Decarbonization means reconfiguring energy sources and technologies on the electric grid, in industrial processes, in buildings, and in the means of transportation, to be obtained from sources and processes that emit less carbon. The two largest sources of greenhouse gases are electric power generation and transportation. Globally electricity is just one third of total energy use. In the US it is close to half. Agriculture, industry, and non-electric heating and cooking are other big ones. Buildings are big energy consumers, often over-consumers due to inefficient weatherizing, heating and cooling design, and age. Retrofitting buildings and fitting new builds towards efficiency and cleaner energy offers many decarbonization opportunities that are marginally economic. Replacing industrial heating processes that usually require fossil fuels with lower carbon fuels or with electrification also offer decarbonization opportunities, but the cleanest processes are not yet technically feasible nor economic.

1. Climate Change Effects; Carbon Emission Sources; Decarbonization Solutions
Edited by Alex G. Lee (https://www.linkedin.com/in/alexgeunholee/)
Source. https://www.metoffice.gov.uk/weather/climate-change/effects-of-climate-
change; https://www.cdc.gov/climateandhealth/effects/default.htm
Source. https://drawdown.org/drawdown-review