Importance of Natural Resources

Is a Tesla Powerwall 2 Worth the Money?


– I just got my Tesla
Powerwalls installed, and I’m sort of in love with them. It’s just such a cool feeling to know that you no longer
need the energy grid for, you know, your daily life. However, when I started
to look into the data, it came clear to me that not everyone should buy one of these. So I wanted to dig into just
kind of my experience so far, what I’ve learned, and
maybe help guide you on whether or not a Tesla
Powerwall makes sense for your home. Let’s dive in. (upbeat music) The latest version of the Tesla Powerwall, also called the Tesla Powerwall 2, has just under 14
kilowatt hours of energy, 13.5 is what they list, and this is part of the Tesla ecosystem, where if you get solar, and
you have the home batteries, and then you have the cars, you have a lot of
freedom and independence, based on just the stuff you’re generating and storing at your own home. Most houses use around 28 kilowatt hours of energy per day, so with two of these, at 27 kilowatt hours, more or less, you’re pretty good to
be a full day off grid, and then of course within those 27 hours, if the sun comes out even a little bit, your solar panel should
charge them back up, giving you this kind of off-grid, energy independent feeling. Now typically these run around
$7,000 with installation. Every install is different, so when you go through this process, you have to fill out a form, take pictures of lots of things, and send it to them, and then they come back with a quote. I earned these two Powerwalls from the Tesla Referral
Program back in 2017. Thank you to everyone that used my code, because these are super cool, and as I mentioned, I am
really, really stoked on them. Now the ones I got were the white ones. These are the standard ones you buy. You may have seen some other folks that received the red ones that were actually physically signed by JB, and Elon, and Franz. That’s super cool, but it actually kind of worked out better, because I think the
white ones look better, and as you’ll see when we
talk about installation, we had to put them outside, and it would just be kind of a shame to have these really fancy ones, with the hand signature, sitting out, getting rained on every day. Speaking of installation, it actually was kind of a challenge. The original idea I had was
to put them in the garage, but the garage, where
they would be located, was over 100 feet from where
the electrical panel is. My house, built in the 1950s, put the electrical panel
kind of on the opposite end, and so it was gonna be too far, because there’s a communication wire that has to run, and it
runs at a very low voltage, so over 100 feet it just
doesn’t really work as well. Now they can change that apparently, but then they’d have to kind
of reconfigure the system and all that, and it just
didn’t make a whole lot of sense to put them in the garage. Plus, if they are in your garage, they have to have these
barriers in front of them, so you don’t hit them, or they have to be mounted high enough that they would be above
the standard hood height of a vehicle, which is pretty high. My garage is pretty short,
so it just didn’t make sense, so that plan was out. The next challenge was to figure out where to put them outside. We would just mount them on the house, however they can’t be next to a bedroom, and so we had to find a place where we didn’t have a bedroom, and we could put it, and so it ended up being just right between the studio that I use to work, that I use to make these videos from, and our master bathroom. It’s kind of right next to the AC unit, and it’s close to where
the electrical panel is, so it all made sense. One of the interesting things is that we had to basically
make a concrete pad for them to sit on, because it’s not, there’s
no concrete there, and I was able to find one for about $50 from a local building supply company. So this is a tip, if you are in this boat, trying to do this, their initial thought was, you need to actually pour concrete, you know, go make molds
and make a concrete pad, but a local building company
here in San Diego just had one that I could buy for $50,
so I went and did that. Worked out great. So in addition to the Powerwalls, they both had to have their
own AC disconnect switches. Then, you had to have a gateway and a whole new panel setup, with basically every circuit from the old electrical panel rewired into this new one, and
basically now the grid itself is upstream from the rest of your house, meaning the grid can go away, and you can still function. In fact, that’s how the
primary function works. Typically if my solar system
isn’t generating enough power, I am pulling from the battery. So it’s really cool, and
it does give you the sense of independence and freedom, because in theory you could go off grid. However, that doesn’t really
make a whole lot of sense. One thing Tesla just added was the ability to look
at very detailed data about how you’re using your energy. And what glorious data it is. So in the app you can see that I have my Powerwall
here, it’s currently charging. There’s two of them listed there, and you can click into the power flow, which is easily my favorite
diagram of all time, showing exactly what’s
happening with your energy. Here we’re looking at over four kilowatts of solar energy being generated right now. 3.6 of that, or 3.5
going back to the grid, so I’m building up a credit
with the electric company here, and .5 of it powering the stuff that’s currently used in my house, and occasionally it’s powering up, or it’s charging the Powerwall. I can dive into the history of this, and see very detailed
stats of what’s happening with all these different sources, and how the energy is flowing
from one place to the other. And until recently, you
could only look at today and yesterday in the app. Now, you can actually click, and look at a week, or even a month. I don’t have that much data, but you can kind of go back, look at the lifetime of it, etc., etc. So they’re giving you just
