What is new in eGRID?
(October 16, 2008) eGRID2007 contains several new fields of information and several methodological improvements. Please see the Technical Support Document (PDF) (100 pp., 0.99MB, About PDF) for more details. The following are new data elements in the current edition: • Emissions and emission rates for two additional Greenhouse Gases (GHGs), namely methane (CH4) and nitrous oxide (N2O), are included beginning at the plant level. • Four new resource mix variables, combustion and noncombustion generation in terms of MWh and percent, are included beginning at the plant level. • Seven new combustion output emission rates — for ozone season NOx and annual NOx, SO2, CO2, CH4, N2O, and Hg — are included beginning at the plant level. • New plant level flags indicate whether the plant burns any amount of coal, whether the plant combusts fuel, and whether the latitude and longitude values are based on the county centroid. The following are methodological changes new to this edition of eGRID: • A
