Can you run your house on a battery? Tesla Powerwall 2 (Founders Series) & Tesla Backup Gateway 2

Can you run your house on a battery? Tesla Powerwall 2 (Founders Series) & Tesla Backup Gateway 2


Hello and welcome to Fully Charged. Now
this is a little bit of an update about the Tesla Powerwall and the solar panels
that I have in my house. We did a program about this a while ago, it’s been very popular and I have been waiting to do an update when
something has changed and we know more about it. Okay so this is going to
be as quick an explanation as I can possibly do because it is a bit
complicated I drive a Tesla Model 3 as you know
before that I had a Tesla Model S; that means that you have a referral code and
if people use your referral code when they buy a Tesla or lease a Tesla they get
a reduction on the cost of that and in return Tesla give me (or whoever owns the
Tesla) certain benefits. They don’t give you money!
Tesla don’t give anyone money, you get things like free super charging or free
autopilot update to your car or you know the different things like that and
eventually through my referral code enough people bought Tesla’s that Tesla
rang up about a year and a half ago to tell me I’ve got a Powerwall for free.
So I was really thrilled! I ring up the installers who did all my wiring and did
the solar panels and the original Powerwall, Joju Solar, and I said “I’ve got
a free Powerwall! Can you put it in?” And they said yeah and then Western
Power Distributors got in touch so that’s the people who distribute the
electricity in the local grid around this area and they said you can’t do
that. The only way I could do it was to have a three-phase upgrade to install
three-phase which is what you would have generally in an industrial unit not in a
house although lots of houses are being built now with three-phase already
connected and in other European countries people have three-phase as
normal anyway it’s quite unusual in this country so I went “Fine, let’s do three-phase!”
Oh my god, it’s gonna cost a fortune. It was not cheap but that will explain the
previous episode we did about the JCB electric digger; that’s why I had to dig
a trench to lay in the cable so that we could have three-phase connected to the
house it was a new cable that was installed eventually it was connected
and now it’s been switched on for the first time and thank goodness it works!
So we’ve got lights in the house, we’ve got three-phase coming in we’ve got new
chargers all sorts of other things which I’ll explain later on so that’s how I
got to this point so yes, I was given a free battery by Tesla
but my goodness that was the most expensive free gift I’ve ever been given! So Chris it’s been a while since we
both stood in this garage talking about my original Powerwall which has been
brilliant. It hasn’t gone wrong, it’s done what it’s meant to do
which is very encouraging but I just for a start, want to thank you
for working out how on earth to do all this because this is an absolute monster, it’s turned into a monster project hasn’t it? What happens when we look to do a Tesla
Powerwall installation is that we’ll make an application to the local grid
operator to see if the network is up to hosting this new equipment and 99
times out of 100, the answer is yes absolutely fine. In your case you
are the one in 100 where actually some kind of reinforcement was required in
order to in order to host all of this. I think it’s up to 11 kilowatts of solar I
can now install because this system can now deal with that kind of power which
is really good. Yeah that’s the advantage of upgrading the supply
into the property, to be able to take more power the other important
change that’s taken place there is that your original supply was what’s called a
‘single-phase supply’ which essentially means that there’s you know one wire
running into the property. You’re now on a ‘three-phase supply’ which
essentially put in three live wires. That obviously increases the capacity of
what we can do here. With the Zappi charger, that’s now a twenty two kilowatt charger, there’s
no way you could have that on a single-phase. Exactly so the
three-phase supply that you’ve got coming in has also allowed you to
upgrade the electric vehicle charger, the Zappi charger, up to a three-phase device
which will allow you to charge the cars even faster than you could before. So I just want to mention that
the Tesla… this is called the the Signature Powerwall, that’s what
it’s called and on the Tesla website it’s signed by Elon Musk… He
doesn’t like me!
He’s not done it has he? It’s personal I think. I’m taking it as a
personal affront he didn’t want to sign mine but then so what we’ve got now in
total storage and is somewhere around 26 kilowatt hours, is that right?
So 13…?
Yup so they’re thirteen point four kilowatt hours each , so you’re
now up to twenty six point eight kilowatt hours of storage capacity and I
think it’s worth relating that I suppose to the size of the solar PV
system that you have here so you’ve got a five-and-a-half kilowatts solar PV
system. In the middle of summer on average that would be producing about
twenty seven and a half kilowatt hours per day. I’ve had a lot of mid-30s…last year in particular. Certainly on a sunny day you would have beyond that but the average summer day would completely fill both of them. I think now we’re
talking November time/middle of winter… I think the Sun is probably only going to produce enough to sort of half fill
one Powerwall and that’s really to do with the you know seasonal
variability of solar in the UK. Obviously some of your viewers in America and
Australia are gonna have a lot more supply.
Yeah, so unfair! The way we’ve sort of
designed this system is essentially to tier up where the solar should go
so when you’re producing solar the first place it goes into the Tesla Powerwall
and it fills those up. Once they’re completely full then any excess will go
into the Zappi car charger and then directly into your car and then if the
Zappi is not plugged in or if the car is full then any excess solar instead of
going back to the grid is actually dumped into your hot water tank through
through what’s called an Eddi device, also made by the same people that
make Zappi, and sort of working in very much the same way so what you’re really
ensuring there is that of all the solar that you generate, you’re not
wasting any, you’re really not spilling anything back to the
grid at all and you’re getting the most usage you possibly can out of the
solar that you’ve got on your roof. I think it’s worth
