Lately, I've heard that it's a way to save energy by reduced use of electricity. (mixedgreensblog.com)
This collaboration is critical in the development of standards that will lead to the widespread use of electricity as a transportation fuel. (greencarcongress.com)
The same applies to household use of electricity and gas: suppliers will have to buy the permits, and pass the additional cost on to consumers. (theconversation.com)