In January we will have had solar panels for one year. In this article I will tell you what I learned and update it as the year closes.
The first lesson to learn is that there are two buckets APS uses, peak and non-peak. Any electricity generated in one bucket does not get transferred to the other.
The second lesson is that I misunderstood the APS bill. I thought I was going to generate way more than I needed in the peak bucket. To counterbalance this, I did the opposite of super-cooling once we started using our A/C in the spring. On Jul 23, I talked to APS and corrected my misunderstanding. This is why you see an increase of my bill starting in July.
I expect that next year will see a rise in the summer, but not nearly enough.
This graph makes sense if it is showing all the electricity I used, whether from the panels or from APS. If it does not, it seems that Sep is pretty high.
I pay about $200 to lease the solar panels. In 2014, paid an average of $260 a month for electricity. I hope to at least break even, we will see.
Here is a spreadsheet where I have been keeping track of stats and conclusions based on data.