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Discussion: Powerwall 3 [Speculation / Discussion etc]
- Thread starter n.one.one
- Start date
A solar inverter is a solar inverter. It doesnāt matter what brand of panels you have. I will connect my panels to the PW3 and it will work.
Thats not what Tesla says, but you see that from what I quoted from them already, so its fairly obvious that doesnt matter to you.
I wonder if this is true for older positive ground Sunpower panels. Will the MCI and Tesla inverter play nice with the old tech?
RKCRLR
Active Member
This statement is interesting for California residents:
"Iām a California resident. Will switching my home battery to Powerwall 3 mean I lose my NEM 2.0 status?
Yes. Californian utilities administering NEM 2.0 have indicated that any change to the currently approved system design, following April 14, 2023, would mean that interconnection applications are no longer valid. If you are changing to Powerwall 3, you will need to enroll in the new Net Billing Tariff."
"Iām a California resident. Will switching my home battery to Powerwall 3 mean I lose my NEM 2.0 status?
Yes. Californian utilities administering NEM 2.0 have indicated that any change to the currently approved system design, following April 14, 2023, would mean that interconnection applications are no longer valid. If you are changing to Powerwall 3, you will need to enroll in the new Net Billing Tariff."
I believe that's only correct if the PW3 installation is in the context of expanding a PV system in excess of the greater of 1 kW or 10%. But if you had an existing PV system and you decided to just replace that inverter with a PW3 without adding panels, then that change wouldn't trigger loss of NEM 1.0 or NEM 2.0 status.
RKCRLR
Active Member
I suspect the statement is for people that made it in under the wire with NEM2 applications but haven't had their system installed yet.
willow_hiller
Well-Known Member
A lot of new (and/or additionally confirmed) details in this video:
- Supports up to 20 kW of nameplate solar
- DC coupled
- Can be installed without Gateway or Smart Meter for self-consumption, or either can be added later for backup capability
- Confirmed LFP, which should make installation easier where there are strict building codes
- PW2 will continue to be produced for retrofits
jgleigh
Member
It also matters if you have microinverters, as opposed to a string inverter. Sure, one could re-wire existing panels to bypass the micro-inverters - but no installer would touch an existing PV system in that way, neither Tesla nor third-party installers.
Why not? Original S/X charged at 80A, that's 19kW.
Depending on setup, a bunch goes to the batteries. Grid charging is only 5kW (single PW), but the cells may allow more, plus they mention expansion packs.
With an 11.4 kW inverter and Tesla max of about 1.7 DC/AC ratio this works out to be right at 11.4 kW PV inverter.
This seems typical of Tesla, they might use less inverter than other installers and accept the clipping.
Dee_M3
Member
So no PW3 for me since my fairly new solar install with Enphase microinverters will not be compatible? And I held off getting battery storage waiting for the PW3. Bummer.
Jeremy3292
Active Member
Update: Earlier date of 10/9 opened up and I snagged it. Have also inquired about PW3 with my advisor; will report back.
Jeremy3292
Active Member
willow_hiller
Well-Known Member
I guess it depends on how the internal power electronics are configured. It may just mean that it's DC coupled to the solar, but still capable of rectifying grid AC. Or it could mean that energy only ever enters the pack in DC, and only ever leaves the pack in AC.
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