really cool visualizations, and ways to understand this data, and I love that,
obviously, that’s my thing. But prior to this, you
had to go into the APIs, and kind of reverse engineer it, so thankfully they did this, and one of the cool things is, if you don’t like these visualizations, I particularly don’t find bar charts are good over time series, which is the data we’re looking at here, you can download the data, and obviously I did that. Either way, I think it’s really cool that they’re giving you this data, and it’s really awesome just to see this. I actually made an old iPad
into sort of an art stand, with that power flow thing, so anytime we have people over, I can kind of explain what’s going on. It’s just a really
beautiful visualization, so cheers to the Tesla
team for making that. The bar charts and the other stuff, I think can be better, but hey, it’s a step in the right direction, and you’re freeing the data about this, which is amazing. One of the challenges I’ve found so far with the Powerwall is charging my car. So, typically I charge at work. I have a charger here, and
that kind of fills up mine, but Jenny charges our Model 3 at home. Now she doesn’t drive a lot, so she doesn’t charge that often. You know, maybe once or
twice a week at most, but when she does, if you think about it, the Model 3 Long Range has somewhere around 78 kilowatt hours of energy stored, and if she needs to fill that thing up from close to zero, this
27 kilowatt hours stored in the Powerwalls are just a snack. That’s not even, not
even approaching enough. On a regular basis, if you went to work, and came back and charged every night, you would probably be fine, but essentially what’s gonna happen is we’re just gonna just
hammer that battery, and then have to go to grid power. Now thankfully, because we’re
using even less grid power than before, we’ve built up enough credits to where it all kind of washes out. Going back to the app though, there are a few ways to
setup your Powerwall, and I think it would make sense just to kind of talk about these, and give you my thoughts on them. I’m not sure I’ve had
enough experience yet to be the expert at this, or really figure out what’s best, but when you go into the
Customize option here, you can see there are different ways to kind of use the energy
stored in your Powerwall. The first one is Backup-only, where you never really use the Powerwall, except in the case of a backup, so in the case of a storm,
or something like that. The other one is this Self-powered one, where generally all your
energy’s gonna be coming out of there, when, instead
of pulling from the grid. I like this, because that
means I’m just reducing the actual load on the grid, and I’m becoming more self-sufficient. Now, in there you can, and I’ve set it here to 20%, you can reserve a certain percent of the battery for power outages. For here in San Diego, it doesn’t make a lot of sense, because we really don’t have
power outages regularly, but if you do, you may want to set that up to 30, 40%, whatever
really makes sense, or just go on the backup only. So, I choose the self-powered mode, because I feel like it’s
just really good being, you know, kind of off
grid as much as possible. Now there’s also this time-based control. So if I click on this advanced one here, what you’ll see is, it actually will learn the peak and off-peak schedule, and so here in San Diego, as well as many other parts of the world, or other parts of the country now, are going to this time of use rating, where you pay more for the peak rates, versus the off-peak, and
this is pretty common. And you can actually kind of design that, and set it up to match whatever your local company charges you. That way, let’s say here in San Diego, it’s between 4:00 and 9:00pm
are the super high peak, I think it’s like 53
cents a kilowatt hour, which is nuts. You can say, “Hey, use the
battery during that time, “but 12:00 to 5:00am, when
energy is much cheaper, “don’t worry about it. “Go ahead and pull from the grid, “just kind of let the battery be.” This actually could save
or help with that problem with charging the car, where if the car is designed to charge between 12:00 and 5:00am,
and you use this mode, then it may, you know, not
use the battery at all, and go straight to the grid, which seems like a better deal. So, I’ll have to play with this over time, and see exactly what makes sense, but right now I’m just kind of in love with this idea of being self-powered, and being off-grid as much as I can be, living in a relatively
suburban kind of area. And then of course you
have this Storm Watch, which I kind of mentioned, but they actually have a system here that monitors the weather patterns, and looks for when
there’s a storm coming up, and it will kind of prep
the battery for that, so you don’t have to
really worry about it. You just leave that on. If there is a storm coming that looks like it may cause power, it’ll adjust the energy
flow to optimize for that, so that way if you guys do have an issue, it’ll be fine. So, really cool. Really advanced, you know, and like I said, I just love this concept of being off-grid, or kind of
as independent as I can be. So speaking of going off-grid, it definitely is possible
with solar panels, and batteries, but the
cost of being connected to the grid, and having
it as a reliable backup, is pretty low, it’s $10 a month, and for me that’s
something that’s worth it. You know, it’s cheaper than Netflix, and a lot of other things
you’d probably spend money on, and it gives me reliable backup power. But another thing you could do, is if you don’t have solar right now, you can take advantage of
the federal 30% tax credit, the federal ITC it’s
called, and bundle this in. So, you would actually
get 30% off the cost of your Powerwall, making the economics much more palatable, much better, much more in your favor, versus just buying them outright, where honestly the economics
