In the fall, I had a power bill that showed KWH usage about 50-60% less than normal (with no change in our usage patterns), so I called the power company and they said it was probably a meter mis-read and to expect the next bill to be higher to balance it out. The next bill was higher (about 50% more KWH than expected), so I thought that would be the end of it. However, the bill after that was also at that level. I called and asked the power company to check the meter, which they said was working properly. I checked the major appliances with a Kill-a-Watt to see if they were consuming energy outside the expected ranges; they weren't. I also shut off all the breakers to see if the meter still ran with no power being consumed by the house; it didn't. I just got my latest power bill, and KWH usage is still way up, with no real change in our household usage patterns (and, with winter rates in effect, these are pretty expensive bills). Any suggestions as to troubleshooting I can do to to try to see what's drawing extra power? Thoughts as to whether it would be worth paying an electrician to diagnose the problem? Thanks very much!