Nissan Introduces Its Own Powerwall: “xStorage” From €4,000 ($4,500 USD) Installed

2 years ago by Jay Cole 77

Nissan Debuts xStorage From Nissan Introduces Its Own Powerwall: "xStorage" From €4,000 ($4,500USD) Installed

Nissan Debuts xStorage From Nissan Introduces Its Own Powerwall: “xStorage” From €4,000 ($4,500USD) Installed

Nissan has taken a page out of Tesla Energy’s playbook by introducing its own Home energy storage solution, called the “xStorage” in Europe.

Nissan xStorage Using Used EV Batteries

Nissan xStorage Using Used EV Batteries

Where this differs from several other ESS systems that are now coming to market is that the Nissan solution takes advantage of second hand batteries from Nissan electric vehicles (the LEAF and e-NV200).

For this endeavor Nissan is not going alone, it has signed up power management player Eaton to help with the project.

The company says it is designed to be the “most affordable” complete system on the market today.

The unit is available to pre-order in Europe from September of this year, and Nissan says the “xStorage” solution will give consumers the power to control the how and when they use energy at home.

“Connected to residential power supply or renewable energy sources such as solar panels, the unit can save customers money on their utility bills by charging up when renewable energy is available or energy is cheaper (e.g. during the night) and releasing that stored energy when demand and costs are high.

If a home is equipped with solar technology, this means that consumers can power their homes using clean energy stored in their xStorage system, and be rewarded financially for doing so by avoiding expensive daytime energy tariffs.”

Ok, who the flip staged this media image?

Ok, who the flip staged this media image?

Nissan notes the system also serves as the “ultimate back-up solution” to owners for whenever the grid goes down or some under strain.  In some locations where permitted the customer can even generate revenues for themselves by selling stored energy back to the grid when costs are higher. 

The xStorage Consists Of 12 Battery Modules

The xStorage Consists Of 12 Battery Modules

“The xStorage unit will be the first device of its kind in the market to provide a fully integrated energy storage solution for homeowners. This means, unlike other storage devices, this factory made integrated unit ensures safety and performance when storing and distributing clean power to consumers. Once set-up by a certified installer, it is ready to go, giving consumers the ability to plug in and power up easily. It will also have smartphone connectivity to allow consumers to flick between energy sources at the touch of a button.”

The unit is nominally rated at 4.2 kWh and the installed price is  €4,000/£3200 ($4,500 USD), which represents a fairly decent bargain as small ESS system installations often run more than the cost of the unit itself.  As of now plans for xStorage only involve Europe.

No further specs were released on the announcement (we will of course update as soon as they are), but we can confirm that 12 used EV modules make up the storage capacity for each xStorage unit.  When new, 12 modules are rated at 6 kWh; so the cells used in the system look, on average, to be degraded about a maximum of 25-30% (over 70% of original capacity)…typically the level where degradation has slowed.

Cyrille Brisson, Vice President Marketing, Eaton Electrical EMEA said:

“The collaborative development between Eaton and Nissan enabled us to optimize development and production costs and deliver a well-integrated offer to consumers. Our system will be provided to end-users completely ready to use, with all required elements including cabling and installation by a certified professional, at a starting price of €4,000 (£3200) for 4.2KWh nominal. Our policy is to avoid hidden extra costs and achieve a lower total cost of ownership than other major offers already announced.

Nissan says that the xStorage system “marks the start of a longer-term commitment by Nissan and Eaton to widen the portfolio of energy storage solutions available to both private and commercial customers.”

Nissan and Eaton state they expect to sell more than 100,000 xStorage units within the next five years.

Hat tip to Michael B!

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77 responses to "Nissan Introduces Its Own Powerwall: “xStorage” From €4,000 ($4,500 USD) Installed"

  1. evcarnut says:

    So basically you are buying a Used Product., In “BRAND NEW PACKAGING”…That’s a Good Deal for NISSAN………I’ll stick with Tesla…thx

    1. tftf says:

      Evcarnut should finally change his/her name to Teslanut.