don’t make a lot of sense for most people. Let’s look at my actual
utility bill from last year, and just kind of see
how this would shake out without the Powerwalls, but with solar. Now most months I actually did not produce more than 100% of the
power that I consumed, so I was still using the grid, even though I had a
relatively large solar system on my house. But, you know, due to the
power company giving me a $500 credit for having solar, I ended up not owing anything
for all of last year, other than that $10 a
month connection fee, which was kind of a separate thing that you just have to pay for. And the reason this works is because of Net Energy Metering. Now NEM is a sort of controversial topic. There were some recent changes to it, but in the end, the way
it works is you sell back, or you, you know, give back energy that is in excess of
whatever you’re consuming at that moment. So what you do is you kind of use the grid as a battery here, and you
give them that excess storage, and then, when the sun goes down, and your solar panels
are no longer working, you essentially buy it back. You use those credits. So if you’re generating more
energy than you’re consuming, you have a negative balance. In general, this is a super common thing that makes the economics of the Powerwalls really not
worth it for most people. Now you may be wondering, hey, do I have Net Energy Metering? Well I’ll put a link to a website there, that’ll let you know, but 38 states, plus a
lot of the territories and provinces of the
United States offer this, so chances are you do. So, in that case, when you have solar, and Net Energy Metering, it doesn’t really make hardly any sense to actually put your money into this, except for one case I’ll
talk about in a second. But, let’s assume you
don’t have solar right now, you could actually benefit from this, and a recent Stanford study showed that across the warranty period, the 10 year warranty that
you get on the Powerwalls, if your average per kilowatt hour price is above 13.9 cents, you would at least break even, if not come out, you know, well ahead. Now that comes out to about 12
states in the United States. Some of the places with the
most expensive electricity are the ones you can imagine, Hawaii of course being
number one as always, so in those places, if
you don’t have solar, this could make a lot of sense, by doing what I like
to call rate arbitrage, another term you may see out
there is called peak shaving, where essentially when you have the lowest time of use rating,
the cheapest electricity, you fill these up, and
then during the highest, the peak time, you live off of them, and that was in the app where I showed you that customize, where
it’ll actually figure that out for you. You just kind of go in and tell it when is the expensive, the peak rates, versus the off-peak rates. But that other case
where it does make sense, is if you live somewhere that
have regular power outages. So, in the United States, this is kind of the sub-Atlantic area, the south that is on the coastal side, where hurricanes regularly come, and, you know, knock out power, or cause other kind of problems like that, these things could be
really beneficial for you. You know, it could
literally be the difference between life and death in some cases. There are a lot of cases, and a lot of people in the world that live in areas with kind of insecure, or unstable electricity grids, and so if you live in one of those places, this could be something that, whether or not the economics
make a whole lot of sense, having energy when the grid is down, and that being a regular thing, is totally gonna be worth it for you. So it’s not one of those things where you’re just looking to save money. You’re looking to just
have a better quality of life with this, and
this definitely offers you that opportunity. And lastly, I really can’t stress enough how awesome it feels to look and see that I am really not using any electricity from the grid at all. I mean it’s just incredible seeing this, and knowing that I have control over how I’m consuming energy, and what’s happening to it. It really is a great feeling, and so, you know, we’re human, and you know this is why
behavioral economics exist, because we’re not machines, this isn’t just a math equation here, and so, you know, that
is definitely valuable, and so if that’s something
that is valuable to you, and you can do things like pair it with a solar purchase, or get, you know, one of the discounts from the
S-CHIP program in California, or a similar one where you live, then this can totally make sense, right? It financially may not be 100%, but knowing that you
have energy independence, and security, could be enough for you, depending on your financial situation. So I’m curious what you
guys have to say about this. Do you have a Powerwall,
or are you considering one? Do you have solar? Let me know if there’s anything I missed in these calculations,
because that’s essentially what we’re trying to do here, is explore sustainable
technologies like this, and see how they’re transforming
the world around us, through the lens of data, of course. So thank you for watching. Don’t forget, when you free the
data, your mind will follow. I’ll see you guys back
here in the next one. (upbeat music) Hey thanks for watching the video. I hope you got something out of it. Now if you wanna dive a little bit deeper, become a part of the
Teslanomics community, consider joining us on Patreon. So, what we have setup
are different things and ways to engage,
such as a Discord group, which is like this chatroom, that is just the folks
that support the channel through Patreon. I’m on there almost daily, engaging in conversation about how Tesla, and others like them, are
changing the world around us for the better. So, if you’d like to learn more, go ahead and go to
patreon.com/teslanomics, and I hope to see you there soon.


