Actually, your reference [1] states the opposite: Florida's "annual electricity expenditures are 40% more than the U.S. average"... which is caused by air conditioning.
I think you meant to state that Florida's energy (not electricity) expenditures are amongst the lowest in the US.
Sorry, you're right: FL has low energy consumption but high electricity consumption. The point still stands though, it's still better for the environment to live in FL and use air-con than to live in the UK and heat your house through the winter.
I think you meant to state that Florida's energy (not electricity) expenditures are amongst the lowest in the US.