I do not yet have my solar panels installed; in fact, I still haven't accepted the design. Based on my usage, which is currently about 9,500 kWh per my last 12 months, Tesla recommended a medium size system with 24 panels. In my configuration this design has an estimated annual production of 12,243 kWh, which is about 129% of our usage.
I read somewhere that PG&E's Net Energy Metering program requires that you don't size your system more than 5-10% over your usage. I looked into this a bit more last night and found their NEM2 Agreement and Customer Authorization form. According to Part II of their agreement, "NEM2 systems should be sized with an estimated annual production no larger than 110% of the Customer’s total previous 12 months of usage (annual usage) and projected future increase." Given this, I have some questions:
1) Tesla's recommended system sizes seem like they will always be oversized, and in some cases significantly. Doesn't this mean that a good portion of their PG&E customers will be violating the NEM2 guidelines?
2) What happens if your production is greater than 110% of your usage? What are the consequences of violating their NEM2 guidelines?
3) While the panels will generate more than 110% of my usage initially, as they degrade over time, they will eventually be producing less than 110%. Does PG&E take that into consideration at all?
Thanks.
I read somewhere that PG&E's Net Energy Metering program requires that you don't size your system more than 5-10% over your usage. I looked into this a bit more last night and found their NEM2 Agreement and Customer Authorization form. According to Part II of their agreement, "NEM2 systems should be sized with an estimated annual production no larger than 110% of the Customer’s total previous 12 months of usage (annual usage) and projected future increase." Given this, I have some questions:
1) Tesla's recommended system sizes seem like they will always be oversized, and in some cases significantly. Doesn't this mean that a good portion of their PG&E customers will be violating the NEM2 guidelines?
2) What happens if your production is greater than 110% of your usage? What are the consequences of violating their NEM2 guidelines?
3) While the panels will generate more than 110% of my usage initially, as they degrade over time, they will eventually be producing less than 110%. Does PG&E take that into consideration at all?
Thanks.