Reader Comments

  1. Just wondering as you mentioned it can’t be installed next to a bedroom, can it be installed under a bedroom, in a basement setting with concrete walls?

  2. We have three PW2s. Within a month of installation, we had a 8hr power outage. Everyone else lost power except us. That alone was worth it.

  3. Looked at a power wall when I installed solar, but determined it was not cost effective. I live in Texas and power is 8.7 cents per KH. Given about a ten year life expectancy for the batteries I would never recoup the cost of the wall. Will install some kind of battery backup, but may wait a year or two for technology to drive cost down. Given power cost in San Diego I can see how it pays for itself before battery replacement.

  4. So that unit is worth thousands of dollars and you left it outdoors to get ripped off? If a thief will steal your air conditioner for $50 worth of copper don't you think he would swipe your battery?

  5. I have solar and it has worked out well in southern California. I think solar and wind in centralized power plants for the grid is not a good idea and aggressive programs to get 30%, 50% or more electricity from solar and wind are not realistic and certainly not affordable, particularly if natural gas prices return to historic levels. So I am considering a powerwall because I expect the California grid to degrade in the next few years. Then there is the increasing frequency of grid disconnects in the event of a wildfire threat.

  6. My TOU rate is so cheap, solar isn’t cost effective. Instead, using a powerwall during peak hours would probably get a return on investment much faster because of the cost.

    Also, the local utility company has a 50%, up to $3,000 rebate incentive specifically for battery storage products. Also, if this is used in conjunction with a solar system, it qualifies for the 30% federal tax credit.

  7. Ben, we got solar and the power wall. We installed in our garage on the wall. We live in riverside county where temps are over 100 daily in the summer. With our A/C set at 76 and charging our model 3 our electricity bill was $10 for June, July, and August! Totally worth it, last year was $3-400+ a month

  8. The powerwall supports 32 amps, which circuits did you setup for your home? I assume kitchen at the least but how much circuit coverage do you have?

  9. Those batteries have a lifespan of little better than tubular plate lead acid units .
    Better off using Nickel Iron ( Edison ) batteries . 30-50 year lifespan . ( proven )

  10. Video Summarized: The powerwall is expensive and makes no economic sense to install unless: the government pays for it, and your power company is price gouging with insane peak rates, and you are legally not allowed to run your own generator (if your electricity bill exceeds $200 per month, most likely running your own diesel generator would be cheaper than being grid connected)… Tough to ever see a real justification for anyone who is technically capable (there are lots of other ways to achieve the same end as a battery pack with finite lifespan)….

