I am not happy with myself for letting this blog wither. So I want to go back to my original assumption that the solar panels would pay for themselves in 6+ years. I have been taking a credit of $1,666.69 cents for the energy I'm saving each year (I could write a volume on how I came up with this figure). I am also deducting the SREC's I receive each quarter. I generate 8 per year, usually 1 in Q1 and Q4 and 3 in Q2 and Q3. The SREC's are paid out with a 6-month delay. The solar installation became cash positive in November of 2017 which is about 6 years and 4 months - so right on schedule. (I don't deduct the electrical bill savings until December...)
If I could have done it again, I'd have gotten a larger installation! So I've generated nearly 60MWh of electricity at this point. I'd like to point at that I do not have micro inverters and I do have a shading issue with my neighbors trees. They keep infringing more and more every year.

So, one thing I didn't anticipate is a second electric car.
So here's some data:
year |
cost/year (cents) |
avg. cost/kWh |
kWh used/year |
comments |
2006 | $2,326.27 | 18.75 | 11431 | |
2007 | $2,545.94 | 18.20 | 14022 | |
2008 | $2,101.25 | 19.19 | 10853 | |
2009 | $2,115.46 | 19.05 | 11331 | |
2010 | $1,796.56 | 16.61 | 10818 | |
2011 | $1,430.24 | 16.61 | 8637 | Solar installed in July |
2012 | $510.41 | 16.91 | 3489 | |
2013 | $1,498.40 | 16.69 | 9066 | 1st EV received in January |
2014 | $1,251.95 | 19.23 | 7068 | 2nd EV received in September |
2015 | $1,794.55 | 24.18 | 8523 | |
2016 | $2,025.27 | 23.80 | 8816 | |
2017 | $1,087.75 | 21.64 | 4672 | meter broken for 3+ months free electricity! |
2018 | $1,732.35 | 22.20 | 7430 | |
It is a lot of data. Notes: I wasn't always quick to move to a competitive electrical supplier. There have been improvements like moving from incandescent bulbs to CFL's to LED's. A very efficient A/C unit was installed in January of 2018...
So, the entire project has been a success...watch this space: