By buying a ENERGY STAR certified electronic equipment, one can save a lot on electricity bills. EPA released an info graphic on the burning issue of Global warming by CO2 emission and human contribution in it. Human activities like electricity production, transportation etc are contributing to Co2 and it is increasing the effects on Global warming.
Also, they have suggested some ways to save energy in households so that less Co2 emissions can be made. Look at the info graphic:
Give it a thought when buying electronics like 110 Volts Refrigerators, 220 Volts Cooking Range & Cook Tops etc. One can join Samstores to spread the cause.