Electric bill went up 78%...

Our utility has a split fuel charge where anything up to a certain point is billed at a lower rate, but once you go over that point it's billed at a much higher rate. Too many KWh over and it's a very noticeable increase.

My bill used to run 130-150.

I installed a programmable T stat about 7 years ago, and it's rarely over $100 anymore.

A "logical" program makes all the difference.