A new study lists and quantifies environmental sustainability factors and ranks energy sources under different scenarios for the following technologies: hydro, coal, oil, gas and nuclear. The results show that hydroelectric plants are usually the best solution. Coal and nuclear could be a good choice even if each type of plant has its strengths and weaknesses. On the contrary, the oil and gas-fired plants are always the worst choice.
The results show that, considering the traditional generation technologies, nuclear plants are usually the best option along with coal, even if this latter technology suffers from social acceptability in many countries.