Residential solar provider to Southern California. We provide only the best when it comes to home energy. Learn about our Solar+Storage options that allow you to become completely energy independent. www.pacificsuntech.com
Everything is changing so fast. It’s so hard to keep up as a contractor. The inspectors have a buffet of code books to reference. I usually, try and direct inspectors to call fire code when it comes be battery location as that code is generally written for fire safety. I’ve got a few rulings turned over. It’s all about how you phrase it to the inspector so as not to undermine their authority too much!
Thats the best review ive seen with regards to clipping. Could i ask a question please, im getting a quote in the uk for a 6.88kw array and have been offered either a 5.5kw or 7kw invertor for the same price. The panels are East facing for reference. Which size invertor do you feel will be better> Many thanks
I'm in the initial design phase with my installer (Straight Up Solar in St Louis) to add two PW3s to my existing PV system (31 Q-Cell panels, feeding 31 Enphase IQ8A Inverters to an Enphase 4C Combiner box as a grid-tied system. With all the credits/incentives I'm entitled to receive here in IL, I was quoted < $19K. But I'm asking to see how many Enphase 5Ps I can get for the same money. Does that sound like a fair price?
20:30 Nice, got to the end and found out what I already knew, it has a printed circuit board, some copper coiling, a microprocessor, heat sink and goop. 🤷♂️
A generator backup system, with a natural gas fuel source, can last indefinitely without solar. A battery based system won’t last more than a few days without solar. Solar isn’t a practical, economical option up here in Seattle for most of the year. The best solution here is a battery and generator hybrid system where the battery can cover the house load while the generator kicks in. A hybrid system also allows the generator to operate at near 100% capacity where the generator’s efficiency is the highest. This guy is trying to sell batteries and solar. Generators are his competition.
WE FINALLY HAVE A TECHNOLOGY TO TELL POWER PROVIDERS LIKE PGE TO KISS OUR ASS AND WHAT HAPPENS THE SOLAR ENERGY COMPANIES TAKE OVER BEING THE RIP OFF ASSHOLES THAT THE POWER COMPANYS WERE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
BATTERIES ARE A SCAM AND RIP OFF!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DESIGN THAT WAY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Just got a solar + battery system installed by SunRun the solar panels produce wonderfully but the sorry ass battery 11.8 kw storage will not last the four hours of night that we are awake and untilizing power, it really sucks that almost half of the daily power generated goes to PGE who more less rapes us by compensating us with 1kw for every 4kw that we export to them. Its 108 degrees outside today and the heat remains all night the SunRun company suggest that we not run the AC to conserve battery power at night but they must be out of ther freaking minds!!!!!!!!!!! When I ask for more battery storage capability all I get is crickets!? How is it that car batteries provide for cars just fine, power tools batteries provide for the tool just fine, cell phones batteries are also adequate but these freaken house batteries suck? Ill tell you why becouse the Home batterie cost $13000 dollars or more and the assholes designed them this way so you have to buy more!!!!!!!!!!!!!!!!!!!!
Don't be fooled people, I got solar 2yrs ago and my installer, Titan solar closed for good on June 14 2024 now I'm left with no support which was supposed to be for 25 years according to the contract. I can guarantee they will open up under a new name in a few months to scam more customers.
Don't be fooled people, I got solar 2yrs ago and my installer, Titan solar closed for good on June 14 2024 now I'm left with no support which was supposed to be for 25 years according to the contract. I can guarantee they will open up under a new name in a few months to scam more customers.
You said that this is not a DC expansion on the video at 2:53 , so is this a AC expansion, you can already used the AC coupled to connect to existing systems?
There Is A Place For Whole House Battery Backup Systems But Here In Texas I Believe Most Suburban/Rural Homeowners Will Benefit More From A Natural Gas Or Propane Whole House Generator. Power Outages After A Major Storm Can Last Several Days Longer Than A Battery Backup System With Solar Panels Can Last.
I think V2H is a great idea, using your car's battery to backup your home during a grid outage. But it's totally crazy that each carmaker has their own proprietary equipment. What happens if you get a different car in a few years? Just like with EV charging, there needs to be one industry standard for V2H equipment.
You didn’t mention the system reliability upside AC architectures have when it comes to panel level redundancy. The Enphase architecture can also more effectively deal with panel output voltage variability due to degradation of output voltage at the panel level be it by localized shading or cell failure within the panel or even complete failure of a panel.
