摘要:Emissions of greenhouse gases from electricity production should be reduced since climate change has became a big concern in developed countries. Carbon footprint is used as environmental index measuring the emissions that have effect on global warming and shows that secondary footprint has an important relevance in the final emission factor. To achieve sustainability in electricity production is required the consideration and evaluation of all relevant environ- mental impacts at the same time. Reduction in CO2 emissions is justified since clean combustion is achieved and global warming is the main contributor to global impacts.