I'm building an open source climate accounting application, and I'm looking for emissions factors of electricity generation for the same country from two different data sets. There is data from both the UK government (2020) and the EPA (2020), but the two don't agree:
According to the top half, which is eGRID data, the US generated 4,021,549,453 MWH of electricity which produced 1,654,106,291 tons of CO2e emissions, so the emissions factor should be about 0.41.
According to the bottom half, though, the UK government data shows 0.06644 for generation and 0.00434 for transmission and distribution of US electricy. So the total is only 0.07078.
Why such a big difference?