Damn only really watched to check out the r3x and you kinda popped on it lol. Guess it’s not for everyone but I think it’s so rad. Sucks they aren’t letting people into them
We did post a Short on Saturday mentioning the event for Saturday and Sunday. The full length video did take me about 12-hours to edit, I was trying to get it up as fast as I could. Hope to see you next year though!
I had issues with Tigo RSD/optimizer paired with the EP Cube. After researching the benefits of half cell mono panels, which I have, I asked if the optimizer function could be disabled. To my surprise it was, and ever since my system has been performing excellent. Information about modern solar panel technology needs to keep getting out. Great video!
have a Tesla 12.8KW system that was installed two years ago, along with a Powerwall 2. My setup includes only one inverter, which is a 7.6KW model. I am puzzled as to why a system of this size would be equipped with just one inverter. When I contacted Tesla, the representative acknowledged that having a single inverter is the reason my production rate is always capped at 7.6KW. This was the primary reason for my call, and while the rep mentioned that they would review my system to ensure it is tuned to the correct specifications, I still have concerns. After discussing this with several customers and solar groups, the consensus is that my system design may be flawed. I understand that I may not have provided extensive details, but based on the information available, I would appreciate your opinion on this matter. Thank you for your time and expertise.
The Tesla Solar Inverter supports up to 200% DC oversizing, which is common among many string and optimized inverters. This approach helps maximize energy production, especially during seasons with lower irradiance levels. Your system's performance will naturally vary depending on your location and the time of year. For instance, during the winter, the sun sits lower in the sky, and daylight hours are shorter compared to the summer. The purpose of oversizing is to ensure better energy generation even during the winter solstice. In Southern California, I've found that 150% oversizing strikes a good balance, resulting in some solar clipping during peak summer months but maintaining strong production during winter. Although your system is slightly larger than what I typically recommend, the energy loss might not be as significant as you might think. I'd be happy to run a production simulation for you to provide a more detailed analysis. Additionally, we could use your data for an upcoming video if you're interested. Please email me at dale@pacificsuntech.com if you'd like to proceed. Thank you for reaching out, and I hope this helps clarify your concerns.
Hey Dale! Great video as always. The Tesla rep told me directly that they would be able to replace the inverter from a PW3 for about $2500 cost out of warranty. Can you confirm on your end about the inverter not being able to be swapped? Thanks man!
No, but we did just post a video discussing the advance technology that's built into solar panels. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BhuxEEOYwVs.html
I have 2 separate solar systems on my roof. one with enphase inverters the other with telsa inverters. from you video it sounds like I will be able to use the powerwall 3 for both my solar systems. just wonder if I will be able to combine my system to one battery or have more than 1 battery to make it work out.
You have a couple options available to you. The Enphase system will have to be AC coupled with the Powerwall 3 using the Backup Gateway, but if you have Tesla Solar Inverter(s?) you could replace them with the Powerwall 3 so it’s DC coupled. The Powerwall 3 can do both simultaneously
@@PacificSunTech awesome thank you. You know your stuff. Wish you serviced bay area. Not many people here have the knowledge you have. Love ur channel.
Hey, Got a question for you. Tesla design team told us that we can use more then onePW3 with back up switch without the gateway and just land them in the main panel. Are they wrong? will AHJ reject that design? Thank you!
I am coming to you via an iPad RU-vid app, and I may be missing it, but I do not see the link to your odbc2 monitoring app that you said that you were going to provide in the description, please reply with it. Thank you.
I would buy one or two of them today. However. $5700 for delivery and install just isn’t happening. If they let me go pick up from a Tesla star and use our own guy. Sold. I’d buy today. Cash. Finance. Whatever you wanna do. But there’s no way I’m paying $8,000 for a Powerwall. And $5,700 for it to get to me. Why Tesla. Because when you look at the other easy installs. Ecoflow or Fx3800. Their price is almost Tesla high once you build it to a comparable level. As for Franklin or Banaza or Bongobongo. I’m not buying any $8,000+ battery from a company that came along last year. Tesla will be here in 10 years. Franklin and the others. Dunno. But anything from a venture capital group in San Francisco. Nope. I’m good.
