[quote=svelte][quote=ocrenter]Just got through my first summer month under the SDGE TOU tariff structure along with solar production. ($.48/kWh peak, $.22/kWh off peak, $.17/kWh super off peak)
Total use of 1010 kWh.
Total production of 780 kWh.
530 kWh of the use coming from super off peak (300 kWh for 1300 miles on the EV, essentially fuel cost of $4 for 100 miles if not offset by peak hour production)..
Following TOU adjustments, at end of month: $60 credit
Solar with TOU plus EV is just absolutely amazing.[/quote]
There are some things in this post I’m not quite grasping.
How did you use 220 kwh more than you produced yet end up with a $60 credit?
Thanks[/quote]
Because of the TOU (time of use) price structure, the peak solar production time also happen to be the time of highest credit generation at $.48/kWh. Meanwhile, we were able to move half of our usage to the super off peak hours at $.17/kWh. Essentially 1 kWh generated in the afternoon can be traded for 3 kWh of use after midnight.
For example, on May 21 I had a horrible day of solar production. After subtracting daytime usage, I had a net peak hour generation of 8 kWh. At $.48 per kWh, that was $3.84 of credit. Meanwhile, the day before I drove almost 80 miles so my total off peak usage that day was 24 kWh. At $.17/kWh, my cost was $4.08. So on this day of poor production and excess driving, I was only on the hook for $.24 for the day.
