Hmmm... The Tesla Powerwall: It's where you store the family joules.

Hi Matt. I live in the same area as you. I installed a double setup for 10kw so I didn’t need to deal with shutting down any circuits. I also am part of the grid power when they need extra demand during the year. Mostly during the summer time do they pull power from the unit. One thing I will share is I found the powerwall frequency caused some of my older electronics to go crazy when the powerwall “poisoned” my electrical system to force my solar panels to shut down. As you said in your video if you are in a power outage situation your solar panels will still power the house and any excess power will charge the powerwall. Once the powerwall is topped off, it slowly increases the 60Hz frequency to around 64.5Hz which is outside the operating range of the solar panel inverter causing it to shutdown until such time the powerwall goes below 90% SOC. Then it would shift the frequency back to 60Hz allowing the inverter to startup again. My experience was my UPS devices I had on computers would beep saying there was an incoming power problem, my electric range started locking and unlocking the door because it was turning the self cleaning option on and off. I fortunately have test equipment and checked the frequency and that’s how I found out what they were sending in a off grid situation. A call to my installer got me in touch with Tesla support and they were able to remote in and change the high frequency setting to 62.5Hz which still was outside the solar panel inverters range causing it to shut down as it should, but now my electronic gear and stove were happier with 62.5Hz vs 64.5Hz. I found this out by sheer accident. I simulated an outage by turning the main disconnect outside off to simulate an outage just to see how it all worked. That’s when I found some devices to be very sensitive to the frequency Tesla has as a default to turn off solar inverters as the batteries approach full charge. I’ve been happy with my setup and has an instant backup to my house, I barley notice the changeovers during an outage, just a quick flicker in the lights, but not enough to shut anything down. Hope that info helps anyone.

Had our Powerwall for two years now and it’s brilliant so good I’m definitely going to buy another. In the U.K. we get 4 hours of night rate with our supplier at 7.5p per kWh. for the rest of the time it’s 32p per kWh. We’ve ours set to charge up during that 4 hour period and it chargers from the solar panels too. What I love about the Tesla system is it knows if there’s going to be good solar production and will only charge from the grid if it needs to, the algorithm use is really very clever and has only got things wrong on a couple of occasions. In my opinion it’s the best cheapest per KWH domestic battery storage system out there.

You posted this two years ago and it gained you another Subscriber. Arkansas just changed their solar laws (March 2023), where the local electric companies have lobbied (and won) our state legislature to reacquire more money from revenue lost by customers who switched to solar, so I am researching adding a battery to our home solar system and become even less dependent upon our local services. Thank you for the informative video.

What do you think of the Powerwall and home batteries? Want one? Also, be sure to check out “How a Smart Home Electric Panel Fixed My Tesla Powerwall” - kzfaq.info/get/bejne/ebeHmMt1tp_DpYU.html

This kind of video is what makes KZfaq worthwhile. Have always been interested in a power wall and definitely appreciate the heads up about the potential pitfalls.

detecting the incoming storm and fully charging the battery is an awesome feature! I've got a small, older house and it's not practical for me for many reasons, but was interested to hear from your experiences, thanks for the video

Thank you so much. This video actually answered a lot of questions for me. I'm still doing more research into this, but your video is so informative. I'll probably look into getting this system by next May 2022. Thanks again.

This kind of openness about the process is fantastic! Kudos for being able to express disappointment in a process without demonizing the installer, that shows real maturity. It's part of what keeps me coming back.

Thanks for being on the bleeding edge so the rest of us can have an easier experience.

I paid 2k for a dual fuel generator, gas and electrical hookup. But I'm glad you early adopters will bring down the price and lessen installation issues for me. Thank You

Very nice review. Quite informative. Technology of our modern era is changing so quickly and becoming so complex that it is nice to hear someone put his/her experience with the transformation into terms the not-so-informed can relate to and understand.

I had Tesla install my powerwall and I would definitely recommend going with them for the install instead of a third party installer. They cam out and it was installed in a single day. No missing parts, no mistakes on wiring, etc.

