Cornerstone Sustainability Data Initiative
About Cornerstone Sustainability Data Initiative
Cornerstone is a sustainability data initiative that maintains and publishes key US environmental datasets, including the US Environmentally-Extended Input-Output (USEEIO) family of models, the U.S. EPA's GHG Emission Factors Hub, and eGRID electricity emission factors, originally developed by the U.S. Environmental Protection Agency (EPA). USEEIO provides open emission factors across more than 400 sectors of the US economy and is widely used for Scope 3 corporate accounting, policy analysis, and academic research. The GHG Emission Factors Hub provides emission factors for a wide range of fuels, transportation modes, refrigerants, waste, and other activities commonly used in greenhouse gas inventories. eGRID provides detailed electricity generation emissions data for estimating the emissions intensity of grid-supplied electricity in the United States.
Visit Cornerstone Sustainability Data Initiative websiteDatasets from Cornerstone Sustainability Data Initiative
GHG Emission Factors Hub
| Property | Value |
|---|---|
| Description | Cornerstone is a sustainability data initiative that maintains and publishes key US environmental datasets, including the US Environmentally-Extended Input-Output (USEEIO) family of models, the U.S. EPA's GHG Emission Factors Hub, and eGRID electricity emission factors, originally developed by the U.S. Environmental Protection Agency (EPA). USEEIO provides open emission factors across more than 400 sectors of the US economy and is widely used for Scope 3 corporate accounting, policy analysis, and academic research. The GHG Emission Factors Hub provides emission factors for a wide range of fuels, transportation modes, refrigerants, waste, and other activities commonly used in greenhouse gas inventories. eGRID provides detailed electricity generation emissions data for estimating the emissions intensity of grid-supplied electricity in the United States. |
| Source type | Public-private partnership |
| Original dataset URL | URL |
| Year released | 2026 |
| Geography | US |
| Sector | |
| Type of data | Activity-based |
| Emission results | CO2e - CO2 - CH4 - N2O |
| Data Transformation | The source reports emissions in the US Customary Units, which have been converted to the International System of Units to ensure consistency. |
License
| Property | Value |
|---|---|
| Type of license | Creative Commons Attribution 4.0 International (CC BY 4.0) |
| License URL | URL |
Data quality
| Property | Value |
|---|---|
| Data quality assurance | Vetted by Climatiq. For further information on data quality assurance, see: [https://www.climatiq.io/methodology#Data-Quality](https://www.climatiq.io/methodology#Data-Quality) |
| Quality flag(s) | Methodology It is unknown whether the source includes the radiative forcing (RF) effect that reflects the impact of contrails and high-altitude release of GHGs for Air Travel and Air Freight categories. |
Methodology
| Property | Value |
|---|---|
| IPCC AR method |
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| LCA boundary |
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| Scope applicability |
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| Emissions breakdown |
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| Methodology description | The U.S. GHG Emission Factors Hub is a regularly updated set of default emission factors for organisational greenhouse gas reporting, originally developed by the US Environmental Protection Agency (EPA) and now published by Cornerstone. The Hub compiles emission factors from a range of authoritative U.S. EPA datasets and other recognised sources, including the EPA Greenhouse Gas Reporting Program, the Inventory of U.S. Greenhouse Gas Emissions and Sinks, eGRID, the Waste Reduction Model (WARM), IPCC global warming potentials, and other government and technical references where appropriate. It covers a broad range of emission categories including stationary combustion, mobile combustion, purchased electricity, upstream and downstream transportation, business travel, employee commuting, refrigerants, and waste. For full details, see the Cornerstone GHG Emission Factors Hub: https://zenodo.org/records/20403776. |
Explore the Cornerstone Sustainability Data Initiative dataset
Featured Emission Factors in Cornerstone Sustainability Data Initiative
Explore All- Go to Electricity supplied from grid
Electricity supplied from grid
Energy Energy - Go to Rubber and plastics hoses and belting manufacturing (purchaser prices)
Rubber and plastics hoses and belting manufacturing (purchaser prices)
Materials and Manufacturing Materials and Manufacturing - Go to All other miscellaneous chemical product and preparation manufacturing (purchaser prices)
All other miscellaneous chemical product and preparation manufacturing (purchaser prices)
Materials and Manufacturing Materials and Manufacturing - Go to Electricity supplied from grid: T&D losses
Electricity supplied from grid: T&D losses
Energy Energy - Go to Electricity supplied from grid (non-baseload)
Electricity supplied from grid (non-baseload)
Energy Energy - Go to Scheduled freight air transportation (purchaser prices)
Scheduled freight air transportation (purchaser prices)
Transport Transport
Other Sources
Explore All- Go to GHG Protocol
GHG Protocol
The GHG Protocol is the de-facto standard-setting organisation for greenhouse-gas accounting. As well as producing guidance on estimating and categorising emissions, it also provides a set of the most commonly-used emission factors including energy consumption, transportation, waste management, and industrial processes.
- Go to ecoinvent
ecoinvent
ecoinvent is a Swiss not-for-profit association that provides a Life Cycle Inventory (LCI) database that supports various types of sustainability assessments. This data enables users to gain a deeper understanding of the environmental impacts of their products and services. ecoinvent provides multiple climate impact indicators. We use "IPCC 2007 (superseded), climate change, global warming potential (GWP100)" for AR4 CO2e emisison factor values and "IPCC 2013, climate change, global warming potential (GWP100)" for AR5 values.
- Go to IPCC
IPCC
The Intergovernmental Panel on Climate Change (IPCC) is a United Nations body that assesses the scientific evidence related to climate change and offers guidance to governments and policymakers on climate-related issues. IPCC provides a range of emission factors in their reports including energy-related emissions, industrial processes, agriculture, and land use and waste management activities.