Historical GHG Emissions: Energy Supply Across All Regions

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Since pre-industrial times, emissions of greenhouse gasses, most notably CO2, CH4, and N2O, have increased due to human activities. Growing usage of coal, oil, and natural gas have caused an approximate 70% increase in global GHG emissions since 1970, with the largest contribution from CO2 (an 80% increase since 1970). Methane (CH4) and N2O emissions have increased roughly 40% and 50% respectively since 1970. CO2 and CH4 emissions increases stem mainly from the increased burning of fossil fuels, with the largest growth occurring within the power generation sector (145% increase since 1970 levels).

Emissions from global energy supply have increased significantly from 1970 levels. The largest emissions increases have been in Asia and OECD North America. Within Asia, China has emerged as the leading emitter of GHGs, with emissions increasing 120% during the 1990-2005 period.

Emissions from the E.U. nearly stabilized during this period (6.5% growth from 1970). Reductions in emissions in Germany, Sweden, and the U.K. were offset by increases in other EU-15 member countries during this time. Emissions in non-OECD Europe and the former Soviet Union decreased 38% in the period 1990-1999, but economic revival has increased emissions since this time. 

Other notable increases occurred in India and Brazil. GHG emissions in India grew 52% from 1994-2007. Energy supply contributes 58% of net emissions. Emissions in Brazil increased 68% during the period 1970-2005 due to growth in energy supply and transport sectors.