Thanks for the headups. I used Tesla to install my Powerwall, and they engineered the system. I had no problems with the install or after.

Subbed not only for content, but also for the speed at which you deliver your thoughts. I LOVE not having to increase the speed of some videos! Thank you!

You describe your experiences extremely well. Straightforward no patronising easy to listen too. Well done

Like so many install companies they just want to hook up the product instead of educating and working with the customer. Those red wires zip tied to the conduit are telling. Nice explanation.

I design and manage these installs locally in the Bay Area. Your experience nails many key points. But also points out your unique issues. Excellent documentation from your experience. I could go on for a long time adding clarity or depth to everything you said, just from the opposite side of the table but my key takeaway is the customer is suffering while companies figure out how to educate and offer a new product and work out all the kinks. 2020 has also definitely thrown in its own set problems for everyone. I would like to refer customers to this video ahead of time, also the price difference should be in the quality of the company and the education it gives the customer on what they are actually getting. Plus workmanship on the install. I’m sorry but yours looks like three different people at various levels of competency installed it. Keep the videos coming🤙

Let me tell you all something I live in south Louisiana during IDA Hurricane currently going through us. I invested in a Powerwall about three months ago, I also have a Generac Generator. When I tell you my generator never came on yet and the battery has powered my home with my family and in-laws, be mine you have to manage the power by not running AC constantly. I can tell you one thing Telsa power wall is awesome and is the Future and a must-have. Second infrastructure spending is a must and Louisiana will need every bit of it.

Another great episode. Before the end I was ready to hit the order button, I want that level of control over my circuits even without a solar array or battery system.

That extra charge in response to storm warning is really cool

Best detailed video I have come across. Appreciate your time and effort, Matt!

This man deserves a “like” and “subscribe.” Thank you sir!

Thanks for this Matt. We have remodeled our, new to us, 35 year old home to make it as energy efficient and wildfire resistant (we live in the California foothills where entire, neighboring towns grasslands, shrublands and forests burn down each year) as possible. We insulated, put in new, efficient windows, insulated some more, sealed every leak, etc. The house was almost a tear down and we aren't rich. But, it was one of the few in the area that we, as members of the dying US middle class, could afford, By doing the work ourselves, we have probably doubled the value of our home, or more. Everything is geared towards going solar, as with the increasing number of firestorms happening in our area, and the increasing number of towns and homes burning down, our electric utility is shutting down power every time we have a big rain, snow, or wind storm, or major heat event. A good idea for them, as the electric utility itself is causing many of these fires. So, when I rewired the house, I made sure to run wires from our electric panel to where the solar panels will be mounted on our roof. And, we saved space in the garage for the solar equipment and powerwalls or some other battery system. A big problem for us is that there just isn't enough accurate and detailed information out there about how to run a home with solar and batteries. Even our local electricians, and we've talked to a few, don't have good answers. So, again, thanks Matt, for sharing your experiences.

I wouldn't have accepted that wiring from the second sparky. Appalling work.

I had my Powerwall 2X installed by Tesla in March, right before COVID shut things down, so things may be more complicated now. The install took most but less than a day. The installers were super and the install itself was flawless. The surprise was that it took more space than I was led to believe but this turned out not to be a big deal and was mostly related to an "outside or inside" question. The two modules were installed back to back so the install was twice as deep as one module but with the same length and height. Quite compact. (You don't need 6 feet of free space when operating BTW). The one surprise was that the Gateway replaces the service panel, which becomes useless other than the main cut-off switch. Agree that having Tesla do the install would be best. Avoids all the finger pointing issues and probably wouldn't be a huge difference in price. The Tesla install was just really good. Tesla even sent someone out to fix the minor damage to the garage drywall. Don't agree there should be any real questions about how many modules you need. The Tesla website has a simple questionnaire that will give you a recommendation. Just follow it. Basically if you have want to run your HVAC system you should get two unless the system is very small. But the website goes through this. Agree the software and app are awesome. I would likely not have done things the way the app does but it it clearly smarter than I am. For example, I was surprised to find the Powerwall discharging rapidly on Fridays but then realized that this was the right call since since on my TOU plan Saturday and Sunday are super off peak days.

