While national carbon dioxide emissions are regularly published for most countries, data specific to individual sectors, companies, geographic regions, or facilities are more difficult to obtain – if available at all. This is unfortunate, because disaggregated data are especially useful to educators, policymakers, academics, investors, and environmental activists in need
of information about the carbon footprint of particular entities. Aggregate totals reveal general trends, but disaggregated data facilitate specific actions. Power generation suits the development of detailed data, because it relies heavily on stationary point sources for which information is more likely to be available. The power sector is also a major contributor to global climate change, producing 40% of energy-related CO2 emissions worldwide (IEA 2011).