pointing out that it’s quite an unusual thing in the UK to have three-phase
connection to a house… If you look at the wires running down the street they are three phases. If you go somewhere like Germany they will tap off
all three phases into every single home whereas in the UK we just pick
one at random and wire it into a house and so it will go; phase on this house,
phase two on the next and so on down the street. There’s certainly a lot of talk about new build
houses now having three phase as standard I’ve certainly been reading
things about that that it’s going to become more common here.
Yeah I think it’s
likely to become more common and I think yes certainly the desire to charge
electric vehicles quickly is probably gonna drive more three-phase supplies
going into new build properties in coming years. For existing properties,
obviously they function just fine on single-phase. I don’t want your viewers to think “I got to upgrade my house to
three phases” cuz that’s just not a normal thing. No, that is not normal. So you
certainly can have, like we did for three years; a Powerwall on a
single-phase lot with solar. The big difference I think which is what a lot
of people asked about when we did the first episode is: “What happens if there’s
a power cut and you’ve got a full battery?” and the answer then was you
can’t do anything, you know. We’ve experienced that in the time we’ve
had that battery we’ve probably had two or three power cuts and we have no power
and yet I know the battery has maybe got 10…12 kilowatt hours of juice in it but
we can’t use it. So now we can!
Yep so I think that’s something that Tesla realised is that, and it certainly came out very
clearly on the comment section of the last video that we did with
you was; “You’ve got a full battery in your house and you can’t discharge it when there’s a power cut?”
That’s kind of nuts! The idea that you would put in
a device to ride through a power cut when in the UK we get maybe five minutes
of power cuts a year… …Well, that doesn’t make sense.
But if you’ve got a battery in your house that you’re using to
store solar then why wouldn’t you incorporate that functionality to allow
you to ride through a power cut as well. What Tesla have now done is
they’ve bought out what’s called the Backup Gateway which is a device that
does allow you to run off your batteries when there is a power cut.
Now the reason behind that is again to do with the electrical regulations
within the UK. Broadly what the grid would say is “If there is a power cut on the grid, our guys need to go and work on those wires and we can’t have
people’s solar panels and people’s batteries in their homes potentially
making that grid live while people are working on it”. Most solar householders will will know this that when there’s a power cut their solar inverter will turn
off and historically the batteries would also have to to turn off
as well. The way that they get around this is that the Backup Gateway
is constantly monitoring the voltage on the grid and if it detects that that
drops out of range or drops to zero then there’s a relay in there that physically
disconnects the whole house from the grid. And once you’ve got that
physical disconnection of your property from anything that’s going on out
grid side then you are allowed to run off these batteries behind that switch So Mark now you’re the genius who’s
actually put this system in I’ve been watching you with enormous admiration
because I don’t know you’ve managed to work it all out because it’s pretty
complicated but I’m really impressed with what you’ve done but what we’re
going to try and do now is actually test out what happens when there’s a
power cut. Exactly that. So hopefully we’ll disconnect the switch here, we’ll simulate that we’re going to lose a connection from the grid and then
hopefully behind us here we’ll see the links they may flicker, they may not.
Hopefully they will obviously remain lit And then we’ll be on backup. So we’re going to try it
out now, I’m quite nervous.
Here we go… takes a few seconds… you can hear the switch clicking in and there we go… It should start to operate in a second.
We got a flash then! There!
And we’re on! We have backup from
our Tesla Backup Gateway. So it’s quite interesting, because that is the first time I’ve seen it. So effectively we would probably lose the lights for a couple of seconds in
the house but then it would all come back on. That’s right.
So now we’re running off the battery’s? Solely off the batteries. Wow that is amazing, that is
amazing. Wow! I think I had in my mind you know “Oh you have to have a Backup
Gateway” and I imagined it would be this size like that, it would be this tiny
little switch in the fuse box and I didn’t realise it’s quite a big chunky
thing.
It’s quite a big chunky thing I think they’ve done something very cute
there by making it look like a mini Powerwall but obviously you have to take
the whole electricity supply through your house through here in and out again
and through that switch so there is some you know quite hefty electronics
within the gateway as well as all the sort of smart control and operation
of the batteries that it does as well. You can set the Tesla Powerwall
to charge up with cheap night time electricity so if you’re on a tariff
where you pay more in the day than you do at night which is very very common
for electric vehicle owners then you can top up your batteries with cheap night
time electricity. Obviously you don’t want to fill your batteries up
with cheap night time electricity because you won’t be able to get the
next day’s solar in. So what the Gateway does is it actually
makes a prediction of how much solar it is expecting to put in tomorrow…
Oh I didn’t know that, wow!
…and tops up the rest with the cheap night-time electricity leaving enough
space for what it takes to come along tomorrow.
That is cleverer than… than me!
Obviously it’s not super accurate, it’s not taking in a
weather forecast for example, but it can essentially monitor what it is doing
roughly at that time of year to get to a pretty good approximation of how much it should charge.
So it’s a pretty big step up then, it’s not just just a big switch that means I can have
electricity in a power cut, it’s much more intelligent in that? Yes so that that’s
really less to do with the Gateway and actually more to do with the firmware,
the software that the Gateway is running so anyone with an existing Gateway can set their Powerwall to run in that mode. Once I understood
how to use it, once I was used to using the software my aim was to never
use grid power between four o’clock and eight o’clock at night. You know, to