I see Matt has an EGO battery charger on the plywood there. Home Depot really screwed up when they sold the product line to Lowe's. Fabulous lawn tools.

When you do a followup video, I would be really interested in understanding how participation in a virtual power plant affects the longevity of the Powerwall. In other words, how much does it increase the number of charge/discharge cycles, and how does that compare to the projected lifetime cycles of the Powerwall? Thanks!

Very clear and useful info. Thanks so much for the care you put into covering the details succinctly and in an orderly fashion without getting distracted by them as happens to so many.

LOVE my Sense Solar. We installed our entire solar system ourselves. Everything but 1 box - Service disconnect. When we applied for our RGE power feed certificate we had to have one. Didnt cost too much but its totally worth it. Adds a nice level of safety as well to my system

Thanks for your honesty about the pitfalls you encountered in the installation of your Powerwall.

I am in Oz, and my system was installed by the company I purchased it from (Tesla approved) and it took them 1 day to install, including the panels. Part of the install had to be approved by local power company and that took another week, but my basic service was not interupted by this delay. In the last 10 months, this has meant that I have made $1000 profit, due to my use being much lower than what the solar can provide, but like you the peace of mind of having the backup in the event of a power outage is the best thing.

Great info! Had ours installed through Tesla with Solar and they went though everything and our options.

Great review. I have a 15.2 KW system with 4 power walls in the Austin area. It was installed last summer by Tesla. Its worked flawlessly since day 1. Last week I was never without power. My subdivision was without grid power on and off for about 40 hours based on my backup history in the app. It was eery seeing the whole neighborhood go dark at night and my house was the only one with lights on. I helped my neighbors as much as I could by running some extension cords to my back patio so they could power some things. I have a gas furnace for heat and at night according to the app I was drawing between 0.5-0.9kw which is nothing. I thought the frigid temps in my garage would make the PW's discharge faster or not hold as much capacity for very long but that was not the case. Very thankful for the investment in this system to say the least.

My array and Powerwall have been in use here in southern NH for a week now and I am super impressed with how I can double or triple my solar use overnight now in late November. I set the reserve every night based on how much power I think I'm likely to generate to refill the battery the next day, Currently, Eversource buys my kWh for .26, but sells my banked power back to me for .32, so they are in essence charging me .06/kWh for using my own power! So I use the battery to minimize how much I send to the grid, which has varied from 0.1 to 0.8 except on one very overcast day when I sent 0 and used more from the grid. I've been able to be self-powered up to 85% on some days -- less so on others. Very pleased so far!

I’m a new Texas Resident and just in time for that crazy winter freeze we just had a few months ago. I know that freeze was pretty rare, but Texas is definitely a place where weather can get rough. I’m definitely gonna look into this when we get out of this rental and buy our house. Plus the automation part really speaks to my inner super nerd. Thanks for the tips brother.

FYI: It is not standard to have one of those giant service disconnect handles installed on the exterior of your home. Though it serves the same function, the disconnect in newer homes and homes where the services have been upgraded are "Meter mains" where the meter socket is on one side of a single metal enclosure and a panel with breaker handles is on the other, always including at least the main breaker.

Your videos are always so professionally well done.

This was an awesome video Matt. I was very curious about the powerwall and you actually brought up a lot of my concerns. Thanks.

Excellent and timely video for me! I am on track to have two power walls installed by my Utility because of forest fire power shut offs, elderly, dependent on water pump system, and installed solar that I can't use without an up and running grid. While the Utility spent all of its time and effort questioning my power needs, there has not been a word of concern about my service entrance installed somewhere between 1935 and 1950, lack of a power shut off switch, or extent of wall space for mounting, or that we have no garage for interior mounting. So thanks again for the heads up! I can weigh my options and enlighten the installation planners. Interestingly, the Utility likes solar in the desert 1000 miles away with sparking power lines running through 500 miles of forest, but derides rather than maximizing local solar rooftop and solar fences-- so much that it has mounted a huge lobby to support dependency on bare wire power line "fuses" running hither and yon up and down and across canyons at high risk of spark throw during high winds.

