Thanks. I have to admit, I haven't looked into the ITC at all. I'll do that.
PG&E will be ~$1000 poorer because currently they take that excess generation and sell it to the neighbors at peak rates. Granted, their rate plans may be different so the numbers don't necessarily line up exactly that way. But the point is that they're selling my excess generation during peak hours and aren't paying (me or anyone) for it.
I am not sure what $1,000 dollar credit you are referring to, this I am assuming was an early adopter incentive for converting to solar and is no longer part of any current PG&E offer. Also, when you say you are a consumer of 1+MWh over the course of a true up cycle, does that mean that after your production for a year, you consume an additional >1 MWh from the grid? Am I correct to assume that your solar system does not produce an equal or greater amount of MWh that you use in a calendar year? If you get a lot of power outages, I can see the argument to do the Powerwalls. I am not understanding how you could ever shift enough energy usage to pay for them. You did state above it is mainly for power outages, I can't remember the last time we had one that was not scheduled for some kind of work being done and was not even 30 min long. If someone wants to be green, more power to them. However, I was only stating that if your system produces an equal amount or greater MWh's in a calendar year, having Powerwalls does not make any financial sense with Net Metering. I am only 4 months into fully understanding this stuff after doing a self install of my system, but am always open to learning.
The $1000 is the amount of surplus revenue that is "owed" to me at my true-up, despite consuming an additional > 1MWh from the grid. That's because, as @Ampster duly noted, I sell at well over $0.40/kWh and buy at $0.11/kWh. TOU is the differentiator, and I'm not sure you're accounting for that in your statements.
PG&E states they buy surplus energy at $.035/kWh, how are you selling at well over $0.40/kWh?
Rate plans matter. EV plan currently pays $0.44976/kWh during the summer peak.
Here's my explanation of the situation (I work for the utility in San Diego)...
I am on SCE TOU-D-A and I believe all NEM customers are treated the same. The rates may be slightly different between utilities and there is a difference between early adoptors (NEM 1.0) and more recent adoptors (NEM 2.0)
Are you grandfathered in to an older agreement? I can not find anywhere in my NEM Agreement, nor on the PG&E website that states if you under produce for a calendar year that you will be paid the retail rate for any excess production during summer months. I definitely will not under produce for the year now, however, that can change once I get the Model 3, however, I have free charging at work, so I am hoping to add very little to my yearly usage. I am on TOU-A and not yet on the EV-TOU, as I am still waiting on Model 3 to be available. Is there a difference in in what you get paid for overproduction on the EV-TOU? Awesome if you get it, which it sounds like you do. Just trying to figure out if there is a way to get paid retail rate for any excess as well. Jealous of your profile picture too.
Net Surplus Compensation (NSC) is based on your 12-month true-up and only applies to excess generation over that period. In my case, as I mentioned above, I am a net consumer from the grid, but a net exporter of more valuable "peak" energy. Therefore, I run a dollar credit on my true-up, but do not receive anything in return since there is no net surplus.
The difference between TOU-D-A and EV-TOU (TOU-TEV) is for solar customers we get a higher rate for what we generate. Last time I looked we paid $0.01/kWhr more for super off peak and for me That was not enough savings to give up the higher rate.
It looks like you don't understand the fundamentals yet. Net Metering is exactly that - the number of kWh you have consumed during each time period is totaled up and multiplied by the $/kWh rate for that period. It doesn't matter if the total kWh is positive or negative. Everything it totaled up to dollars for each billing period. The dollars are totaled up for the year. If your total dollars are positive, they go month by month and deduct any amount you have already paid in Minimum Charges on your normal bill. Then they will add your remaining True-Up energy charges to your normal bill. If your total True-Up dollars are negative for the year, but your kWh were positive for the year, the dollar credit balance is wiped out. If your dollars and kWh are both negative, then they take the negative kWh and multiply by ~$0.035/kWh and pay out your Net Surplus Compensation.
I got you now, thanks for the explanation, just making sure I was not missing out on something.
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