manage it so that even in the winter I charge these now with off-peak
electricity in the night so I think they switch about half past midnight, they
charge. But what that means is even in the middle of winter when there’s
minimal solar I then try and run the house as much as I can off that but
manage it so that we definitely don’t use it at the peak time which is when
electricity is the most expensive and the dirtiest. And that’s been an amazing
feeling to do that you know that will be easier to do because that’s my argument
is you know I’m definitely in a privileged position at the moment to be
able to afford to have those and to be able to afford to put this in but as
the prices come down you know and more people have batteries you know it
is that it’s a simple argument if there were 20 million homes with even a four
kilowatt hour battery or quite a small one, no solar but they charge them off-peak and
they use them at the peak that peak goes down you know it’s that’s as simple as
that you’re leveling out those ridiculous highs and lows. And when you realise that top peak is the dirtiest and most
expensive electricity we produce it really makes sense in a big way. In fact as we discussed many
times we don’t get that many power cuts but when you do get one if this is the
result it’s brilliant.
Absolutely and if you’ve got solar PV then why not. When the feed-in tariffs were in place
you were paid the feed-in tariffs for what you generated, so any unit of
electricity that you generated you got paid for.
Even if you used it yourself to boil a kettle or whatever.
Anything that was exported back to the grid you got paid
five pence per kilowatt hour for as a flat rate and in most cases
you know it wasn’t even measured they just said well half your electricity is
going back to the grid and you get 5p for that.
Since the removal of the feed-in tariffs that export payment has also disappeared
and is going to be replaced with something called the Smart
Export Guarantee which will be coming in place first of January and
that basically says that different electricity suppliers can offer you
different export tariffs and the idea is to sort of create a market between
electricity suppliers to take any excess solar that you might spill back to
the grid right so it’s a bit more complicated than just giving everyone a
flat 5p you’re actually going to have to shop around and try and find the
best deal you can buy for the electricity that you export. You will
also need a smart meter to be installed to actually measure that exported
electricity accurately. But then there’s a variable one
which follows the wholesale electricity price because that is the thing I always
remember that when I first realized that electricity didn’t always cost the same
the wholesale price you know that and the variations in that go from
effectively sometimes negative to really high and so if you can sell electricity
at the peak yeah I’m thinking if you can buy it when it’s cheap I think that’s
perhaps where we’re edging towards so I think the majority of suppliers under
the smart export guarantee are going to be offering a flat rate but I think you
will see some of the smaller players doing
interesting things around time of day pricing yeah we’re beginning to see you
know people charging different prices at different times a day or for importing
electricity and we’ll probably also see them doing the same for for exporting
and electricity so now on the system we’ve got now if it’s a this happened in
the middle of a sunny day in the summer and you had a power cut would we still
be getting with the inverter still be running so we’d still be able to take
this solar in – absolutely so the inverter would operate also right and so
the battery would it would obviously use up a certain amount of energy and then
once it’s got to about 30% and the battery the inverter would then kick in
I see all right so then it would start to either recharge the battery will run
that’s right okay I think that’s really the next stage for domestic battery
evolution if you like the moment they’re there to allow householders to capture
their own solar and use it for themselves the next stage will be for
householders to capture the solar and use it for the benefit of the wider grid
and that’s only going to be facilitated by having these smart tariffs in place
what people will find difficult is I think that you know the idea that they
might get paid five or six P for the electricity that they put out to the
grid but they know that they buy in again at fifteen or twenty pence.
Yeah people will be looking at that and going well why why is there that difference
the answer that is is that you know the five six P is is the the value of the
electricity itself the value of the electricity is it might be produced by a
gas five year power station or an offshore wind turbine or so forth and
the rest of your bill is things like paying for the National Grid infrastructure.
The substations, the wires the pylons… paying for the metering paying
for the billing and obviously the utility profits in there plus any sorts
of green legislation so the moment we’re seeing all of those costs bundled onto
your import price but don’t you don’t get that much that when you export your
grid is so new that price differential between
the price you pay for electricity to import it versus the price you get to
export it you know that is where the real value of the battery comes in so that’s all we’ve got time for for
this episode of flinch I hope you enjoyed it I hope you learnt how this
technology is developing how it’s you know it’s still expensive it’s still
being developed but you know the Tesla gateway the backup gate has only been
out since April this is very new stuff and all I’ve got to do really now is
make sure that my signature power wall which is what I was told signature with
that word in the title it’s going to have a signature so thank you very much
for watching, please do subscribe to Fully Charged. About 75% of people who watch
Fully Charged aren’t subscribed which is brilliant because a lot of people watch
it but you could subscribe then you won’t miss any of our juicy lumpy
organic goodness that we produce all the time. Please do have a look at the
patreon link that is beneath this video let me assure you that that money that
we receive from patreon is not going towards paying for Robert’s Powerwall
that’s not happening! And please do join us again and as always if you have been
thank you for watching.
Right that’s it… This is how he signs it. Look at that
that’s it…. Signature Powerwall, nice!