      1. evcarnut says:

        l O l …Did I leave some clues ..? I like Tesla The best because of the no charge charging & the network is expanding , to me that is the biggest reason..

        1. tftf says:

          Nothing is “free” in life, at least if it’s a for-profit organization selling you something.

          You will pay for charging one way or another – or Tesla will go out of business sooner or later.

          Business 101. Quite simple.

          1. jimstack007 says:

            Tesla doesn’t waste money of advertising since they are SO popular. The FREE Super Charging is the best real life example instead of a stale AD. It pays for itself.

            1. Keith D says:

              Just wait until all of the Model 3 units are delivered, and these owners want to use the Tesla Supercharger network. There will be so many people all trying to recharge for free, that Tesla will need to either switch to a charging plan where you have to pay.

              1. Cerio says:

                Model 3 has never been said to come with free supercharging. It will, however, be equipped with supercarging capability. So the charging fee for Model 3 owners along with waiting times might and most certainly will balance capacity and demand.

          2. evcarnut says:

            I agree ,I was always aware That there is No such thing as a free lunch! It’s worked in the price somewhere somehow I KNOW..lol..But it is a huge comfort & convenience when going on trips, knowing they are out there & growing so it makes it a more secure & worry free ownership …Unlike the others that sell you an EV car & send you on your way , on your own to figure out the rest of it ..

        2. pjwood1 says:

          The best value, by far, is ripping apart an EV battery and DIY. Using just peak / off-peak arbitrage, it would take 27 years for payback on Nissan’s “bargain” $1,000/kwh solution, assuming a 10 cent/kwh spread.

          Why not buy a used Leaf, for <10k, split out its ~27kwh, where you're starting costs are $370, instead? And 4Kwh??? If the average household, using 30kwh a day, can't easily shift more than half their load to off-peak, than why stop at 4kwh?

          If I were unemployed, this would be my cottage industry. Soon lithium will never be as cheap, as what we'll find on the used market. $1,000/kwh is another comical "me too".

          1. mr. M says:

            The average household in europe is actually below 10kWh/day. Half of the day the PV generates current, so the battery can easily manage the night shift.

          2. Pushmi-Pullyu says:

            That’s certainly do-able, but you have to have a pretty high level of electrical engineering DIY skill, to convert a BEV’s li-ion battery pack to stationary home storage use. You must either buy a BMS (Battery Management System), or else be able to hack the software in the pack’s existing BMS… which would require a very high level of skill indeed.

            More details in this older InsideEVs article on the subject:

            http://insideevs.com/purchasing-nissan-leaf-battery-junk-yard-video/

    2. Nick says:

      Using used cells for this is genius.

      The EV cells are way over speced for use in this application when new.

      Once they’ve degraded to the point where they no longer function in an EV, this will keep them out of a landfill as a super cheap home energy storage product.

      1. Priusmaniac says:

        I also think using used cells is a good idea; it makes the storage cheaper and gives additional useful life. A car needs the very best cells because of the energy compacity requirement, but not a home storage where volume is less important and weight doesn’t matter at all.
        Home storage can still be made with new cells for a faster start but in the long run used cells will offer better deals. Tesla is using cells that are likely not new either but rather coming from returned battery packs where bad cells are recycled and where the other good ones are reused. They likely have a machine that test the cells automatically one by one and orient them recycling or reuse. Even brand new cells probably go through such a machine as well, with the perfect ones going into car packs and the lesser ones going directly to reuse. Shorted ones or bad ones going to the bin for materials recycling.