So after having a large Tesla Solar and 2 power wall setup - what I wish I would have known before buying is that you don't choose the amount of power walls for total backup power only, you also choose that amount for total concurrent energy usage. For example one power wall is capable for 5 kw, while two is 10 kw, three is 15 kw, etc. Also having more power walls allows for more energy storage if he grid happens be offline. With my large solar system from Tesla, two power wall can fill up and then there is no where for excess energy to go. The solar inverter has to shut off, and I am missing extra energy. Also two, depending on your AC system, you need 2 or more power walls. You gotta look at your LRA rating on your AC to figure out. Stuff I had no idea about until AFTER my system was installed. Tesla installs a sure start, but I think it messed with my capacitor so had it removed. If I had 3 power walls it would start my AC unit WITHOUT a sure start. So that being said Im definitely looking into getting a 3rd. (I realized you covered nearly all of this, so that is great!)

I purchased my 2 Powerwalls when I purchased my solar system. I have 52 sunpower panels producing 327 watts each (17KW). During the recent storm issue, between the powerwalls, limited solar, and random grid power, we didn't get any colder, in my house, than the mid 50's. My current setup is to be as self powered as possible. Because of this setup, my average electric bill is -$450 per month (yes, that is a (-) sign). I love the system.

Want to get one eventually. I live in Florida, so winter is not a problem, but hurricanes are. Thank you for the info on what to know and ask. I'll get there someday.

Matt, I have solar installed on my house (desert south west, wall to wall sunshine) and installed in my previous house as well. We don't get winter storms with wet, heavy snow that cause wide area blackouts and take some time to repair. Here most blackouts are due to summer storms with strong winds that usually only take out small areas and without deep snow repair crews get there quickly and restore power quickly. Any one residence is likely to go years between power outages that last more than 3 or 4 hours. This makes whole house backup a very low priority. Loads are modest in winter, briefly very low during spring and fall, and then serious AC usage during summer. Here solar homes go onto a none-time based rate structure, so there is not a cheaper time to recharge. That means battery load leveling or time-shifting power usage to cheaper grid rates also does not make a good ROI. My solar is 12KW and hits nearly zero annual payments. With net energy billing I get effectively perfect power storage. I love the idea of a power wall and being able to run partial or full house operations when everyone is dark, but currently it is not worth the investment.

Matt, thanks for your explanations and insights. You are definitely on my "must watch" list!

Watched your first video on battery storage yesterday actually, Tbh i discovered your channel last weekend and have kinda been on a binge

Videos are very informative. Thanks for posting them. The cost is scary for a powerwall but dreaming of building a passive home (myself) with geo thermal heat and this would be a great addition to the project.

Really good vid and many thanks for the pro level outcome. I have a 15kW gas generator with a breakout panel and mechanical cutover switch. Cost for equipment and sub-panel install- about $3,500. I keep gasoline in steel 55 gal drums with Sta-bil. 1 gallon/hour for fuel use. Rotate the gas into my cars once a year and I have gasoline delivered to refill them. I've used this system in multi-day power outages and it works flawlessly. Just a thought on an alternative to Powerwall- way less expensive, runs the entire house except for air conditioning. No drama on the install either. Again, great work on the vid, and I totally understand why folks use solar/Powerwalls.

Matt, I live in Vermont and our power company, Green Mountain Power, has a net metering program. Any additional energy my PV solar system generates goes out to the grid and I get credit, at the current rate, which I use in the winter months. 3 yrs ago they offered a program to lease a Tesla Powerwall for $15 per month for ten years. $1800 total and that covered the installation and any maintenance or repairs (non so far). The caveat is that they can draw from it at anytime to help them with their green energy goals, unless a storm is pending. It’s a great program and works flawlessly. When power goes out we literally never know it until I get the notification on my phone. I too can’t stop checking the app to see how the energy is flowing and monitoring our power usage and solar production.

Really looking forward to getting a house, solar, and powerwall some day.