When you look at the OBD data verses the vehicle display, you need to remember that the OBD is showing the actual battery SOC whereas the display adjusts for the hidden battery buffer... which on an e-tron is at the top of the battery. Another issue is the chemistry. LFP (LiFePO4) vs NMC. A third is that degradation is non-linear. The battery degradation rate typically starts out steep at the beginning but slows down drastically after that. And a fourth is time, as I noticed another poster said. Calendar aging... but calendar aging is a bit of a beast to calculate because it is primarily a function of the battery voltage (of the cell voltage) x temperature. So this really depends on the temperatures the battery is exposed to and for how long... it will degrade more slowly in colder temperatures and at lower states of charge and more quickly at higher temperatures and higher states of charge. Extreme conditions cause greater problems. but nominal hot weather during the day might not necessarily cause faster aging because the battery is a huge mass so its ambient temperatures tends to be a combination of day + night temperatures. And chemistry as well... so for example, NMC will degrade faster when held at a high state of charge, which is why charging to 80% is recommended (some people even do 70%). But when a LFP battery is charged to 100% and charging stops, the cell voltage actually drops down significantly (while staying at 100% SOC), relieving some of the stress. When a LFP battery is drained even a little, even just down to 95%, the effects of calendar aging are greatly diminished and at 70% at 20-25C or so calendar aging pretty much stops. Lots of knobs.
The longest running battery health study is the Dutch/Belgium auto data base which goes right back to when the Model S was prevalent. It shows that degradation is the steepest at forming with ~5% degradation in the first 50k miles. Thereafter it averages 1% per 50k. docs.google.com/spreadsheets/d/t024bMoRiDPIDialGnuKPsg/edit#gid=0 A recent study by Recurrent Auto found that removing the catastrophic failures of early Leaf, Bolt and Kona mass recalls from data, modern batteries do not meet warranty life in less than 1.5% of cases and with Tesla an order of magnitude better than that. Dr Dahn has conducted a long running study on longevity in LiIon, having been responsible for doubling the cycle life within a year of employment by Tesla. In 2019 he published a white paper to all LiIon users and manufacturers showing them how to make a 'million mile' battery. Those cells are still under running tests and have reached 4 million or 10k full cycles. Recently he has showed that NCM can have a cycle life equal to LFP if charged to less than 4.2v, temperature controlled at 20C. His longevity advice is to charge a typical EV from 30-70% for it to last indefinitely, which matches the requirements of a typical urban vehicle usage. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rOAYjcO6kao.html According to the Noble Prize battery guru Goodenough, Lithium batteries are not suitable for vehicle use! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-kR8CESrigEg.html
If the intent is to use the Powerwall 2 solely for backup, with no time of use element to be concerned with, does it then make sense to set the charge level for the battery in as narrow a range as possible, say 75-80% to minimize charge/discharge, also avoiding harmful 100% level? This is consistent with the recommendation for daily driving of Tesla NMC battery vehicles. If the grid down you would get alerted by the app and you could lower the 75% to 20% or whatever minimum you are comfortable with.
This is something I'm very interested in. Just how long will my powerwall last? Anyway the powerwall (2 anyway) has an api you can monitor it directly and don't need to attempt the comparison and there should be enough out there for a reasonable guess to be made. I've been monitoring mine, which I've had since October 2023. First thing actual capacity of the powerwall is not 13.5KwH, it's 14, or at least that was what I thought, mine started out with 14507KwH according to the API. Why? I think Tesla has worked out it's in danger of having warranty claims and is seeking to mitigate. Today my powerwall is down to 14200KwH so it's lost 307 watts of capacity in less than 7 months, It is therefore on schedule to lose 526w a year, which is 5.2KwH over 10 years. 70% of 13.5KwH is 9.45KwH this is the promised capacity. Extrapolating my 10 years capacity I get 9.244KwH, which is slightly under. My battery is in a garage, but is being force discharged, so I will exceed the maximum rated out (more than likely) so my warranty will actually be less than 10 years 8-9 I think. Anyway there are lots of caveats my battery seems bigger than most, I've only had it 7 months, age related wear might cause an increased decline, etc. That said I don't think Tesla is kidding your battery will have just over 70% after 10 years ordinary use. 37 years seems unlikely.
Most batteries have a true capacity and a usable capacity. The last I heard the PW had a true capacity of 14kWh and the usable capacity is 13.5kWh. It’s possible that the batteries true capacity has increased over the years with units reaching 14.5kWh. Battery degradation isn’t as linear is you might think and a battery typically losses the most of its capacity in the first year before leveling off with a lower rate of degradation. Regardless there are a lot of variables, and not enough shared data to make a distinctive conclusion. Ideally these companies could publish their finds of real world battery SoC, and we can overlay them to seen if there is a pattern. Much like they have done with EV data sharing.