      2. jerryd says:

        Using used cells is smart but if they are down 30%, then they are worth much less yet they are charging
        1k/kwhr.
        These Leaf cells are the worst of all the EV cells and why they are only 70% capacity. Not a bargain.
        In most places they need to be under $200/kwhr to be viable.
        I buy 90%+ capacity VOLT PACKS for under $150/kwhr is a far better deal.
        A good business model could be making electronic packages that just plug into a used EV pack to convert it to home use.
        Not sure where you think lifepo4 is cheaper or better that EV cells as just not true, not even of the early Leaf cells.

        1. Deven Foskey says:

          That is the installed cost. Read the article.

          1. jerryd says:

            Don’t care Deven as it still costs way too much.
            An install only costs $200 to wire in making your point just silly.

  2. Carticle Pannon says:

    Imagine if they somehow allowed DC fast charging via this product, all of a sudden, this becomes a very interesting product.

    1. Andrew says:

      Wouldn’t a person need somewhere around 1.5-3x the battery capacity of the car being charged just to drive the DCFC? IIRC batteries don’t like being hard discharged.

      1. Terawatt says:

        Think dude! When you use maximum power in a car, do you think the battery isn’t delivering that power??

        My Leaf has a max power of 80 kW, but can be charged only at up to 50 kW. But it’s not necessarily the pack itself that determines these limits. Nissan has said the maximum power that can be delivered by the 24 kWh pack is 200 kW, and I believe the alternator is the bottleneck.

        I don’t know how much power the battery can deliver for how long when stationary and uncooled, but my guess is the same as it can accept.

        So you wouldn’t need a much bigger pack to charge fast. Even this small one could perhaps handle 40 kW. But obviously it could never deliver more than its capacity before turning into the same trickle it is receiving, so you’d ideally want it to be as big as the car’s pack.

        Still, being able to quickly put in a few kWh could be very handy in some situations.

        I wonder if Tesla had this scenario in mind. What is the max current you can draw from Powerwall? I’ve only got a 16A 240V outlet, and the condominium wants me to draw just 10A (citing increased fire risk at 16A, which is real although still very low). If Powerwall lets me draw 32A or more it might be worth CV hindsight a wall charger.

        1. Henry says:

          Lithium batteries usually only accept a charge rate of about 1C or 1 times their capacity. So a 24 KWh battery can be charged at 24KWh without signifacant cell degradation or heat generation. When you start to talk about 2C+ you start to degrade the batteries.

          Though yes there are batteries that can accept higher charge rates, to my knowledge they aren’t used in current EV’s.

          1. Jeremy says:

            Actually the batteries used in most EVs can be charged at a little over 2C. That’s why the DC fast chargers can bring them to near full charge in 20-30 minutes. The LEAF battery can be charged at 50 kW and it’s a 24 kWh battery. 50 kW / 24 kWh = 2.1C

            But I think the previous point in this thread is still valid. Yes you could theoretically “fast charge” your LEAF with one of these batteries, but is there really any value in doing that with only 4kWh?

            The LEAF battery can be discharged at up to 10C for very short periods, but it can’t sustain that indefinitely without serious heating. Generally the max “sustained” discharge is around 2-3C. Fully depleting any battery in under 20-30 minutes creates a tremendous amount of heat. So high C rates can be done for short periods, but sustained high C rates can do serious damage to cells. With a 4kWh battery, that means it would take you about 20-30 minutes to add 4kWh of power to your LEAF, which is barely faster than just using the standard on board 6.6kW charger. If you had a few more of these batteries it would be a much more viable option, but generally using a 4 kWh battery to charge a 24-30 kWh battery doesn’t make much sense.

        2. jerryd says:

          Great post Terawatt!
          I intend to fast charge mine with a DC generator to cut engine time, costs and increase efficiency 2-6times vs charging from an ac generator and charger.
          The same unit is also my EV range extender.

        3. peter says:

          The maximum power output of the powerwall is 3.3kW or 9.5A at the DC level. When inverted to 240VAC around 14A.

