Tesla Powerwall 3 Home Battery Review
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- Опубликовано: 5 май 2024
- This video goes deep into detail about the all new Tesla Powerwall 3 home battery, the Tesla Backup Gateway 3, and the Tesla Backup Switch.
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The "dude trust me it is LFP" IS strange. One can speculate that they want the freedom to use different batteries based on what is available and cost-effective and that they have designed the electronics to be flexible and to work with a few different options. LFP is a selling point in itself, but one can speculate that they don't want to hint that their previous house batteries are bad or unsafe. And they don't seem to be. The news would be full of it if Tesla Powerwalls were exploding in people's houses. Anyway, I trust the "dude" here. Seems to know his stuff, and has a good beard. All good. 😁
I agree, sometimes I think the "thermal runaway" issue is just a sales tactic from other manufacturers pushing LFP. I never really hear of Lithium Ion batteries catching on fire, and if they were really that dangerous, they would be recalled or not allowed to be used in EVs and in people's homes. They have all passed very stringent 9540A testing requirements to get through International Fire Codes. That being said, the additional cycles and lower rate of degradation out of LFP is the selling point for me personally. It is very strange that the battery chemistry is not shown on the datasheet though. Not really sure what to think about that to be honest.
This is a great video!
Thanks for putting this information out.
I am ready to install solar and having well presented information like this is so helpful!
Glad to hear it. Thanks for watching the channel!
This is by a huge margin, the best explanation I have seen on how Powerwalls, and in particular, the powerwall 3 works. I can't tell you how many 20 minute videos on RUclips I've come across that tell me nothing more than the bold text on the Tesla website - which only takes 5 minutes to read. I really hope my installer is as well informed as you. On my next phone call, I'll now have lots of intelligent questions for him. FYI - installing Solar in CA is just plain awful. Powewalls need to be spaced 3 feet from any door or window, 3 feet from a gas line, and here's the killer - 3 feet from each other. You need a pretty big, windowless house to install more than one or two Powerwalls. The utility only buys back at 7 cents per kwh. But charges 60 cents peak, and 24 cents off peak. You basically need to be 100% grid independent.
Yes, the International Fire Codes can be a pain in the butt to abide by, and some homes just flat out aren't eligible for a battery when the AHJs don't allow any wiggle room. LA County is about the worst when it comes to that. They are one of a few AHJs out in CA that do not recognize the UL9540A testing that allows these batteries to be stacked closer than 3 feet apart even though the battery manufacturers have shown it is perfectly safe to do so. Unfortunately if you live in one of those areas, you drew the short stick. Thanks so much for the kind words!
well done, I've heard many of the new solar panels have the ability to get shaded and not hurt the rest of the string, even without optimizers or inverters.
Yes, solar panels have come a long way over the years. Depending on the bussing inside the solar panels and the orientation of the panels, shading may or may not be a big issue. Most solar panels have bypass diodes to mitigate shading issues, but in general, if you have lots of shading issues, some good ole microinverters or optimizers are difficult to beat. Thanks for watching!
Can the pw3 be an off grid system?
Great question. As far as I am aware, they don't support off grid applications. I think it would likely void the warranty if the system was not connected to the grid and internet.
Great video. I’m still a bit frustrated with all generations of Powerwalls. They are far too expensive for most homeowners. I was recently quoted a price of $1,000 or so per kWh installed. To go off grid, keep power through the winter, and top off an EV at night, the average homeowner will need at least 50 kWh of storage? To actually disrupt the electric utility cartels, battery storage will need to drop by about 80%.
Typo fix. Battery storage costs will need to drop by 80%.
Batteries are certainly the most expensive part of an solar energy storage system. They have come a long way in the last 10 years and the industry is constantly innovating while prices continue to drop. But yes, the average American home is thirsty for energy and replacing the grid entirely is not an easy feat. Thanks for watching!
I think the solution is to store as much energy as possible as heat (and cool, and even gravity) rather than electricity. While this is very hard to retrofit, it’s a travesty it’s not acknowledged in the relevant codes. Of course, a whole system design like this will prioritize efficiency as well.
If it were up to me, I’d make it a requirement for new builds, but don’t consider myself an autocrat, just a pragmatist.
Optimizers could be used in conjunction with the Powerwall 3 correct? That is no different from when solar PV with optimizers sent DC to a standalone inverter and from there to a battery (if you had one). Thanks for the details and the clrificaion on LFP batteries. Looking forward to some future videos of installations with the Gateway 3. We don't have the same meters here in the UK, so it would be Gateway3. Good video, thanks.
Hi @grahamastor4194 Tesla does not provide any guidance about any way to use 3rd party optimizers on their system. Hypothetically you would think there would be a way to rig them up, but I assume you would be voiding the system warranty if you found a way to do that successfully. I would think if you wanted to use optimizers you would have to AC couple a different solar system with the Powerwall 3, but that would also cause you to loose the benefits of that DC coupled architecture of the all in one Powerwall 3 system. Thanks so much for the kind words and for watching the channel!
Thank you for sharing all this information.
You show the PW3 landing on the LC. But doesn't that require a derating of the main LC breaker for that much backfeed on the bus? And if you have multiple PW's, the backfeed current gets crazy fast. Shouldn't those land on the GW3 to control the total current on the LC bus? I rarely hear about the desire to NOT derate the main breaker.
And second question: Just what is this mysterious "remote meter?"
Absolutely a good point. It really depends on the bus rating and main breaker rating, but yes, in most cases when using the Gateway, the PW3 breakers will land in the internal panel board in the Gateway. Depending on whether you are using the GW2 or GW3, and some other site conditions, there can sometimes be an advantage of landing the PWs in a downstream sub panel, but in most cases not. The PW3 would have a 60A backfed breaker rating so it would not be compatible for a breaker connection on most existing electrical equipment.