I worked on some of the systems in the assembly of these units. It is kind of feels good knowing equipment I worked on and helped design resulted in this.

Personally Im considering going with Generac PowerCell due to expandability and higher peak load capacity, but it is nice hearing the pros of other battery systems.

We love ours. Love that when people are having power outages we don't have them. Love that our panels are supplying us power 24/7.

Thanks for being the beta tester of these products. Sounds like a nightmare to get it setup. But glad it was worthwhile in the end.

Hahaha, I started watching this Today, and it caused me to remember to pay my power bill. Thanks Matt. You gained a new sub!

I too live in Mass and I am getting the PowerWall2. This was very informative and I love the insight that you have on these. Gives me an idea on what I should look out for and to intercept any problems that may lie ahead. Thank you.

Matt awesome video I suppose for the $7000 price tag they would include the insulating grommet for the conduit less wiring awesome work..

That's pretty interesting that it brings the power level up before the storm on it's own I'm going to research this thanks for the info!

Several thoughts: Generac has load shedding modules that could be used to prevent over drawing your power wall. I ran into these when looking at a transfer switch for a portable generator. The installer was probably going to ignore any need for a service disconnect switch. I’m sure he’s not the first.

G'day Matt, thanks for the info. I have a 14Kw solar system and I was investigating battery backup. We do go through extended power outages here in AU particularly when the temp outside is 40+ Dec C and everyone has there AC flat chat. The issue here is even with a grid disconnect we cannot use the battery/solar if the grid power goes off. They do not permit solar/battey power during a grid outage through risk of high level feed back into the grid with solar/battery.

Thank you for highlighting those options/issues.

100% installer matters the most. My parents recently added an LG battery system to their existing solar system and the guy who did it ( and also did their solar install) did a perfect install. Plainly laid out the options for cost vs. simplicity of future expansion, and the conduit runs were pr0nographic

I have Powerwalls on order (taking AGES!) and recently learned about Enphase batteries from an energy expert/architect friend. I found you video while doing research to compare the two. It turns out that many of the downsides you mentioned are addressed by the Enphase technology. I admit that I’ve been a Tesla fangirl but I think it might be time for a change.

I’m a custom home builder. I always educate my home owners and make sure the understand the options, upgrade’s and pros / cons on everything pertaining to the home. However, very few builders do this. Why? Because they want simple, fast and on to the next job.

Enjoyed this video, looking forward to the virtual grid video.

I don't have the bell set to ring on any channel. but I watch everything from my subscriptions.

To your final question, yes, home (or at least nearby) battery sounds like a good idea! And you’re welcome. The suspense was well played and the music on point.

I do enjoy you videos… your honesty and openness with sharing the good and the bad. You see the online quick commercials for the Powerwalls… but of course you NEVER see any wiring. That of course is not reality. I am a bit of a a perfectionist and it just kills me to see that you paid someone to install the Powerwall and you ended up having to run wires externally along the conduit. And like you said… hope that can be taken care of later. And why not paint the plywood white before installing everything…. ? I have a Telecommunications and Electrical background and we used to paint the backboards with a flame resistant (code) white paint before mounting anything. Just makes for a real clean job. Anyway… thanks for sharing about the Powerwall… and again… for being so open and honest.

Doing a parts and required tools inventory prior to starting work is important.

I live in South Africa and had one installed about a year ago. Absolutely amazing!! We have power outages sometimes up to 3 times a day and this has been a life saver for us. Trying so save up to add a second one.

Glad I found you. I've been looking at solar for years. Nice to learn more about it.

Great video Matt. We are very very close to getting both solar and a Powerwall,. Now I am prepared to ask questions of my installers, and what to watch for when the come! I think we only need enough juice to run the HVAC and our Model Y, and since we live in a desert, there is ALWAYS sunshine 99.8% of the year.

Everyone from Texas searching this.