          The Leaf’s charging rate is limited by the charger. The cells are 33Ah. Dependent upon how the 12 modules are wired, the battery could be 132Ah. 1C would be 132A.
          (Tesla’s 85kWh battery is ~270Ah)
          Nissan’s cells are high discharge rate cells, so will easily meet any domestic charge/discharge rate.
          There is also the possibility of charging more than once a day, which would soon wear out many home batteries using commercial grade cells.

  3. sven says:

    By “complete system,” “fully integrated energy storage solution,” and “completely ready to use, with all required elements” does Nissan mean that xStorage includes an inverter?

    1. Alonso Perez says:

      Almost certainly.

      However what is missing here is whether the product is modular like the Powerwall, or if they only are designed to be deployed in single unit mode.

      1. wavelet says:

        True, although it would be extremely limiting if it wasn’t modular — that would mean it was only usable as a kind of limited UPS, and I doubt that the intent.

  4. John Hollenberg says:

    With the way Nissan has (under) designed the Leaf, there should be plenty of old batteries to go around. I live in Los Angeles and have lost 26% of my capacity in just under 5 years–and I am doing better than most who live in this area.

    1. Nick says:

      Yep, I’ve lost 20% off my 2011 LEAF in the PNW at 71k miles.

    2. Murrysville EV says:

      My 12 Leaf lost 15% in 3 years, 27k miles, and the gas gauge was always wrong.

      I can’t believe Nissan has the nerve to sell a new product with degraded batteries in it.

      My next EV won’t be a Nissan.

      1. Djoni says:

        Just lost my first bar tree days ago.
        84% left of MY Leaf 2012 after 106 000 kilometers done on it.
        It’s just sad that Nissan haven’t yet come with an offer to their trailblazing customer.
        Using a degraded pack in exchange of this energy storage might be interesting for some but in my case I would prefer an accessible upgrade with much larger capacity battery.

      2. Mathias says:

        “My 12 Leaf lost 15% in 3 years, 27k miles”

        I love my 2014 Leaf but I won’t buy another EV with a small battery pack.

      3. JohnLars says:

        I lost 2 bars after 27K miles in San Diego. Disappointing.

  5. Speculawyer says:

    This is great! Very happy to see the old cells put to use in an application that does not require a high energy density.

    But that price is damn high for 1/5 of a LEAF battery.

    1. Speculawyer says:

      Oh…it is 1/4 of a LEAF battery.

      And it includes installation. Does it also include a bidirectional inverter?

      1. evXpert says:

        It has a bidirectional inverter. That’s what fully integrated solution means. And with the installation is a rather cheap price.

      2. Peter says:

        “Oh…it is 1/4 of a LEAF battery.”

        1/4 of a worn out LEAF battery.

  6. Holger says:

    Yeah – it is a start… get into the business and figure out what sells.

  7. markd says:

    How many hours would this power a home? Is it strong enough to power your forced air furnace?

  8. Turbofroggy says:

    Ah yes Eaton, the company who can’t even make an EVSE that works properly with the Leaf.

  9. Sloan says:

    It resembles something you could find on the Starship Enterprise.

  10. G2 says:

    Since you can get a new 24kwh battery for a LEAF ($5500), and a ‘retired’ 70% battery would have 16kwh, why wouldn’t one keep the old battery and convert it to be your home storage? Seems much cheaper….

    1. Kosee says:

      That deal includes giving the old battery back to nissan. So the price is 5500 plus old battery. Nissan needs to do something with those old batteries so apparently this is it.

      1. jerryd says:

        The Leafs go for about $4k used but I wouldn’t buy a southern early
        Leaf.
        Vs Volt packs are going about $2K.
        Volt packs are only good at 48vdc multiples vs Leaf can be made in 24vdc multiples as 8vdc/module.

  11. DonC says:

    I’m thinking the article means to say the cells are 30% degraded not 70% degraded. The numbers are there, so not a huge deal, but this could be misconstrued.

    I’d guess the cells would only be degraded 20% since that’s the usual rule for when the cells are EOL.