100 comments on “Can you run your house on a battery? Tesla Powerwall 2 (Founders Series) & Tesla Backup Gateway 2

  1. fullychargedshow Post author

    In response to your questions about the requirement for 3-phase electricity supply, Dr. Chris gave his thoughts:
    "The grid operators look at the worst possible case for export in their calculations. They look at 5.5kW of solar being produced, with 10kW of power from the batteries, and no loads, and see if the grid can handle this 15.5kW of export (in this case they found it couldn't on 1-phase).  In real life, you wouldn’t see the solar producing its maximum and the batteries fully discharging at the same time, so the grid operators are being very cautious here.  Indeed the batteries are designed to discharge such that no electricity goes back to the grid!  The grid connection regulations were initially set up for back-up generators; if Robert had a 15kW diesel generator in his home these rules would make sense.  But they do seem a bit dated to work for modern solar/battery systems."

    Reply
  2. jamesyoungmw Post author

    i don't understand why with the battery, why can't you split the home ciruits, such as all the lights, and some rooms completely off the battery and solar, and leave some run on Utility, so you don't have to upgrade to 3 phrases?

    Reply
  3. jamesyoungmw Post author

    the battery kick in is a bit too slow. if you were using a desktop computer you were already cut out.

    Reply
  4. TheArbusTree Post author

    crazy you got no 3 phases to your house? First time I hear, nice to know since I study electrical Engineering, thought it is everywhere like in germany 3 Phases to homes.

    Reply
  5. Rob Hunter Post author

    Is there a more generic name for the Tesla "Gateway"? I'm trying to find something to do exactly this but without the tesla part.

