E-grid emissions: Here in the United States, all men may have been created equal — but all megawatt hours are not. Each of the 26 sub-regions within our country’s three power grids emits a different level of carbon dioxide — ranging from a high of more than 2,000 pounds per megawatt hour in Pennsylvania to a low of just over 819 pounds per megawatt hour in New York State. As a result, an electrical appliance or forklift operating at a facility in one area of the country is going to account for a considerably different level of greenhouse gas than that same appliance or forklift operating in another area.