Perhaps it'd be more accurate to say "X BTUs of energy". BTU is the American unit of energy after all. And then say that "50 railroad cars of coal" is equivale

Perhaps it'd be more accurate to say "X BTUs of energy". BTU is the American unit of energy after all. And then say that "50 railroad cars of coal" is equivalent to X BTUs. I'm being pedantic. I think its well known that the US Grid is a complex mix of solar, nuclear, wind, and fossil fuels. It is also known that its mostly fossil fuels (natural gas, coal, and petrol), despite our best efforts to the contrary. So I think the visualization is pretty good. But a few additional words for clarity here would probably be better?