Combined Heat and Power Partnership
CHP Emissions Calculator
Basic Information
Download the
CHP Emissions Calculator
- CHP Emissions Calculator (XLS) (2.4 MB, About XLS
) Last updated August 29, 2012
Download the
Fuel and CO2 Emissions Savings Methodology
- Fuel and Carbon Dioxide Emissions Savings Calculation Methodology for Combined Heat and Power Systems (PDF) (32 pp, 1.3 MB) presents a recommended methodology for calculating fuel and CO2 emissions savings from CHP compared to separate heat and power.
The Combined Heat and Power (CHP) Emissions Calculator (XLS, 2.4 MB, About XLS ) compares the anticipated carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), carbon dioxide equivalent (CO2e), sulfur dioxide (SO2), and nitrogen oxide (NOx) from a CHP system to those of a separate heat and power system. The calculator uses fuel-specific CO2, CH4, and N2O emissions factors used in the EPA Greenhouse Gas Reporting Program, region-specific T&D loss values, and data from Emissions & Generation Resource Integrated Database (eGRID) 2012. The calculator also presents estimated emissions reductions as metric tons of carbon equivalent and emissions from passenger vehicles, as shown below.
The calculator is designed for users with at least a moderate understanding of CHP technology and its terminology. To learn more about CHP technologies, please visit the Catalog of CHP Technologies.
The estimate of environmental benefits of CHP generated by the calculator are appropriate for educational and outreach purposes only.
CHP Emissions Calculator
Basic Directions
The calculator provides concise instructions and default values for each of the inputs within the tool. To view input notes, move the mouse cursor over any cell with a red triangle in its upper right-hand corner.
The tool will work with a minimum of three pieces of information about the CHP system being evaluated:
- Technology type (also known as the CHP prime movers)
- Size/capacity
- Fuel type
For users who are interested in more accurate emissions estimates, the calculator allows users to specify up to 26 additional CHP system characteristics.
For detailed information and instructions, please refer to the user instructions tab included in the calculator. If you need help when using the tool, please contact the CHP Partnership helpline at (703) 373-8108 or email chp@epa.gov.