    Reply
  6. DOOM SHIP Post author

    just my opinion. the only thing new here is that Tesla sign that will be a huge deal for investing as a brand everything else is old news

    Reply
  7. Foppo Leeuwerke Post author

    Electricity charges are a rip off.System like this need to be affordable for every household it is the future can't come soon enough.

    Reply
  8. Sammy D Post author

    You probably had a big enough cable to put 15 kw back anyway. And with limitation you didn't need to even tell the company you are putting another battery.

    Reply
  9. Fredrik Höglund Post author

    Dont´t you have three fase connections to households in the UK? How do you run all your aplliances in a safe way?

    Reply
  10. Sander Post author

    In the Netherlands this gimmick is not necessary since the power you generate with your solar panels goes directly to the grid. Each quarter they look at your usage and subtract the power you generated. And voila you either pay the remaining usage or get a small sum back for surplus power.

    Reply
  11. Inachu Ikimasho Post author

    Can you run your house on a battery? Not in California……
    When grid goes down and you are not feeding back into the grid during an outage then the local electrical municipality will get you fined

    Reply
  12. Jamie A Post author

    Imagine if Tesla Solar Roof/Solar Wall and Powerwall came as a standard fixture with EVERY house or flat up and down the UK!

    Reply
  13. Trond Zaphirax Post author

    If I want to install a battery in my house, I would run everything from the battery, using solar and power from the grid only as a way to recharge the battery. If you're mostly running the house from the grid, and use the battery as a backup if the power cuts, then you're left with all the annoyances a power cut usually do, such as rebooting computers, resetting clocks, etc.

    Reply
  14. Anarkist2k8 Post author

    Wow, that failover time to transition to battery is terrible. I expected it to be like UPS and not at all like the delay in a diesel generator starting.

    Reply
  15. Andrew Spence Post author

    You would likely need to use the batterys for 20 years to eliminate the carbon footprint from making the batterys , all this solar nonsense won't help a thing , the electric providers are producing as much as ever , and making a fortune over charging us all .

    Reply
  16. Hostel Richmond Post author

    What happens to roof units from a hail storm?
    Or, New Years Eve when my urban neighborhood erupts in automatic weapon's fire directed skyward?

    Reply
  17. Gee purrs Post author

    Ya ok, until you realize it will take 20 yrs just to get your money back. And that if that money would have been invested you could have retired 10 years sooner.

    Reply
  18. Traveling Flamingo Post author

    The most expensive free gift lol hilarious.
    Just wondering. Why did you switch from a Model S to a Model 3?

    Reply
  19. taha1j1 Post author

    Worth remembering that you use more power charging, then discharging, a battery than you would if you just used that power directly. With lithium ion battery banks it's usually about 1.5x as much, I think Tesla Powerwall's are significantly more efficient in their defence.

    Reply
  20. Merlin5by5 Post author

    Tesla solar psychotics, trying to invent a technology. This whole solar array could be replaced by a $500 gas generator.

    Reply
  21. Virgle DeBord Post author

    We already run our houses on batteries connected to power lines that feed our breaker box owned by SMUD and PGnE or anotherwords, THE FEDS aka Feddies aka Human Alien Hybrids that don't want you to know about outer space because their alien overlords don't want to have to NUKE EARTH like they did Mars. Tesla is the next step in human evolution. The Tesla Super Battery is simplifying the entire power grid PROBLEM, Musk even has solar panels you all SHOULD PURCHASE IMMEDIATELY. Please stop ruining the planet by burning coal or using nuclear powerplants that have failed the entirety of humanity when they go critical. Please listen to Great Greta and Taylor Wilson about global warming and CONTAINED Nuclear Reactor tech.

    Reply
  22. Anne D'Anotha-Thing Post author

    Thanks for sharing this! It's good to hear others' experiences. We are rural and have quite a few power cuts, which is why we chose the Tesla battery with our PV system. There have been 7 cuts since installation in September and the battery has had to provide an hour, in total, of backup power. We are computer dependent so continuity is important to us! Only once did we notice a cut happening, because an internal circuit tripped out. Usually the most warning is a flicker of the lights. 
    The other feature that I really like on the battery is 'Stormwatch', which automatically fills the battery ahead of an event like Storm Ciara or Dennis and does not discharge until the danger is over. 
    Although elements of the system can be installed outside, it is still rather large and will take up a lot of wall space. It is also not silent, so bear in mind when choosing a location. These are early days for storage, but batteries are sophisticated and worth considering if you have the space and the cash. (On the other hand, I've come across someone who uses old milk-float batteries for an off-grid life.)