  11. i live in seattle ive been running panels for ten years but no batteries no controllers not even a switch when the clouds break for a half hour the sun on the panel turns on the vent fans in my green house attic and even pules air from the crawl space over my fridge cooler and out the back wall the scrounged up panels im replacing with ebay panels but for sun to hit the hole panel they need to be compact i were shorts year round even in the snow to get enough sun on me to stay out off the headshrinkers office

  12. Self-powered should also smooth out spikes and brownouts and probably a cleaner sine-wave.

    This is how we do power in a datacenter..

  13. This was a great, informative video. Questions, How much would each battery be without installation? Also, Tesla doesn't make a battery powerful enough that you only need one?

  14. I think you are confused about what this system does. Why do you say you no longer need the energy grid when the Powerwall doesn't work off grid?

  15. Hi from accros the pond Ben. Here in the uk we have Zappi this would help with the charging of your wifes car.. lots of videos on youtube about it but i would advice the spectrum geeks channel as this mixes it with a tesla powerwall

  16. Consider the Tesla Powerwall 2 a giant uninterrupted power supply (UPS) but with the ability to draw power out as a second source when solar power is low (at night or over cast days) and only using grid power as a last resort with the assumption that you already have credit built up with your utility company.

  17. I dig the spontaneous cover shots. Ben with head in hands. Ben crouching next to PW2….none of that staged. Perhaps in just one episode…just one, I could see a human being behind the 1950's radio head persona or a moment of self deprecation….audience would connect better.

  18. I am in FL and looking into solar…but because I have natural gas available at my house, I am having a whole house backup natgas generator installed. In the case of an extended grid down scenario, that would likely be able to provide many more days of power than a Powerwall would. As long as the gas lines around me are not disrupted, I should have power. Total cost for the 20kw generator and installation is just over $6k.

  19. You’re a fart-sniffin California pseudo-hippie.

    “Well yea, maybe it doesn’t make financial sense, or environmental sense, but it sure feels good!”

  20. “Buy power when it’s cheap, use battery when it’s expensive. And the battery is useful if you have blackouts all the time”

    INSIGHTFUL STUFF

  21. Your better off with a Simplify battery system… Being they don't contain any Colbalt, making them totally non-toxic, with-out thermal runaway…

  22. I think what your assessment is missing is future proofing. Your thesis involves today values. You could posit how the next ten years could affect the economics. I know my $90K Model S hasn't paid for itself in gas savings in the four years I have had it, but I have avoided many accidents with the "driver assistance" features and taken way more road trips than I ever have with free supercharging. Are Powerwalls an enabler or future proof(ing)?

  23. Note that when one is living off solar the power is clean and not adding to the carbon footprint. Also a grid tied system generating a surplus offsets carbon. A system that is in shortage of generation but is charging a Powerwall during the day when rates are lowest because solar systems are feeding into the grid is also offsetting carbon.

  24. Great to know. Been thinking of this because we do have solar panels. But we also have net metering in Maryland so maybe a power wall is not feasible.

  25. My SunPower 3.35 kw solar PV system brings a smile to my face and being every morning while I enjoy a cup of coffee before work. Priceless. Next step is a Powerwall 2, small 500 watt wind turbine and electric vehicle.

  26. I was thinking of having solar and batteries in the Philippines 🇵🇭, I still think its a good idea but in the past 14 months I’ve spent there the power hasn’t been down for more than a few seconds.. not bad for a province in the third world. I will continue my research as trying to find good quality solar panel is hard, the philippine seem to get the third rate Chinese stuff

  27. if yo u live in a region where it rains for 4 months an its cloudy 5 months of the rest of the year. 2 packs are not enough to supply a every day needs. THIS ONLY WORKS IN REGIONS WITH
    365 DAYS OF SUN.

  28. You talk about us in the south getting powerwalls for hurricane backup power, lol i guess you never lived 7 to 10 days without grid power! #2 my daily power use is about 70 kwh/day…..solar is not an option a 20kw+ system has to be insured for $1 million as per requirements of the power company….Ill wait while you call your homeowners insurance company for new quotes #3 no one would spend $7k a pop on 4-6 powerwalls when i can buy a brand new diesel generator for way less, even with paying a few thousand in fuel over the years.

