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GHG Reporting Consolidator

Consolidate Scope 1 and Scope 2 emissions into a single CO2e inventory

Field guide: GHG Reporting Basics

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Free greenhouse gas inventory planning calculator. Enter Scope 1 stationary combustion, local fugitive/process gas releases, and Scope 2 purchased electricity with eGRID 2023 location-based CO2e factors. The output is a planning worksheet, not a GHGRP filing, e-GGRT submission, Scope 2 market-based claim, state inventory, assurance package, or compliance opinion.

Pro Tip: For Scope 2, using the right eGRID subregion matters. EPA eGRID2023 Revision 2 lists NYUP at 242.776 lb CO2e/MWh and MROW at 926.552 lb CO2e/MWh, so the same electricity use can screen almost four times higher by region. Confirm the eGRID subregion, reporting year, and whether your program needs location-based, market-based, utility-specific, or international factors.

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How It Works

  1. Enter Scope 1 Combustion Sources

    Add each fuel-burning source with fuel type and annual activity data. The local rows are Part 98-style defaults that still need source-category, HHV, tier, fuel-record, CEMS, permit, and reporting-year review.

  2. Enter Scope 1 Fugitive/Process Emissions

    Add refrigerant, SF6, process CO2, or custom gas screens in kg. Verify gas identity, mass-balance records, GWP basis, and applicable subpart or voluntary-program method before reporting.

  3. Enter Scope 2 Electricity

    Input annual electricity consumption in MWh and select an eGRID 2023 subregion for a location-based calculator. Market-based Scope 2, RECs, PPAs, green tariffs, and supplier-specific factors are not evaluated.

  4. Review Source Warnings

    Use the breakdown to find large sources, then verify boundaries, records, program rules, inventory management plan, state/local requirements, and qualified environmental review before relying on the number.

Built For

  • Corporate sustainability teams screening Scope 1 and Scope 2 data before protocol review
  • Facility managers organizing fuel, fugitive gas, and purchased-electricity records
  • Environmental consultants checking arithmetic before GHGRP, state, CDP, SBTi, or customer-method review
  • Energy managers identifying large emissions sources for reduction planning
  • Facilities comparing direct-emissions screens against possible Part 98 or state applicability questions

Assumptions

  • Combustion rows are local Part 98-style defaults that require source-category, fuel-record, HHV, and tier-method review.
  • GWP values use a local AR5 planning basis and may not match the required program table.
  • Grid rows use selected EPA eGRID 2023 Revision 2 total-output CO2e factors.
  • Scope 2 is location-based only; market-based Scope 2 and contractual instruments are not evaluated.

Limitations

  • Scope 3 emissions (supply chain, transportation, product use) not included.
  • Market-based Scope 2 accounting, RECs, PPAs, green tariffs, supplier-specific factors, and hourly matching are not supported.
  • Does not determine GHGRP, state, permit, ESG, assurance, or inventory-management-plan requirements.
  • Does not include process-specific, mobile-source, purchased steam/heat/cooling, or source-test/CEMS workflows.
  • eGRID factors are U.S.-only; international grid factors not included.

References

  1. 40 CFR Part 98 - Mandatory Greenhouse Gas Reporting
  2. EPA eGRID - Emissions & Generation Resource Integrated Database (2023 Revision 2)
  3. GHG Protocol Corporate Accounting and Reporting Standard
  4. GHG Protocol Scope 2 Guidance
  5. IPCC Fifth Assessment Report (AR5) - Global Warming Potentials
  6. EPA Center for Corporate Climate Leadership - Scope 1 and Scope 2 Inventory Guidance

Frequently Asked Questions

Scope 1 covers direct GHG emissions from sources owned or controlled by the facility: fuel combustion in boilers/generators, process emissions, and fugitive emissions (refrigerant leaks, natural gas leaks). Scope 2 covers indirect emissions from purchased electricity, steam, or heating/cooling. A third category, Scope 3, covers supply chain and product use emissions but is not included in this tool.
eGRID subregions are EPA electricity-grid regions used for regional average emissions factors. The app uses selected eGRID 2023 total-output CO2e factors for location-based screening. Confirm the correct subregion, reporting year, and program method before reporting.
Part 98 applicability depends on covered source categories, direct emissions, subpart rules, calculation methods, and rule-specific instructions. A 25,000 MT CO2e planning calculator should trigger qualified review, but this app does not determine reporting obligations or prepare e-GGRT data.
Scope 3 emissions need different activity data, category rules, supplier information, life-cycle models, and reporting boundaries than this simple Scope 1 and location-based Scope 2 worksheet. Add Scope 3 only under the protocol or stakeholder requirement that applies to your organization.
Disclaimer: Planning screen only. The local rows and eGRID factors help organize Scope 1 and location-based Scope 2 arithmetic, but they are not a GHGRP filing workflow, e-GGRT submission, state inventory, market-based Scope 2 claim, ESG disclosure, assurance package, permit calculation, or compliance opinion.

Guides for this job

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GHG Reporting Basics

Scope 1, 2, and 3 greenhouse gas emissions, EPA mandatory reporting rule (40 CFR 98), GWP values, CO2 equivalent calculations, and reporting thresholds.

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