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Therefore, AVERT provides a national marginal emission factor for the Equivalencies Calculator.

EE and RE programs are not generally assumed to affect baseload power plants that run all the time, but rather marginal power plants that are brought online as necessary to meet demand.

A marginal emission factor is the best representation to estimate which fossil-fired units EE/RE are displacing across the fossil fleet. Calculating the emission impacts of EE and RE on the electricity grid requires estimating the amount of fossil-fired generation and emissions being displaced by EE and RE. Most users of the Equivalencies Calculator who seek equivalencies for electricity-related emissions want to know equivalencies for emissions reductions from energy efficiency (EE) or renewable energy (RE) programs. national weighted average CO 2 marginal emission rate to convert reductions of kilowatt-hours into avoided units of carbon dioxide emissions. The Greenhouse Gas Equivalencies Calculator uses the AVoided Emissions and geneRation Tool (AVERT) U.S. These are calculated using GWPs from the Intergovernmental Panel on Climate Change’s Fourth Assessment Report. Go to the equivalencies calculator page for more information.Ī note on global warming potentials (GWPs): Some of the equivalencies in the calculator are reported as CO 2 equivalents (CO 2E). This page describes the calculations used to convert greenhouse gas emission numbers into different types of equivalent units.