HankLloydRight
No Roads
Now I’m thinking of adding four more panels on the small side roof sections for 30 panels total to absolutely maximize the solar potential.
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SGIP has incentives for renewable generation and energy storage systems. Fuel cells, bio-gas, wind turbines, and batteries are examples. Not solar, though, as far as I know. Feel free to google it, however be warned - the "handbook" for the program is over a hundred pages of jargon.Absolutely. Free (so referral, or equity and resilliency) makes a ton of sense. Does that plan also help with solar?
I agree, good explanation Brett!Great, thanks Brett for that explanation.
Here is a strange idea: What would happen if you don't take the income tax credit on the batteries...
Thanks. Just to confirm, it is technically possible to charge the powerwalls from the grid and/or solar as needed, say in other countries?
. One person here managed to get tesla to allow grid charging with solar by getting his utility to give him a letter on their on letterhead that it was specifically allowed.
It is going to be interesting to see if and how this might change over the next several years as more batteries are deployed, more people roll off the 5-year ITC lock on non-solar charging, and the ITC potentially goes away for new installs. I understand utilities are often opposed to it, but using batteries to provide additional time-shifting of loads makes a lot of sense for reducing peak demand and I could see states doing more to require utilities to incentivize customers to charge batteries overnight and then discharge them during (typically evening) peak times.Other countries do this, yes. It is certainly not a technical limitation, because we charge from the grid as well during tesla triggered stormwatch mode, so its not a "wiring" thing. Its a policy thing. One person here managed to get tesla to allow grid charging with solar by getting his utility to give him a letter on their on letterhead that it was specifically allowed.
I forget what state they were in, though. nevertheless, its really not done here whether you take the tax credit or not, and I would consider any request to charge from the grid at customer triggering (ie non stormwatch) pretty much a dead end if that person has solar / pv.
I'll definitely pursue the letter from the power company avenue. Thank you.
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It is going to be interesting to see if and how this might change over the next several years as more batteries are deployed, more people roll off the 5-year ITC lock on non-solar charging, and the ITC potentially goes away for new installs. I understand utilities are often opposed to it, but using batteries to provide additional time-shifting of loads makes a lot of sense for reducing peak demand and I could see states doing more to require utilities to incentivize customers to charge batteries overnight and then discharge them during (typically evening) peak times.
Here at my new house, I need to replace three aging thermostats. My elect utility has deeply discounted Nest E thermostats for $69/each (limit: 3). I ordered three. In addition, they offered an additional $25 off EACH unit (net cost $44/each) to join their power reduction plan during peak usage times, where they will announce and automatically turn down my thermostats to reduce the overall load on the grid. I can manually override this turn-down if I want to.
Given this (and other peak power reduction incentives) I can't see why they would be opposed to grid-charging batteries off-peak for on-peak usage.
Even if your utility is not concerned about the money side (assuming TOU rates, a utility obviously loses money with such a scheme) I'm guessing there is still a concern about control. I don't know if your utility is the one (or like the one) somebody else in CT mentioned that has the program to discharge batteries during peak times to manage the load, but that program seems to be a very defined one in that it happens automatically based on specific criteria.Here at my new house, I need to replace three aging thermostats. My elect utility has deeply discounted Nest E thermostats for $69/each (limit: 3). I ordered three. In addition, they offered an additional $25 off EACH unit (net cost $44/each) to join their power reduction plan during peak usage times, where they will announce and automatically turn down my thermostats to reduce the overall load on the grid. I can manually override this turn-down if I want to.
Given this (and other peak power reduction incentives) I can't see why they would be opposed to grid-charging batteries off-peak for on-peak usage.
he load shifting, but what likely does not make sense to them is everyone saying to them (utility) "hey utility, I want to buy this widget from you at 10 cents in the middle of the night, hold onto it for 15 hours, then sell this same widget back to you for 40 cents at 4pm, and I want to buy the widgets in bulk. You are ok with that, right?"
I get the load shifting, but what likely does not make sense to them is everyone saying to them (utility) "hey utility, I want to buy this widget from you at 10 cents in the middle of the night, hold onto it for 15 hours, then sell this same widget back to you for 40 cents at 4pm, and I want to buy the widgets in bulk. You are ok with that, right?"
In effect, people wanting to charge the powerwall from the grid during a cheap / off peak rate, then either discharge the powerwall into the utility at peak rates (effectively selling it to the utility for more than they bought it) or selling their solar power to the utility at peak rates while they use the cheap power "they bought from the utility", doesnt make much sense financially.
The utilities want to encourage self consumption, not encourage people to become mini utilities and try to actually make money off selling their power. Thus the "store your OWN power and self consume it during peak rates, dont try to sell it to me at peak rates", dance of the utilities changing peak times from 12-8 in california (prime solar generation time) to 4-9 or 5-8 (when they can assure themselves that solar generation is winding down).
Its going to be interesting to see how this shakes out, for sure, but it doesnt make sense for any business to sell you something for a dime, then buy it back from you for 20 cents to 50 cents (depending on utility) basically the same day and perform those transactions in bulk, losing 10 cents to 40 cents on each widget (kWh).
I see your point, but it's not selling it back to them at the peak rates for significanly more than what I paid for it. It's only denying the utility the delta between the on-peak and off-peak rates. They're doing everything they can do get people to use less peak power. I don't see this as any different.
Also, here in CT when I sold my last house with solar, I ended up with a small net credit of kWh from net-metering. The regular residential rate for power at that time was $0.19/kWh. They 'bought back' that net metering credit at $0.03/kWh to close out my account. This is a regulated rate by ISO New England (oversees/regulates all New England utilities).