Nem 2.0 solar with powershare

[youngsta805]

Hi, does anyone in California know if the power share will affect if you’re on the NEM 2.0 Solar? I currently cannot add back up battery because it will push me from any nem 2.0 to 3.0. Wondering if it’s the same thing for the cyber truck.

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[LuvOrH8]

Tesla Powerwall will not cause or force you to go from Nem 2.0 to 3.0. I am in the process of adding both powerwall and Cybertruck PowerShare to my Tesla Solar on NEM 2.0 and Tesla confirmed to me neither will cause me to go to NEM 3.0 and I will still be on 2.0. Adding Solar would cause you to go from 2.0 to 3.0. Again this is all according to Tesla.

 

[flyinglow]

NEM3, as you are aware, screws solar owners by reducing what we are paid/credited for our solar production. At the moment, from what PG&E recently told me, those on NEM3 are still being credited at NEM2 rates because NEM3 details haven't been finalized.

This article states that "Solar owners that are grandfathered into NEM 2.0 will be able to add battery storage later and remain on NEM 2.0". At this point, I haven't been able to verify that.

https://www.solar.com/learn/nem-3-0-proposal-and-impacts-for-california-homeowners/

When we purchase a CT or other EV pickup, we are basically getting a big battery at a much lower cost per kWh than if we purchased home batteries. If the article is correct and we can stay on NEM2, we are golden - exporting the CT's battery power during peak and partial peak (EV rates include partial peak times 3-4 PM and 9 PM to 12 AM) will, at current PG&E EV2 rates, create up to around $5,600 in credit (assumes we export for 8 hours a day/365 days a year). If the credits mean we have a true-up bill that is in our favor, the utility is required to cut us a check.

If we can not stay on NEM2 and bi-directionally charge, NEM3 is supposed to further expand the gap between peak and off-peak rates (with PG&E's EV rates, it is currently at about 30 cents). This could actually make it worthwhile switching to NEM3 if we have a pickup's big battery.

Until we know the final NEM3 rates, though, it is a guessing game. This has to make it very difficult for solar companies to sell systems since they cannot accurately explain or quantify the savings of solar and batteries. I used to sell solar/design systems and this lack of certainty would freak me out. I know it has put a lot of solar people out of work and installers out of business.

FYI, on another forum I have had an electrical engineer tell me (if I understood him correctly) that the utility will, under NEM3, control when and how much battery power is exported to the grid. I find that hard to believe as it would make predicting the value of a battery installation impossible - even if it were technically feasible. No one in their right mind would purchase a battery system under those unpredictable financial conditions. Even if you were primarily purchasing for home backup power and not intending to sell power to the grid, you wouldn't know if your battery was going to be at a full state of charge when you needed it.

I know this doesn't actually answer your question but, at this point, I am not sure anyone can answer it with certainty. I want to be able to make money off bi-directional charging to partially offset the high cost of an EV pickup myself. If I find out more, I will post here.

 

[DJAlan2000]

Just adding battery to your system should NOT put you onto NEM 3.0... HOWEVER, the installer needs to make sure to set it up so you CANNOT charge the batteries from the utility company... In other words, your batteries will ONLY be allowed to charge from your solar system.

Also, if you add ANY MORE solar, then you will be switched to 3.0 (which sucks!)...

One thing I have also noted with mine (10.8 kWh with 2 PowerWall 3's) is that SCE (my utility) does NOT 'buy' any power from me during 'peak' (4-9pm) hours... Usually it starts around 9-10am and 'sells' or 'exports' to SCE until 4pm... All at lower rates of course and then it stops selling to them...

I wish it would do the opposite... sell to them at PEAK and allow us to charge our vehicles (well, the CT anyway - I drive my Y to work in the daytime) on solar instead of selling it to them cheap and then we have to use their power to charge back up (at night when rates are also cheap).

There's also a limit to how much you are allowed to sell them (I think ours is 22.5 kWh as I recall) per day... But in any case, we're still banking credits with them...

Your paperwork for NEM 2.0 should tell you...

If anyone knows any way to control the PWs better, like setting them to export from 4-9pm, I would love to know how...

 

[Treesneezer]

NEM3, as you are aware, screws solar owners by reducing what we are paid/credited for our solar production. At the moment, from what PG&E recently told me, those on NEM3 are still being credited at NEM2 rates because NEM3 details haven't been finalized.

This article states that "Solar owners that are grandfathered into NEM 2.0 will be able to add battery storage later and remain on NEM 2.0". At this point, I haven't been able to verify that.

https://www.solar.com/learn/nem-3-0-proposal-and-impacts-for-california-homeowners/

When we purchase a CT or other EV pickup, we are basically getting a big battery at a much lower cost per kWh than if we purchased home batteries. If the article is correct and we can stay on NEM2, we are golden - exporting the CT's battery power during peak and partial peak (EV rates include partial peak times 3-4 PM and 9 PM to 12 AM) will, at current PG&E EV2 rates, create up to around $5,600 in credit (assumes we export for 8 hours a day/365 days a year). If the credits mean we have a true-up bill that is in our favor, the utility is required to cut us a check.

If we can not stay on NEM2 and bi-directionally charge, NEM3 is supposed to further expand the gap between peak and off-peak rates (with PG&E's EV rates, it is currently at about 30 cents). This could actually make it worthwhile switching to NEM3 if we have a pickup's big battery.

Until we know the final NEM3 rates, though, it is a guessing game. This has to make it very difficult for solar companies to sell systems since they cannot accurately explain or quantify the savings of solar and batteries. I used to sell solar/design systems and this lack of certainty would freak me out. I know it has put a lot of solar people out of work and installers out of business.

FYI, on another forum I have had an electrical engineer tell me (if I understood him correctly) that the utility will, under NEM3, control when and how much battery power is exported to the grid. I find that hard to believe as it would make predicting the value of a battery installation impossible - even if it were technically feasible. No one in their right mind would purchase a battery system under those unpredictable financial conditions. Even if you were primarily purchasing for home backup power and not intending to sell power to the grid, you wouldn't know if your battery was going to be at a full state of charge when you needed it.

I know this doesn't actually answer your question but, at this point, I am not sure anyone can answer it with certainty. I want to be able to make money off bi-directional charging to partially offset the high cost of an EV pickup myself. If I find out more, I will post here.

Have you put the speculation into action? What are the results?
I'm also on NEM 2.0 and I am intrigued about bi-directional power selling to PGE

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