The Emissions & Generation Resource Integrated Database (eGRID) is a comprehensive source of data on the environmental characteristics of almost all electric power generated in the United States. The preeminent source of emissions data for the electric power sector, eGRID is based on available plant-specific data for all U.S. electricity generating plants that provide power to the electric grid and report data to the U.S. government. Data reported include, but are not limited to, net electric generation; resource mix (for renewable and nonrenewable generation); mass emissions of carbon dioxide (CO2), nitrogen oxides (NOx), sulfur dioxide (SO2), methane (CH4), nitrous oxide (N2O), and mercury (Hg); emission rates for CO2, NOx, SO2, CH4, and N2O; heat input; and nameplate capacity. eGRID reports this information on an annual basis (as well as by ozone season for NOx) at different levels of aggregation. eGRID2020, released in January 2022 is the fifteenth edition of eGRID. Please note: The EPA has recently changed the naming convention of eGRID. The current edition is named with a year corresponding to the year of the data (eGRID2020), while the publication year of the data is 2022. Those changes are reflected in the title above. For more information on eGRID please see the following EPA documentation: https://www.epa.gov/system/files/documents/2022-01/egrid2020_technical_guide.pdf. This layer is an update to the FGDL layer EPAEGRID_2019.