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Revision History
This page describes the revisions and updates made to the Greenhouse Gas Equivalencies Calculator since it was originally posted on EPA’s web site in February 2008.
February 17, 2009
Updated the electricity use calculation when converting reductions of kilowatt-hours into avoided units of carbon dioxide emissions: the Emissions & Generation Resource Integrated Database (eGRID) year 2005 U.S. annual non-baseload CO2 output emission rate updated from eGRID2007 Version 1.0 to eGRID2007 Version 1.1.
Updated the home electricity use calculation when converting units of avoided CO2 emissions into annual electricity use of number of homes: the eGRID U.S. annual CO2 output emissions rate was updated from eGRID2006 Version 2.1 (year 2004 data) to eGRID2007 Version 1.1 (year 2005 data).
Updated the home energy use calculation when converting units of avoided CO2 emissions into annual energy use of number of homes: the eGRID U.S. annual CO2 output emissions rate was updated from eGRID2006 Version 2.1 (year 2004 data) to eGRID2007 Version 1.1 (year 2005 data).
December 8, 2008
Updated the electricity use calculation when converting reductions of kilowatt-hours into avoided units of carbon dioxide emissions: the eGRID non-baseload national average emissions rate was updated from eGRID2006 Version 2.1 (year 2004 data) to eGRID2007 Version 1.0 (year 2005 data).