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- State and Local Emissions
- Energy CO2 Emissions by State
- State Greenhouse Gas Inventories
- Resources for Inventory Development
Resources for Inventory Development
Related Links
Corporate Inventories
Individual Emissions
National Parks
Schools and Universities
EPA assists state and local governments in the inventory process by providing technical assistance and guidance on inventory preparation. State and Local Governments use inventories to track emission trends, set goals, develop strategies and policies, and assess progress. EPA and a number of organizations have developed guidelines and protocols that have been used successfully by state and local governments to create GHG inventories.
Please read the descriptions below carefully to help select the appropriate tool, protocol, or training opportunity for your needs. Inventory resources for non-governmental entities are provided in the related links box.
- Methodology and Tools
- Training Opportunities
For additional information about greenhouse gas emissions, emissions sources, inventories and projections, please visit EPA’s main Climate Change-Greenhouse Gas Emissions Page.
Methodology and Tools
State Government Tools and Resources
State Inventory and Projection Tool
The State Inventory Tool is an Excel-based tool that uses methods from the Intergovernmental Panel on Climate Change and the U.S. National Greenhouse Gas Inventory. The SIT updates and replaces the previously published Emissions Inventory Improvement Program (EIIP) volume 8 guidance. The tool generates a top-down estimate of greenhouse gas emissions at the U.S. state level. Estimates include direct emissions only; they do not include emissions from indirect sources such as offsite waste disposal or electricity consumption. The state inventory guidance and tool contain methods and data that are specific to U.S. states and may not be appropriate for scales other than the state level or for countries other than the U.S.
The Projection Tool (PT) allows users to create a simple forecast of emissions through 2020 based on historical emissions and projections of future energy consumption, population, and economic factors.
To receive a draft copy of the State Inventory Tool, Projection Tool, and accompanying User’s Guides, please contact Andrea Denny (denny.andrea@epa.gov).
Clean Air and Climate Protection Software
EPA funded the joint National Association of Clean Air Agencies (NACAA) and ICLEI-Local Governments for Sustainability project to develop the Clean Air and Climate Protection Software (CACPS). States can use this software to develop greenhouse gas inventories for government operations, or as an alternate approach to developing a state-wide inventory. Note that CACPS does not include as many source categories as the State Inventory Tool, but does allow the simultaneous creation of a criteria air pollutant inventory. CACPS also allows users to forecast emissions and create an emissions reduction plan.
Members of NACAA, the National Association of State Energy Officials (NASEO), the National Association of Regulatory Utility Commissions (NARUC) should contact ICLEI directly to receive the tool and access to training. State officials who are not members of NASEO or NACAA may contact Denise Mulholland (mulholland.denise@epa.gov) to receive a copy of the software. For more information or to view a demo of the software, visit ICLEI’s CACP website 
.
Portfolio Manager
ENERGY STAR has created Portfolio Manager, an interactive energy management tool that allows users to track and assess energy and water consumption across their entire portfolio of buildings in a secure online environment. State Governments can use the tool to create an inventory of greenhouse gas emissions from government buildings, set efficiency investment priorities, identify under-performing buildings, verify efficiency improvements, and receive EPA recognition for superior energy performance. Online trainings are available.
Emissions & Generation Resource Integrated Database
EPA’s Emissions & Generation Resource Integrated Database (eGRID) contains a comprehensive inventory of environmental attributes of electric power systems including air emissions data for nitrogen oxides, sulfur dioxide, carbon dioxide, and mercury. The data are organized in a series of Microsoft Excel files that can be downloaded via the eGRID website. State governments can use eGRID to find data on emissions from electricity generation within their state.
Local Government Tools and Resources
Clean Air and Climate Protection Software
EPA funded the joint National Association of Clean Air Agencies (NACAA) and ICLEI-Local Governments for Sustainability project to develop the Clean Air and Climate Protection Software (CACPS). Local Governments can use this software to develop greenhouse gas and criteria air pollutant inventories for government operations, or to create a community-wide emissions estimate. CACPS also allows users to forecast emissions and create an emissions reduction plan.
Members of NACAA or ICLEI should contact ICLEI directly to receive the tool and access to training. Local governments who are not members of either organization may contact Denise Mulholland (mulholland.denise@epa.gov) to receive a copy of the software. For more information or to view a demo of the software, visit ICLEI’s CACP website .
Local Government Greenhouse Gas Protocol
ICLEI – Local Governments for Sustainability, in collaboration with the California Air Resources Board, The California Climate Action Registry, and The Climate Registry, has developed a draft greenhouse gas protocol for local government operations in the United States. The protocol is a guidance document which provides a framework for consistent quantification and categorization of greenhouse gas emissions at a local government level. The Protocol draft can be downloaded from ICLEI’s site .
Portfolio Manager
ENERGY STAR has created Portfolio Manager, an interactive energy management tool that allows users to track and assess energy and water consumption across their entire portfolio of buildings in a secure online environment. Local Governments can use the tool to create an inventory of greenhouse gas emissions from government buildings, set efficiency investment priorities, identify under-performing buildings, verify efficiency improvements, and receive EPA recognition for superior energy performance. Online trainings are available.
Training Opportunities
In Fall 2007, EPA offered a series of webcasts to aid local, regional, and state governments in creating greenhouse gas inventories. Recordings of all three installments of the Webcast Training Series: Greenhouse Gas Inventory 101 for Local, Regional, and State Governments are available below.
First Session: Creating an Inventory
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Topics include understanding the purpose and scope of a GHG inventory, inventories vs. registries, setting a boundary, setting a baseline, quantification approaches, certification and reporting protocols, comparability, and level of effort.
- Recording (Windows Media file) (1:28, 10.1M) | Transcript (PDF) (19 pp., 61K)
- Presentation (PDF) (27 pp., 432K)
Second Session: Translating Inventory Results into Action
Topics include describing the various uses of GHG inventories, including benchmarking, tracking emissions and progress over time, setting emission reduction goals, policy options for meeting goals, evaluating policy options, and processes for setting goals and policies.
- Recording (Windows Media file) (1:16, 8.6M) | Transcript (PDF) (19 pp., 67K)
- Presentation (PDF) (30 pp., 389K)
Third Session: State Inventory Tool (SIT) Training Session
Topics include background information on the development of the SIT modules and a live demonstration of the CO2 from Fossil Fuel Combustion Module, Natural Gas and Oil Module, Synthesis Module, and Projection Tool.
- Recording (Windows Media file) (1:16, 11.8M) | Transcript (PDF) (18 pp., 51K)
- Presentation (PDF) (28 pp., 691K)