    1. Jay Cole says:

      Yes whoops, should read a maximum of 30% down to 70%, (=

      /fixed, thanks

  12. Jouni Valkonen says:

    What is the operating voltage of this battery?

    It should be around 350 volts so that it can be seamlessly DC coupled with solar array. And no need for separate battery inverter.

    Currently only Tesla Powerwall and Fronius Energy Package are high voltage batteries.

    1. jerryd says:

      A full pack is and near perfect for string inverters.
      If one can hack the EV bms, etc, it can work even better at less cost.

      1. Jouni Valkonen says:

        Indeed, when electric car is DC coupled to Fronius Symo Hybrid inverter, electric car can be used as backup power, or as normal bidirectional substitute for high voltage battery. Investment needs are mere software update, no hardware upgrade required.

        Nissan will equip its electric cars with bidirectional charger also outside Japan. Tesla does not allow it yet, but it is just around the corner.

        1. jerryd says:

          If they do go v2g stock I can see people buying used Leafs and just using them for home power.
          They made back in 2000 and Ford ERanger that had v2g stock. They need to be converted to lithium but the only way to get an EV pickup now.
          Or buy the ACPROPULSION v2g inverters it used.

  13. Pushmi-Pullyu says:

    Wonderful to see a product using recycled EV batteries! I hope we see a lot more “second life” use of used li-ion batteries.

    I look forward to seeing more about xStorage. Since Tesla priced the PowerWall and PowerPack so high, I hope that Nissan can undercut their prices. Using used batteries will help!

  14. Alan says:

    Does the level of battery degradation taper off after a certain % or fall off a cliff ?

    It’s hard to know how much life the battery will have for home energy storage and how cost effective this will be.

    The product would have to last at the very least 10 years to be worth even considering at these prices.

    1. Pushmi-Pullyu says:

      Degradation due to cycling is an inverse exponential curve. That is, the dropoff is larger when newer, and gets less over time. Since this is using used batteries, I’d expect the loss of capacity over time to be fairly flat.

      However, the other concern is the “shelf life”. Once batteries reach the end of that period, my understanding is that the dropoff is rather steep. And unfortunately, since nobody was mass producing EVs before December 2010, we don’t know what the shelf life is. Furthermore, since cell makers keep fiddling with the chemistry, the shelf life of batteries made in 2010 may not be the same as those made today.

      Will they last 10 years? Maybe… but unfortunately, maybe not. At this point, it’s rather a pig in a poke.

  15. Bob says:

    Where does these used batteries come from?
    I have heard of the option to upgrade to a new battery for 5.500,- dollars, but never heard about anyone doing it…
    That makes me confused of the 100.000 batteries they plan to sell – that would require around 1/4 of all Leaf sold in Europe to have a degraded battery changed (warranty or buy).

    1. toyotomi says:

      This could imply that Nissan would buy buck our used battery pack from Leaf at much better price, so that every owner can get a replacement battery way cheaper than ever!

      Other than this way, how Nissan will collect 25,000 of used batteries in 5-yr??

  16. Alex says:

    Thats cool and clever, price is hot. Tesla Powerwall i saw much more expensive in Europe than launched, i cancled.

  17. Just_Chris says:

    Nice, we are going to see a lot more of this sort of thing in the future. To make a lot of ev’s you need to make a lot of high performance batteries. That means a lot of “seconds” (batteries that don’t quite meet the spec in the first place for an ev) and a lot of “thirds” (batteries that have been used, are still ok but not good enough to go back in the car).

    Great to see these becoming a reality. The batteries that are no good will be recycled, as I understand it, recycling a lot of the same battery is essential economically neutral ie not a hugely profitable thing but not something you’ll loose money doing.

  18. Terawatt says:

    This second life for EV batteries is a very important reason why EVs do as lot for sustainable energy in general, not just for the transport sector. But at a thousand euros per kWh I’m not very impressed.

