Below is a listing of my electric bill for the last 15 months. The second column is the number of kWh's used in that month. To figure out price very quickly, the first 1000 kWh is ~$100, anything above that is $0.13/kWh.
This house (in Florida) was built in 1998 time frame and I swear, had zero upgrades in that time frame. Water heater and pool pump were original, AC was circa 2008. Single pane windows.
In the last 3 months, I have replaced the water heater with an on-demand one ($1500); replaced the pool pump with a variable speed version ($1000) and added Solar Panels ($24K). Even after all of this I couldn't get this bill down. I finally had the AC guys come back out and rip the system apart (it had been starting and stopping randomly, even when I turned it off; would have to pop the breaker to get it fully off); cost $410 for the fix.
Turns out, someone had by-passed all the wiring on the internal heater/defrosting coils and those were running 24/7 unless I popped the breaker, which was the big cause of my power consumption. Figure 24A @ 240V, per hour.
For my 16 days in May I had the meter going, I used 1075 wKh (net; received 89 back from my solar panels which went live on May 12th). I didn't get the AC heater fixed until around May 19th, so I'm anxious to see how the power generation will net out next month. Since I had the heater fixed, my generation back onto the grid has shot up based on what I've read on my new meter. As far as I've been able to tell, I'm consuming around 20 kWh a day now and putting somewhere between 45 and 70 kWh back on the grid; netting somewhere between 25 kWh or more as credits. Compare this to generating between 45 and 70 kWh and then pulling another 50 off the grid because of that stupid AC heater.
Another bonus to the fix is I've been able to raise the thermostat from 75 to 79 in the house as the heater is no longer burning 24/7 and fighting with the AC unit.
4/4/16 1,249 4/4/16 32
3/3/16 1,352 3/3/16 30
2/2/16 1,293 2/2/16 29
1/4/16 1,733 1/4/16 32
12/3/15 1,661 12/3/15 30
11/3/15 1,752 11/3/15 32
10/2/15 2,335 10/2/15 30
9/2/15 2,793 9/2/15 30
8/3/15 2,610 8/3/15 32
7/2/15 2,247 7/2/15 29
6/3/15 2,458 6/3/15 30
5/4/15 2,008 5/4/15 32
4/2/15 1,403 4/2/15 29
3/4/15 1,344 3/4/15 30
2/2/15 1,457 2/2/15 31
1/2/15 1,537 1/2/15 28
We still have the single pane windows to deal with; but we'll get there; most likely next year.