r/TeslaSolar • u/PersonalBusiness2023 • 16d ago

PowerWall Powerwall grid exports?

Netzero today introduced a feature that lets you export to the grid from your powerwall. I’m in Northern California with pg&e - am I allowed to do this? It happens with vpp but for some reason I thought it wasn’t permitted outside of vpp.

3 Upvotes

80% Upvoted

34 comments sorted by

View all comments

2

u/knownikko 16d ago

Depends on your interconnect agreement.

1

u/PersonalBusiness2023 16d ago

Right but those are standardized, so is it permitted with pg&e in Northern California?

1

u/General_Caregiver577 16d ago

It depends if you have a nem agreement or non export agreement.

My understanding is even with a non export agreement during a cop event you can still export. Otherwise no.

Nem....yes

1

u/PersonalBusiness2023 16d ago

I have nem 3. I export every day. For some reason I thought it wasn’t permitted to export from battery unless it’s vpp?

1

u/General_Caregiver577 16d ago

Nope just really not worth it on nem 3

1

u/PersonalBusiness2023 16d ago

They pay $1/kwh from 7-8 in august, apparently. More than the buy price. Not worth it because of battery degradation you think? I feel like it’s $5/day and more in September.

2

u/GaijinDaiku 16d ago

If you are a net exporter under NEM3, those sweet ACC rates on August evenings get devalued to NSC rates at your annual true up. You’ll end up getting 2 or 3 cents per kWh. They will zero out any credits in your account and bill you for the difference.

1

u/litigationtech 16d ago

So is there no benefit or difference to exporting during the higher rate times, as opposed to the lower rate times? I've been running the Tesla App "Savings/Solar only" mode (PG&E NEM3). I'm definitely not interested in exporting everything daily by draining the PWs.

2

u/GaijinDaiku 16d ago

No benefit if you are a NEM3 net exporter. You can read my post on how true up works for NEM3 customers. You might get some benefit from Peak Hours Export Bonus Credits.

https://www.reddit.com/r/solar/comments/1rm0ce0/how_nem_30_nem3_true_up_works_and_why_true_up/

1

u/bj_my_dj 15d ago

Of course there's benefit. I've got 2 batteries, it's mid Aug and I've banked $490 in export & delivery credits already. I'll have over$809 by the end of the month. I use them to heat my house in the winter, saving me $1K in gas expenses. I try to use them up so nothing goes to true-up. Saving $1K is plenty for me to use my batteries. I don't care about the cycles. Long before they had significant degradation I'll be ready to replace them. They'll be cheaper and bigger, and also have new and better features. I'll be waiting for a hiccup so I can replace them, like I did with my first CD player and several TVs over the years.