    Reply
  23. In The Study Post author

    I'm a little sad that there's a switching time. I get why, but from a UX perspective it's a shame. This kind of setup mandates that any kind of advanced technology still needs independent backup – Router, Access points, home server, games consoles, media players, whatever.

    So the "high-technology" homes that have things like a Powerwall, are still going to need to put a chunky UPS in their closet.

    Reply
  24. Jason Chang Post author

    You should go back to school to learn math, so you’ll know that what you had was cheaper than what you got!

    Reply
  25. Zaphods BlueCar Post author

    That's a really slow power-fail switchover – mine does it in milliseconds – most times you can't tell when the Powerwall has kicked in…

    Reply
  26. clifford dicarlo Post author

    Does the inverter produce pure sine wave AC electricity or does it produce "modified" sine wave AC electricity?

    Reply
  27. Kilian Funke Post author

    Tesla is one of my favorite companies to watch out for, especially with the supercaps aquisition of Maxwell and the rumors around the Solid state battery. However, for a house battery going on Lithium Ions isn't what "clean energy" is about. Because we dont need to safe weight or room specificall for that application it would be nice if you covered an episode on a sodium Ion battery built for a house, such as greenrock. My parents actually just installed one in their new house. I haven't seen it personally but I would love to see what those are capable of.
    Most importantly, can you cross over systems with the Tesla grid lock with systems like that…

    Reply
  28. Trista Fravel Post author

    I'd like some costs associated with this plz – in theory, being self sufficient with your own power should be a benefit BUT a rig like this + installation + having to upgrade to 3phase + equipment maintenance possibly seems extremely expensive unless maybe you own a few electric cars (I don't know how much it costs to charge Teslas at the charge stations) … This to me looks like an expensive esoteric hobby for well to do people who have grown tired of collecting exotic cars.

    In America 3phase is considered an industrial voltage so it's expensive AND in addition to being billed for the KWH usage, you also get charged an "on demand" fee (because of the industrial nature of 3phase it's assumed you're starting and stopping motors which pull a lot of line current when the motors start up)

    Btw, the time it takes for your system to switch to battery power when the line drops out is totally unacceptable.

    Reply
  29. Robert Ferguson Post author

    How many centuries till it recoups the installation cost? I can really see the masses going for this kind of thing.

    Reply
  30. Jonathan Post author

    Great video Robert. The only issue I can see is that you won't be able to access SEG or TOU tariffs as you can't have a smart meter on a 3-phase supply. I'm sure you were aware of this before you switched. Why couldn't you have used a G99 compliant export limitation system? Does the PW2 not do export limitation? Would be interested to hear why this wasn't an option.

    Reply
  31. NameHidden ForPrivacy Post author

    It would have been nice if you actually answered the question you asked on the title. I wasted 20 minutes of my life’s precious time in this and got ZERO answers.

    Click bait has been down voted.

    Reply
  32. Superpose MEDIA Post author

    Nikola Tesla was a genius. He needed a the size of a cigar box to get energy from the difference between earth and air. Now you show a delitant technique. This all has nothing to do with Tesla's real work. But it is great, for people who can't think over the given borders. A inventor or genius has no borders for thinking in his head. The Powerwall is no worth the paint on it. But it will be a success because of the (un-)knowlage of the masses. .. Don't take it personal…

    Reply
  33. chiwike vincent Post author

    I really dont get it….could someone more enlightened explain why i would still need anything to do with the grid, when i have solar panels on my roof? Isnt the point of installing the solar and battery to avoid using grid power?

    Reply
  34. Bruce Farber Post author

    I have 3 Powerwalls, single phase grid power, 12 kW peak solar. It all works great. I have my batteries set to 25% retention for power outage backup. My batteries fill up by mid day (25% to 100%, 3 batteries), the rest of the solar goes into the grid until the sun goes down (I receive a credit on my bill), then I run off my batteries throughout the evening and night. When grid power goes off, I have NO FLICKER or pause. My gateway switch is milliseconds, so even my digital clocks do not need resetting. The only way I know my grid power has turned off is when the gateway sends me a text on my phone. This setup in the video seems quite clunky and house power fails for several seconds before going to battery power. What a difference.

