Comparisons of life-cycle greenhouse gas emissions or global warming potential attempt to calculate the global warming potential of electrical energy sources by doing a life cycle assessment of each energy source and presenting the findings of the assessment in units of global warming potential per unit of electrical energy generated by that source; which uses the global warming potential unit, the Carbon dioxide equivalent(CO2 In 2014, the IPCC harmonized the Carbon dioxide equivalent(CO2 It is important to note that for all technologies, advances in efficiency and therefore reductions in CO2