  29. I am getting ready to have two power walls installed they already came out and did their site survey. I have two solar arrays already, totaling 29 panels. They said I have some issues to resolve in my garage/studio breaker panel before they can do the installation.
    I do not understand the reasons behind that. The garage is 100 feet away from me house main breaker panel.
    The power walls are not going in my garage. They are going next to the main breaker on my house.

  30. I have solar today (live in SoCal). We have been considering a battery. Can you do a video and provide more info on SGIP? This is the 1st we have heard about it.

  31. Deff need to be able to use the car(s) batteries as well in an emergency storm or something similar, forget the 14kwh powerwall and solar only…

    If this was done properly, as in Tesla doing it lol, not some random person.
    You might not even wouldn't need a powerwall anymore, per say…

    Maybe thats why! Lol

    Being reliativily low on storage power. The power wall is about 14kw. A model S is 75kw and above, for example.

    So say if you have a Model X and an S P100D. Thats a lottt of KWh storage lol. Like what, 180kws?
    You could run a fridge for weeks, months maybe lol. Coupled with solar panels as well just makes it even better obviously too…

  32. Why dont you tell your wife to charge every day? 😀 it is also possible to configure the Power to the charger. For example by Time or with a small Computer, for example an arduino or raspberry Pi to only charge when you'd normally send Power to the grid.

  33. I have solar and no powerwalls. My state has net metering, no time of use metering and very little power outages. So as neat as it would be it doesn't make financial sense for us. Great video Ben. Glad you discussed net metering because most have no clue about it.

  34. So what charges the PowerWall if not the "energy grid"? Those solar panels that obviously can't "match" the supposed "output" of the PowerWall or else the PowerWall could be much "smaller"?

  35. The "grid" was already "upstream" from the "rest of the house". And unless there's a power outage, you are never "off the grid". Especially with a DC "power supply" for your AC home. An income tax credit is also not a "discount" on the purchase price. It doesn't even allow you to "deduct" more than 30% of the purchase price from your taxable income. At best you'll "break even" and your "tax refund" will "offset" the purchase and installation costs.

  36. Still waiting for my Powerwall2 to work correctly. It’s not charging to full 13kw capacity, saying it’s 100% after 2kw.

    Kind of disappointing to start with, but even more disappointing when it takes several calls to their help line for them to finally accept there is an issue.

  37. Hello, I would like to learn more about something you mentioned, peak shaving, where I live you’re getting charged a penalty if your peak is above 10kw. So I wonder if this can be a solution, never the less our kWh is above 0.21 USD/kWh.

  38. Energy metering the electric company is not stupid in the future they will charge more for u to buy it back and u end up paying more – the best way to do is go off grid and use a wind and gas generator as back up – u have control not corrupt cooperations that controls prices

  39. At no point have you factored in the cost of actually purchasing the batteries. I think you mentioned at the start that you got yours through the referral program? When you look at the economics today and factor in all those costs, then you dont end up cost neutral. In addition to this, all the power companies are at liberty to change the rules at any time, therefore your 20yr payback plan can easily become a negative equity solution. Its just not worth taking the risk at the moment. Until you can get a plan that the energy and government are prepared to sign up to over the full lifetime of the powerwall + solar system, you are playing the lottery.

  40. Has anyone actually installed a Powerwall and run it in a way that both qualifies for the 30% federal tax credit and the California SGIP rebate? They appear to be mutually exclusive.

  41. To answer your question, yesterday I finished a major electrical upgrade to my early 20th century home and plan to install a Powerwall next for critical load backup. I spoke to Tesla today (their prerequisites are finally in place) and I’ll probably get it installed yet this year. I want it more for reliability reasons so I’m going with a configuration that will meet California’s SGIP program requirements (I can’t see a way to have it meet the federal tax credit requirements at the same time).