    Reply
  35. Markus Quatember Post author

    Strange – How you operate your Cooking Equipment with just 1 Phase? You need a MASSIVE Cable going to the Oven / Cooking device

    Reply
  36. Tony Kitching Post author

    Looks great and super high tech. But it will be so prohibitive in terms of cost to install, it will only be a dream for me. Still enjoy the video though.

    Reply
  37. Jonathon Hoggarth Post author

    Hi; interesting you upgraded your main incoming supply, I am looking to to do the same do I was wondering if you could answer a few questions, firstly is the equipment all g99 type tested? What is the incoming supply cable of taking now, I.e is it a 250 amp fuse? How much did it cost you for the upgrades to your property on the network? Have you seen much of a difference to the cost for the standard daily charge?

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  38. Martyn Holder Post author

    very interesting video, I have batteries in my roof space, you did not say what happens when the power comes back on, hospitals have always been able to power up there back up generator then when power is reinstalled it goes back to the grid

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  39. Steve Kara Post author

    What? 3 phase is not common? I've got 3 phase in my fathers house build back in 1982 in the small (11k population) but very famous, city of Sparta, Greece.

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  40. Terry Digby Post author

    All that time, energy, and money to place beautifully designed products, on a dirty grey cinder block wall? Why not at least paint it first?

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  41. Tshepo Masilo Post author

    The video was absolutely fantastic, I just want to know how does it cost to purchase a Tesla Powerwall and if I place an order do you have recommended installers in South Africa?

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  42. rhbofwcc Post author

    You suggested it would be a good idea if a lot of people could run on battery during peak rate time. When they introduced off peak rates in Ontario Canada and many people changed their timing, the electricity provider increased off peak prices because they weren't making enough money.

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  43. Nevi Gabriel Post author

    And what might this cost the ordinary lil mom and pop worker household?? It looks great for someone that can afford numerous THOUSANDS…hmm..5mins a year 😢…South Africa has 250-500+ minutes a day in places.

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  44. David Kerpan Post author

    Why are they sitting on the concrete seems like you would have them up in a higher position for water safety

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  45. Pilbromatic Post author

    Wow, Tesla sucks! I build telecommunications solar arrays for a living, and that few second drop out is a joke! Couldn't believe what I was watching.

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  46. Wim Koppenol Post author

    WHY??? put 3 phase from utility to property????? The solar array charges the batteries and the batteries in turn provide the inverters with DC to run AC appliances, if any appliance has 3 phase requirements like the car charging stations etc, well then add DC to 3 phase inverters to system and supply. End of story ? Cause logically who would pay installations cost of 3 phase if you can make it on your own. Specially if you have 26kwh of tesla batteries available to be charged you by the PV's> im stumped also did not see any requirements for 3 phase on tesla batteries charge needs.

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  47. Jonathan Thompstone Post author

    The powerwalls are single phase. So are they just connected to 2 of the 3 phases?

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  48. LandscapeInMotion Post author

    How many minutes will the battery typically last once the relay switches off mains power?

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  49. Rob Hobbo Post author

    It had been at the back of my mind for a while, what had been said in this video about not being able to have a fast charger at your home without 3 phase power. Then I was watching a YouTube video the other day about flywheels as energy storage. Apparently you can charge them up slow and discharge them fast. So I had a daft Idea: Why not charge one up slowly, at your house during the day and then use it to charge your car up quickly when you get home. Anyway I thought: I can't be the only one to think of this, so I did a search on YouTube for flywheel EV charger and there was at least one video exploring the Idea. To be honest I didn't watch all of it because I was getting my nipper ready for school and it looked a bit technical but maybe it's not such a bad Idea after all.

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  50. Josh Post author

    So the Backup Gateway relay trips whenever there’s an outage, which then allows you to use your PowerWall to power your house. So what’s the process for safely resetting the Backup Gateway Relay? Obviously you wouldn’t be able to reset it during an outage, that would defeat the whole purpose of the Backup Gateway. But how do you know when to reset the relay, and I assume that the Gateway doesn’t reset the relay by itself?

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  51. Josh Post author

    Apparently they managed to make your main breaker switch control my internet as well. As soon as you flipped your breaker to test the system, my internet cut out 🤣

    Reply

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