states
  • Seasonal Control Files All Projection Years
    • Future, unit-specific emission factors
    • Originates from state-provided comments
    • Especially helpful in characterizing FY emission rates from seasonal control devices
  • Group Total Files All Projection Years
    • Emissions caps or budgets applicable to multiple states in FYs
  • State Total Files All Projection Years
    • State level emissions caps or budgets in FYs
  • Growth Files for 2017, 2018, 2019, 2023, 2028
  • Input Variable Files for 2017, 2018, 2019, 2023, 2028
    • Variables used in this run of the model

Projections

Run Documentation of ERTAC EGU CONUS 2.3

Input Files

  • UAF Files for 2018, 2028
    • BY, unit-specific information derived from CAMD NEEDS database, state input, Energy Information Agency (EIA) Form 860, and NERC data
    • States added information on planned units, retirements, fuel switches, etc.
  • Control Files for 2018, 2028
    • Future, unit-specific changes and the effect on the unit emissions—provided by states
  • Seasonal Control Files for 2018, 2028
  • Growth Files for 2018, 2028
  • Input Variable Files for 2018, 2028
    • Variables used in this run of the model

Projections