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Primary CO2 emissions reduction potential by technology in the Reference Case and REmap, 2015-2050

Renewables would account for half of total emissions reductions in 2050, with another 45% coming from increased energy efficiency and electrification
CO2 emissions include energy-related emissions (fossil fuel, waste, gas flaring) and process emissions from industry. If only fossil fuel emissions were displayed in this figure, CO2 emissions in 2050 would be at 42 Gt and 10 Gt per year in the Reference Case and REmap, respectively.
Source: IRENA, 2017, Perspectives for the energy transition: Investment needs for a low-carbon energy system (full report)