Matt, Tesla installed three Powerwalls at my house in November 2020. The installation went smoothly. For example, without me asking, Tesla installed a soft starter on my A/C. For those considering a Powerwall, I'll note two aspects. First, as expected, the system is not loss-free. On average so far, the Powerwalls return about 85% of the energy that goes into them. My main objective is to get through power outages, so I would consider "backup-only" mode, but my understanding is that batteries lose their capacity rapidly if constantly charged fully. Second, I recommend any electrical vehicle charger NOT be part of the circuits that are backed up. An EV charging overnight can rapidly drain the Powerwalls. Tesla cars appear to have some sort of integration with Powerwalls to prevent draining Powerwalls. (A customization setting is "Tesla vehicle charging will be enabled when Powerwall is above" 80%, by default.) Better charge EVs from the grid except in emergencies.

Thanks for the input. As they say, hindsight is 20/20. Even in the best plans there is always some kind of glitch. I've considered solar, but in the very far north it is useless in the winter. One thing we have plenty of is wind.

My installation went way smoother at about the same period of time. BTW it supports 7000kw peak so no worries about motor spikes. My whole panel is hooked up, and I have 8.2 kWh solar system. Never had power wall shut down because of too much sun.

The fact that your electrician did a walkthrough the night before tells me that particular electrician is VERY good at his job.

I'd recommend keeping those comm wires out of the conduit. Switching loads can couple from the HV wires into the comm wires causing communication errors or even damage. (wiki EMC)

In preparation for a Powerwall, last Winter I installed a 200 amp, single phase Honeywell ATO on my home out here in the Country. For now I'm backing up my grids electricity with a 12KW Westinghouse Propane Generator, but I wired it so that I can install a my Solar System & Powerwall easily to work with both the grid and the back up generator. The 14 KW Solar System will also have 600 watt wind generator. I have the perfect spot to install 2 Tesla powerwalls. Half my home is Propane. So during August my largest current/ usage draw is 9 KW here in the South. 2 should do it. I am a retired Power Company Distribution Technician, so I am building my own setup. FYI, If you folks have a Smart Meter on your house, you can check your power usages easy with your phone with the Power Companies Apps.

these were all great points. When i had solar installed I used all engery solar and they covered all the things your brought up.

2021 I feel will be a drastic change. I have so many hopes. Power wall and solar roof I hope to be in my near future. Great video, like the points you brought out

My 56kwh's of chevy volt batteries has been running off grid system for 3 years. It can be done. With 18000 watts of inverters runs everything.

That was very well done. I was very pleased with the direct forward information. I have solar and am thinking about a power wall. Living in Florida power goes out often.

I used Tesla and my install was super clean and fast All professional with power wall emergency shut off and everything installed I would definitely Use them again on one of my other homes I didnt have any of these problems Thats why your Video is Very Good because its explaining all the things that could go wrong when you use a company that does not install solar everyday and has to order tesla products like power wall thanks for the information

You mentioned you got something about be Powerwall to show up in the Apple Home app. Can you explain this?

Just as a by-note, I set up and ran a large house with 8 bedrooms and a recording studio in the late 1970's with battery backup to a windmill and a generator and the battery system was entirely brilliant. Ive designed several and installed them in the intervening years and they have always beaten the odds. Better inverters and smarter controls all help, but the bottom line is all about realizing how a storage system makes all the difference to any generation scenario, be it solar, wind, or mixed media. Things almost always go wrong at some time and having a simple chemical energy storage allows you to find and fix the fault without (for example) losing all your frozen goods, terrifying your kids or missing too many beats in our hectic lives. By the way, I like your narrative style a lot, appreciated.!

Had a local installer in a small town in South Australia install our tesla battery with our solar panels - bit pricey, but no problems with the installation and have been very pleased with the system. Even on quite cloudy days am getting some 'solar' input on our 8Kw system - credit in spring and summer hopefully to offset less solar in winter. Feed in credit to the grid is less than half of exporting costs. Hope it pays for itself in about 7 years.

A excellent very honest evaluation on a Tes Powerwall ,Thank you nice to see your still smiling.

Hey Matt, I'd like to thank you for the great videos you put, always very interesting topics. Regarding this video I'd suggest you to prepare a pdf file with the list of items that you needed for the entire installation and maybe an instruction regarding the installment steps to follow and a link to it so that people who are not in the US can follow your experience in case they want to get a Powerwall like you.