In the Tesla GW2 they had two meters....the primary meter X and the secondary meter Y. In some cases even these meters were not sufficient to deal with certain on site conditions, in which case you would need to add a Neurio Meter. This is especially the case when there are non-backed up loads upstream of the GW2 or if there are multiple PV or battery systems on site. From what I understand Tesla is not building out the compatibility between the Neurio Meter and the PW3, so the mysterious "Tesla Remote Meter" is taking the place of both the secondary meter Y and the Neurio Meter. That is about all I know about it until I can get my hands on some datasheets and installation manuals when it comes out.
Thanks for watching!
Tesla Energy! 😍
Boom!
This may sound like a strange question, but if I get a Powerwall 3, do I no longer need a whole house surge protector like an Intermatic? IOW does the Tesla gateway handle surges from the grid or will an additional whole house surge protector be beneficial? I live in central Texas and and we're getting some weird blackouts , brownouts...and surges where some breakers get flipped.
Most people only have a sub-panel controlled by the Powerwall. If that’s the case, it will not help in that regard.
Basically, you would have to have it set to power your house directly, with a grid backup. This will cost you greatly by having this huge (Powerwall) capacity, and taking an efficiency hit for every kWh you consume.
Awesome video! Clears up qiestions after your BG3 video. And many ither questions. Like and subscribe!
Only thing missing was VTH and VTG, VTX. Hoping this is all included at some point.
Have Cybertruck soon which includes paid for 3V gateway. There are enormous advantages to having PW3 in system. 3V gateway will be PW3 compatible at some point, but not now.
Tesla said that I could do 3V gateway now, but would require special support for commisioning to disable 3V site controller. They recommend I instal BG2/3 or Backup Switch instead.
Any thoughts about which gateway to go with? Mostly concearned about future compatability with VTH and VTG.
Hi @bluedrew it is really tough for me to give any advice on this subject, as I am not an expert in this area, but it does appear that on Tesla's website it does show it paired with PW3 and the backup switch. I think the decision would be more based on your home loads. If you want to purchase a PW3, back up your entire home, and you are willing to wait a few more weeks/months for the GW3 to hit the shelves, the GW3 would probably be the better choice just because it is slightly less expensive. But again, I have no experience with bi-directional Tesla charging, so until I got my hands on an installation manual and some datasheets, it is a tough call.
Overpriced and impossible to buy you can order one but when you'll get it no one knows meanwhile I have zero electricity. Tried getting a powerwall in 2016 & again in 2020. Ther are better cheaper and actually available to purchase today rather than order and pray it comes someday
If you have an EV can PW3 charge it DC without inversion? Straight from the panels or battery?
To my knowledge, no. I don't believe Tesla has developed a DC:DC EV charger. The SolarEdge Smart EV Charger is the only product I am aware of that can do that.
@@RockyBroadSolarLLC I just took a look. Up to 24KW, impressive.
Why not just use smart outlets to control low priority loads? Even a dozen of these would cost next to nothing compared to the cost of a smart panel plus installation. Plus many homes are not wired to breakers in a logical enough fashion to come close to the granular control of smart outlets.
Can I add a Tesla Power wall 3 to a tesla powerwall 2 so I can sell more on the Virtual power wall?
Great question! I honestly need to look further into this and get back to you.
Can me and a couple other neighbors string these things together. So that we could share the 30 KW of PV. Now that would be an interesting microgrid.
Seems like the redundancy would be nice.
You can certainly stack multiple PW3s and multiple solar arrays together, but most AHJs and utilities would not allow neighbors to share solar arrays and batteries. In general it is one system per utility meter, so if each person has their own meter, they would each need their own individual system. That being said, shared community solar is a growing trend that I am not an expert on.
You could do this on a off Grid system
Do you install systems in Johnson City Tn?
Hi @rogerwhite5022. Unfortunately at this time I cannot offer any turn key systems in Tennessee whatsoever. Right now I am an independent energy consultant for one of the largest solar installation platforms in the US and I can offer turn key installations in 23 out of the 50 states. We are constantly expanding but this is the list as of 5/28/2024. Thank you for watching the channel!
Arizona
California
Colorado
Connecticut
Delaware
Florida
Hawaii
Idaho
Illinois
Massachusetts
Maryland
North Carolina
New Jersey
New Mexico
Nevada
Ohio
Pennsylvania
Puerto Rico
South Carolina
Texas
Utah
Virginia
West Virginia
Why use this over a backup Switch? Only reason I see is V2H with the cybertruck
If your utility company allows the use of the Backup Switch and you are buying a whole home backup system, then the Backup Switch is the way to go. Unfortunately the vast majority of utilities in the U.S. have not yet approved it's use in which case you would have to revert to either the Tesla Backup Gateway 2 or 3.
Gateway 3 has that sub panel. Might allow for easier and cheaper wiring to a charger and the PW3 itself.
That's an advantage for me. My main panel is at back of garage. Putting PW3 there not a good idea (car can crash into it). For me better to have BG3 on side of house along with PW3 and short cable run to a new UWC.
@@bluedrewtotally in your case that makes sense. I live in AZ where we have combo meter panels where the back up switch is great because you don’t have to rewire a whole panel to install the gateway.
Do you happen to know Joe @SolarSurge ?
I do not know Joe, but honestly he was an inspiration for me to start my own RUclips channel. I am one of his subscribers and watch most of his videos. I like to keep tabs on what all of the solar RUclipsrs are up to. Thanks for watching and for the comment sir!