Last December, we used 1094 KWH and this December we used 861 KWH. That's a 22% savings over last year. Our house uses forced air heat with a pretty inefficient furnace (we'll upgrade that when we can). Our gas use—minus cooking and hot water—went from 237cf to 203cf—a 14% savings—mostly due to careful use of both the thermostat and the pellet stove. We used about ten bags of pellets at $4.50 per bag, so we saved a little bit of money there.
Electric prices in the Philaelphia area are expected to rise about 20% next year so these savings will become more important. The PV panels were activated in January - so stay tuned. Our water bills, thanks to energy star washer and dishwasher and a dual flush toilet is consistently about half or less of the national average which saves us about 600 dollars per year. One day we'll have a large rain water cistern to bring that number down further. Stay tuned for pictures of the 2.8 KW array!