Thanks for the video Matt. Always like to hear your insights. I have 3 questions that hopefully someone out there can answers. 1. Can the Tesla Powerwall be installed laying flat or (if vertical plane required) can it be installed clocked 90 degrees from the normal installation? 2. Does anyone have any idea why 6 ft clearance in front of the unit is required? 3. Any obvious reason it cannot be installed on a motor yacht?

I have a secondary heating system and standby lighting. Basically I made my own 0.5kWh 24V output pack and have some strip-lights and spots that are LED types under run (3W run at 2W) to give more efficiency. I can power 8 lights from the power banks for a total of 16W. Enough to light the living room hall bathroom and bedroom with power to spare. It's at least 80% efficient, (I think more like 96 ish) but even at 80% it would run for 25 hours. Cost? Less than $500. With the newer batteries you'd easily get 0.65kWh for the same cost. The NCP3065 is a relatively cheap chip to design the constant current LED drivers round.

I was planning on getting a new roof this summer along with a natural gas generator. During my research, I found out about Tesla Roofs. When I started digging into it, I decided to go with the Tesla Roof/powerwall. Between the cost of just getting a new roof and getting the generator, the price for the Tesla option isn't much more expensive. It's not helping much now that the cost of everything is going up, but I'm hoping to have my roof and walls in before this next winter.

I want a Power Wall and a Tesla Solar Roof ; however, I cannot afford either so I have to live vicariously through you.

Q: I live in MA also and was wondering if you know of any new housing developments constructing passive energy savings homes? Also, are there any new home energy savings initiatives or programs in MA for 2021?

If you don’t have a separate panel to limit heavy power use during battery backup periods; it looks like the utility power disconnect is a manual switch. While switching the main power disconnect one could just also trip the few heavy use breakers for the backup period.

Outstanding presentation, even though your speech speed is way over what I could follow as a foreigner. Thanks for sharing!

I like that your humble enough to publicly admit where you made poor decisions that resulted in delays ... other people also shift blame on someone else -- & seem to exhibit little if any personal accountability or integrity of character, when something goes wrong they "pass the buck" as its said! Your right, the energy storage system combined with rooftop solar PV a really cool system when everything working. I would add that is should be able to work without an internet connection to really work well if there is a network outage & power outage, major natural disaster nearby that knocks out high speed internet or similar, or an extended power output, where you can jack into the unit with a laptop via a direct access web portal to "configure on the fly" to have at least some power for boiling water, keeping the fridge cold, using a electric blanket to stay warm, running small low wattage electric space heaters if the centra system fails (see backup indoor electric heating options- cheap small 700 w oil filled or little ceramic 250-500 watt units, to heat a bedroom to prevent dangerous cold harm etc

looks like this channel is only about energy (i like it)

I live in Melbourne Australia we never have snow here thankfully. I recently had a solar system installed that comprises 10 kw of panels which is 25 panels and a power wall 2. It has only been in a week sadly we have had overcast days every day. The system has still managed to keep the battery charged over 50% even though this month is the lowest in the year for sunshine. The entire system was installed in a week by a registered solar installer. It cost me $30.000.00 AUD .like you I am fascinated by watching the app showing power going into the grid or battery or just charging the battery. Although it is mid-winter here we have still managed to run the house over 90% off the solar. I have found your videos informative and entertaining you say it as it is . I appreciate the effort you put into producing them. Gary Melbourne Australia.

There are other ways to share the batteries capacity. I've been using a solar stack and wet cell nicads starting 40 years ago. The panels I bought second hand are now down to 25% of their capacity but the limit for me was the inverter unit 1500 watts peak. Experimentation and some charts showed there was ample energy available but it could not start the second fridge while the main fridge was running. So I made a first in first served unit that turned on a relay if the main fridge was running the freezer then had to wait for its turn. It's a simple device that has a low voltage transformer secondary in series with the most important appliance. It will then output a low power voltage that can pull in an ac relay that opens the feed to the second item no more inverter overload