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Emissions Data

Tools by Topic

State Inventory Tool (SIT)

EPA’s State Inventory Tool is an interactive spreadsheet model designed to help states develop GHG emissions inventories. SIT gives users the option of applying their own state-specific numbers or using default data pre-loaded for each state. The default data is gathered by federal agencies and other sources covering fossil fuels, agriculture, forestry, waste management, and industry. SIT provides a streamlined way to update an existing inventory or complete a new inventory and is also accompanied by updated guidance describing best practices.

Emissions Forecasting Tool

This spreadsheet model builds on the design of the State Inventory Tool (SIT) to help states create forecasts of business-as-usual (BAU) GHG emissions through 2020. The tool estimates future emissions through a combination of linear extrapolation of SIT results and economic, energy, population, and technology forecasts conducted by the federal government. The tool can be customized, allowing states to enter their own assumptions about future growth and consumption patterns.

Power Profiler

This tool can be used to evaluate the environmental benefits of choosing cleaner sources of energy. The Power Profiler is a Web-based tool that allows users to evaluate the air pollution and greenhouse gas impact of their electricity choices. It is particularly useful with the advent of electric customer choice, which allows many electricity customers to choose the source of their power. Using only a ZIP code, the tool generates a report describing the characteristics of one’s electricity use.

Emissions & Generation Resource Integrated Database (eGRID)

eGRID is a comprehensive source of data on the environmental characteristics of all domestic electric power generation. It contains data on emissions and resource mix for virtually every power plant and company that generates electricity in the U.S. eGRID also provides numerous search options, including features of individual power plants, generating companies, states, and regions of the power grid. The current version contains U.S. power plant emissions totals for 1996 through 2000, and for 2004.

State Energy CO2 Data Tables

The tables provide state CO2 emission inventories from fossil fuel combustion, showing annual emissions of CO2 by sector (commercial, industrial, residential, transportation and electric utilities) from 1990 through 2003. The data tables use fuel consumption data from the Energy Information Administration’s State Energy Data 2003 consumption tables in combination with emission factors from the U.S. Emissions Inventory 2006. EPA’s data may differ slightly from state-authored inventories because of methodological differences, including scope of coverage, underlying data, emission factors, and assumptions.

State Carbon Intensity Database

The State Carbon Intensity Database measures carbon emissions in relation to the value of the production activities that generate them. The tool helps states understand the factors that contribute to changes in carbon emissions economic efficiency over time, as well as differences across states. States can use the database to analyze trends in their carbon intensity, compare their situation to other states (and the U.S. as a whole), and to target programs and policies that lower emissions and grow their economy.

Combined Heat and Power (CHP) Emissions Calculator

The CHP emissions calculator is an educational tool that compares the anticipated emissions from a CHP system to the emissions from systems using separate heat and power (SHP). A user can select from a large number of different SHP system profiles, compare them to a CHP system (characterized by the user), and estimate the carbon, CO2, SO2 and NOX emissions from both systems and the corresponding emissions reductions achieved by the CHP system. In addition to estimating emission reductions, the CHP Emissions Calculator presents the carbon equivalency of these emissions reductions in terms of acres of trees planted and number of cars removed from the road.

The Clean Air and Climate Protection Software (CACPS)

CACPS is a Windows-based software tool that allows states and localities to analyze the impact of various air pollution control scenarios on traditional air pollutants and greenhouse gases (GHGs). The tool is divided into government and community modules, with each type allowing users to supply data on electricity and fuel-use reductions to analyze GHGs and air pollution impacts. For the community module, CACPS is subdivided into residential, industrial, commercial, transportation, and waste sectors. In the government module, sectors include: buildings, vehicle fleet, employee commute, streetlights, water/sewage, and waste.

COBRA - Co-Benefits Risk Assessment Tool

The COBRA model is a screening tool used to: 1) Approximate the impact of emission changes on ambient air pollution; 2) Translate this into health effect impacts; and 3) Monetize these impacts. COBRA enables policy analysts to obtain a first-order approximation of the costs and benefits of different mitigation policies under consideration. The software quickly compares outcomes in terms of air quality or health effects. COBRA presents results in tabular as well as geographic form to facilitate the visualization of the changes.

The National Energy Modeling System (NEMS)

NEMS is a general equilibrium energy-economic model of the United States. It projects the production, import, conversion, consumption, and prices of energy, subject to assumptions on macroeconomic and financial factors, world energy markets, resource availability and costs, behavioral and technological choice criteria, cost and performance characteristics of energy technologies, and demographics. There are three classes of modules in NEMS: Supply, Demand, and Conversion. This makes the modeling system unique in its comprehensive treatment of supply-side technologies (particularly in the electricity sector), and its detailed treatment of energy demand at the end-use level.

Long-range Energy Alternatives Planning System (LEAP)

The LEAP model is a scenario-based modeling tool designed to project energy supply and demand, and evaluate energy policy options. The tool evaluates the physical, economic and environmental impacts of alternative scenarios to help guide the selection of appropriate energy policies. LEAP includes a Technology and Environmental Database (TED) that provides extensive information describing the technical characteristics, costs and environmental impacts of a wide range of energy technologies including existing technologies, current best practices and next generation devices.

Greenhouse Gas Equivalencies Calculator

This calculator enables organizations and individuals to quickly and easily translate greenhouse gas reductions from units typically used to report reductions (e.g., metric tons of carbon dioxide equivalent) into terms that are easier to conceptualize. These include such metrics as gallons of gasoline, barrels of oil, the number of cars not driven for one year, or the number of acres of forest preserved from deforestation. The online tool also allows users to work backwards and calculate greenhouse gas emissions from a known quantity of kilowatt-hours or gallons of gasoline, or a given number of cars and trucks not driven for one year.

Emissions and Allowance Tracking System (EATS)

This is a comprehensive registry system for collecting, verifying, and managing emissions and tradable allowance data for national and international emissions trading programs. EATS comes as a web-based application, which acts as the customer-accessible registry, and a Windows-based application, used to provide program set-up functionality and accessible only to the registry administrator. EATS key functions include: account management; allowance tracking; emission offset tracking; emission source management; emission reporting and verification; emission and allowance reconciliation; and public reporting.

Calculation, Reporting and Verification Tool (CRAVe)

CRAVe is a comprehensive and integrated platform to help organizations calculate their emissions. CRAVe uses fuel and activity data to calculate emissions, quality check the data and submit reports to the proper authorities. This flexible and adaptable tool is specifically designed to accommodate different rules and calculation methods of various emissions reporting schemes, while also allowing users to enter supplemental data and attach files, such as spreadsheets or documents that contain additional data for program managers and/or evaluators.

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