No, it just says we have to charge from renewable at least 75% of the time. Does not say we cannot charge from grid. But, we cannot export, technically that I have heard anyone making happen, yet
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Understanding PGE/SVCE electricity bills/TrueUP
- Thread starter SMAlset
- Start date
Yep, this is went I have quoted sending to Tesla, plus the stuff SGIP says is legal.
PGE forbids NOTHING! SGIP just says renewables at least 75% charge, so 25% charge can be from grid, SW or whatever.
Do you know anyone who has Grid exported in Calif? Seems other parts of the country may have? If so, I guess this would prove it is technically possible.
And since it is legal to grid charge up to 25%, and yep, I have seen it done, .....
Well @holeydonut said that he received a mailing from PG&E and Sunrun offering $100 to allow PG&E to control his Powerwalls and export to improve the grid reliability.
After I posted I thought about that. So, I guess technically, we cannot say it is impossible to send to grid
Now, as long as PGE uses the best case for solar, I guess it should not matter? Meaning, between shading and panel directions, I never will get output that is what my panel specs are? Its the winter where I would want to charge batteries from grid some.
I don't think anyone has the ability to just grid-charge and grid-export without some weird hack-y type of thing. wwhitney had a thread a while back where he was trying to create a fake load that was registered on a CT. So I guess he could have a CT on a LED light bulb that got magnified by some factor. Maybe that bulb takes a real 10 watts when it's on, but then the CT on that circuit reads 480x the real load. 480 x 10 watts would be a fake load of 20 amps. So this metered load would command the powerwalls to feed 20A extra thinking it was powering a home load, but it just ended up backfeeding the PoCo.
Seems clever... PG&E already thinks we're doing this and bypassing the control software and exporting power back to them during peak time anyway. We're effectively punishing ourselves by not grid-exporting from our batteries during peak.
The "feature" that allows the power company to take control of the battery for grid export during peak time seems better implemented in areas outside of California. So you are seeing more "virtual power plants" out there where people with batteries are grid-exporting at peak time in a manner that actually makes economic sense. The $100 spiff that PG&E is offering me is bogus.
Wait, so are you actually exceeding the estimate? Can you post a screenshot of your "Paired Storage: Maximum Export Estimation" from your DOB? Although in practice, it's possible to get close but in theory it should never actually happen and if it did by just a tiny bit unless your CSI EPBB estimate is in practice half of what you actually make.
Thanks for that. We have the same equipment. Will see what we come up with after adjusting for our roof location etc. We’re also split 13 and 11 panels on two roof sections.
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You have 345s? Did you go through someone other than Tesla for your install? Our Tesla install last fall used the 340/SC model (I have thought SC stood for Solar City — which version Hanwha does not list on their site BTW and think it’s manufactured solely for Tesla).
In case you missed in other threads. The reason I'm getting my export limited is PG&E has the wrong PV size for me. The likely source of the error was the fact that I had multiple PV systems. Most likely when Tesla installed Powerwalls 3 years ago they botched the application (one of the system was Solar City and other was not).
I was hoping to fix the problem with my 3rd PV system but Tesla submitted the wrong numbers (but to them right) and I signed off because they told them me that was the only way I would get my PTO and my newly assigned adviser was next to useless. The idiot I was dealing said Tesla didn't know about the other system. I was too frustrated at the time to remember that the plans that they submitted for the permit showed all the PV systems.
I've been reducing the issue by using balanced instead of cost savings which fortunately aligns more with my other goals anyway.
When I'm bored and have 4 hours to kill I might try calling PG&E solar support again.
I was hoping to fix the problem with my 3rd PV system but Tesla submitted the wrong numbers (but to them right) and I signed off because they told them me that was the only way I would get my PTO and my newly assigned adviser was next to useless. The idiot I was dealing said Tesla didn't know about the other system. I was too frustrated at the time to remember that the plans that they submitted for the permit showed all the PV systems.
I've been reducing the issue by using balanced instead of cost savings which fortunately aligns more with my other goals anyway.
When I'm bored and have 4 hours to kill I might try calling PG&E solar support again.
Just read a Teslarati article on VPP in Australia. Maybe PG&E is thinking of testing this out in sample areas? I’m guessing the installer would be the one to change the software to allow it with PG&E’s permission. So far we have not received any such letter.
Tesla Virtual Power Plant is providing energy security to Australian homes
A few years ago, Tesla teamed up with the Government of South Australia and various energy authorities to build South Australia’s Virtual Power Plant. Today, the Tesla-powered VPP seems to be providing substantial energy security to Australian homes. During the Q1 2021 earnings call, Elon Musk...
www.teslarati.com
Merrill
Merrill
Maybe someone can help me understand my NEM paired storage bill, I have talked to PG&E and read the above info trying to understand my bill. I produced 1042kWh of Solar last month, my Powerwalls used around 200kWh to recharge. So that would leave 842kWh of solar but I only get 457kWh generation credit. So what happens to the other 385kWh left over.
I would assume that your house used it? Power that was generated from solar either goes to Powerwall, grid, or house.
Merrill
Merrill
Yes, now that I see our usage was only 876kWh and we usually above 1100 I would assume that the 385 would be in addition to the 876.
Merrill
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The other issue I have that I’m trying to figure out is why my bill for April is $96 and using the same energy and having the same solar production as last April when my bill was $11. It does not look like the TOUC prices are that much higher than my E6 schedule that I was on before I installed Powerwalls. Plus I’m using the Powerwalls during the peak 4 to 9 so my bill has only off peak pricing.
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The TOU hours for E-6 last year were different. You would likely end up with more Peak credits on E-6 than TOU-C because you would normally use more of your Peak generation as consumption until 9pm. So, even if the prices for Peak and Off-Peak are nearly the same, the net quantities would be different with the same generation and usage profile. Of course, Powerwalls on TBC should skew this in your favor now.
Merrill
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None of this makes sense, I have been on the new TOUC since March and I have been running TBC to run the house at peak pricing. Previous to having the Powerwalls my true up for the year was around $500 and so far for March and April I’m already at $228.
Merrill
Merrill
Did they shift the dates for summer/winter this year from last year. I show that summer starts in June.
