Version 3.0 – Released July 2, 2012
A CARMA technical paper published by the Center for Global development provides full details of the CARMA v3.0 methodology. Users are also encouraged to consult the v3.0 Technical Notes document for guidance about using and interpreting the data. A “Known Issues” blog post keeps track of known problems with the data.
Version 2.0 – Released August 27, 2008
Underlying plant and company data reflect the state of the global power sector as of early 2008 (53,980 total existing and planned plants). Data from the EPA Clean Air Markets division now supplements data from the EPA eGRID program. New emissions and power data disclosed by the Indian Power Ministry incorporated for year 2007. Small number of additional plant matches made with disclosed European Environment Agency data. Changes made to the CARMA estimation model to better predict power and emissions for plants where multiple fuel types are employed. Fixed error that was causing overestimation of capacity utilization in China. Plant geographic coordinates in United States updated to reflect EPA Clean Air Markets division data when possible. Estimated latitude and longitude extended to a total of 36,380 plants. City radial data extended to a total of 208,569 cities, of which 98,327 are in the United States. Eliminated “parent” and “operator” distinction for companies as it was causing confusion for some users.
The data files for Version 2.0 can be found here. These files are for reference; analysis should be based on the latest data.
Version 1.0 – Released November 15, 2007
The data files for Version 1.0 can be found here. These files are for reference; analysis should be based on the latest data.