My Gas And Electric Bills Seemingly Mirror Each Other

Just paid my electric and gas bills now online.  As I think I've said here before, my gas bill is mortifyingly high.  But, my electric bill is manageable.  And I know it's the exact opposite come the summer -- my electric bill is gargantuan but my gas bill is tame.  I don't think I get why those two bills are ships passing in the night, but I just came up with a possible explanation: My house uses natural gas to heat itself, but electricity to operate the central air conditioning.  Makes sense, right?

Anyway, off to bed.