  42. It would take us almost 10 years to pay off those power walls that doesn't includes the solar panels in the roof. 14 cents per kwh will take decades to pay back the investment we might even need 3 or 4 power walls since the sun doesn't shine nearly as much as the SOUTHWEST USA

  43. here in ADELANTO CA, the door knockers come by trying to st up appointments to sell the systems,but they guard the information until the meeting so , everyone thinks its a BIG SCAM, well ,Batteries not included ?? why?? Scam..!!!. 9 companies moving in, for roof space,,,, takes 3 months to install,,, (secrets,)

  44. Idea of battery backup in case of power disruption does sound cool but would not stand to scrutiny of economics. The best (cheapest) solution is a gas powered generator. You can buy one from couple $100 for bacic couple kw or fully automatic enough for a large ac system for under $5k.

  45. I'm looking into installing a full array of solar panels and a power wall for my house here in Southern California. A couple things I'm a little confused about, first of all, can you get a 30% rebate for the power wall also? (apart from the solar array) And secondly, there's a couple parts where you made it sound as if you could install a power wall without solar panels, is this possible? I agree with you, the feeling of independence is paramount, specially in our cities where over density and over population pushes the grid ever more closely to major power blackouts! Thanks for the video! 😎👍🏻

  46. I have a powerwall 2 being installed on 18th September in Kent United Kingdom.  Once its done I will know how it went and if its charging my Electric Wheelchair and my hoists, also a lot of my stuff is controlled through the web, I am a bit concerned what happens if our internet is down.  WE SHALL SEE Little Green Energy Company (name of Teslas agent over here who is selling it and installing it, £10,000)  Pete

  47. I'm thinking its best to send the power back into the grid as to avoid charging and discharging the batteries. Better lifespan?? If they pay you for the power you just pay when you want it back. Then just use it for emergencies.

  48. As early as next year(?) Vehicle to grid (more specifically, vehicle to home!) Will become more common with the CCS 3 protocol.
    That will reduce / eliminate the need for a storage battery for many users.

  49. Great review. You can also reduce the charge rate on your car as well to not overrun the powerwall. No need to charge in 4 hours if it's idle for 12+.

    Another point on net metering is that the rates returned are not always 1:1 or very favorable. I wouldn't totally disregard in net-metered states.

  50. We've had 3 powerwalls for a little over a year. We added them to our existing solar PV system. We live in San Diego and have the EV-TOU-5 plan which gives us 9.3 cents/kwh at night and that 53 cents/kwh peak rate. We use the advanced feature so our two EVs charge of the grid at night. That may take 40 kwh, or about $4 (keep it simple). During the peak time we run off the batteries and send about 8 kwh to the grid, giving us that $4 credit to offset the 40 we used at night.

    Since we can now download the data I took the time to go back for every day and download the data. I then ran it through some analysis to see how much the powerwalls are saving us by allowing us to shift when we use our solar vs sending to the grid. My basic assumption was if you take the home usage and minus the solar generated you'd get what the power company would see had you no powerwalls. I then ran that through the EV-TOU-5 pricing structure and compared to running what actually the power company reports. The powerwalls saved us around $760 for a year. My out of pocket expense for three powerwalls and installation was around $14000 so in their guaranteed life of ten years they won't pay for themselves. Had we more power outages there would be more cost savings because my solar wouldn't be dormant, it can still produce. Of course I guess that's not a money savings because no power at all is free — but I don't have to throw away the contents of our freezer either.

    If you want to chat about it sometime I can show you my data and analysis.

  51. Holy God. You exploited YouTube for referrels to get free products then produce a quarter researched 10+ min video

  52. i would like to have powerwalls .. but 1 major thing turns me away (if i dindt get this wrong -> info here in germany isnt very reliable .. and info on the internet … well)

    but the thing that i hate most about this is that the powerwalls cant be connected DC on your solar … why do i have to waste energy to convert my DC solar into AC and then back into DC to store in the battery … that really doenst make a lot of sense … and there are systems that are DC chargeable and still funktion as a proper UPS for your house at the same time (so its not impossible)

    i mean if it was available as an upgrade (i know the economics would be horrible for it) then i could at least satisfy my efficiency loving part, but knowing my solar energy will be (partly) wasted because of conversion losses that arent necesary rubs me the wrong way

    (still great product and i really want one .. or three that is)

  53. It sounds like this guy got his Powerwall 2 for free while the rest of us has to pay $18000. How the hell can anyone get enough referrals to get not one but two Powerwalls….

  54. Full tesla system in my house I live in texas if you live in area where you have access to extended time of sun this is a nobrainer

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