    Towards the end of next decade the currently tiny trickle of used batteries will begin to turn into a flood, enabling renewable to become the dominant energy source.

  19. Pete says:

    Why should they be degraded to 70 %, I don’t think so.
    They only make a net kWh specification, they guarantee 4,2 kWh usable but maybe battery in the system could give 5 kWh or 5,5 kWh and so on.

    1. DonC says:

      If it’s 1/4 of the pack then you’d hope it would be higher than 4.2 kWh. The other good thing is that you’re off the steep part of the cycle/degradation curve.

  20. Someone out there says:

    Quite expensive unfortunately. A much smaller pack than the Powerwall yet significantly more costly. I guess it’s compensated by having it’s own inverter and installation included but it’s still too much for such a small capacity unit. I think it would have made more sense to make it twice as big for a small extra. 4 kWh can barely run a fridge throughout the night.

    1. Alan says:

      That’s some fridge you have there !

      1. Someone out there says:

        500 watt for 8 hours isn’t exactly a lot. While the fridge alone might not draw 500 watts continuously a normal household have plenty of other devices wanting power as well.

        1. Alan says:

          500 watt for 8 hours = 4kwh X 3 X 365 = 4380 kWh per annum = Ouch !

          That’s about 3 times the most modern efficient Fridge Freezers.

          I have an AEG which is about 6 years old and it’s uses about half yours !

        2. VazzedUp says:

          500watt is not continuous, fridges only run intermittently, particularly overnight.
          A quick web check shows that most fridges use only about 500-900kWh per year.

    2. Pete says:

      Tesla powerwall is in Europa about 7000 €, without installation! You must calculate double for powerwall.
      Its very interesting price especially because of this:
      “with all required elements including cabling and installation by a certified professional, at a starting price of €4,000 (£3200) for 4.2KWh nominal. “

    3. DonC says:

      I’d agree that for the US this is small, but for Europe it’s likely good for a day. Keep in mind that you’re using it for backup.

      Also agree you’re overstating the fridge draw unless you have one of those huge walk in types that you’d use in a restaurant. But some people do go overboard on their appliances.

  21. Someone out there says:

    The way I see it, using automotive batteries only makes sense if they are used and therefore cheap. Otherwise, using LiFePO4 would make a ton more sense. LiFePO4 are cheaper, have a longer cycle life (2000+) and are very safe to use. They are less energy dense but that doesn’t matter much in a stationary application.

    1. Alaa says:

      I agree with you. Not only are they safer and do not burn, but you can charge them directly from a solar panel without a charge controller. They have a nominal voltage pf 3.2 and a can be charged with 4 voltages. So if set up properly there will be no need for a charge controller of any kind. That is more efficient than MPPT. As for the energy density, it is of no real value since this is a stationary application, so it really doesn’t matter if they are twice as heave as a Nissan or Tesla battery.

  22. Mark C says:

    I’d like to have a far greater battery backup for my home. I’m fairly energy efficient, but 4.2 kWh isn’t nearly what I use in a typical day. Maybe at some point in time, we can buy one with the entire used Leaf pack making a 16.8 kWh pack (based on 70% of original capacity). I want more than one day autonomy.

    If not a single unit with much larger capacity, maybe an option to daisy chain other “battery-only” modules so you could have more capacity without buying multiple inverters, etc.

    1. Alan says:

      I am toying with the idea of using a bank of 3 powerwall’s which should provide enough to run the house, I will probably wait another 2 or 3 years until prices come down to a realistic level to get a decent ROI.

  23. kdawg says:

    I’d like to see a bigger “power-pack” from the Leaf batteries, similar to what GM did with the Volt batteries.

    http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2015/jun/0616-volt-battery.html

  24. Mister G says:

    Will Nissan sell new battery modules to replace worn out modules in power walls?

  25. georges says:

    I hear people saying it includes an inverter.

    I don’t see that in the article. Did I miss it?

    1. mr. M says:

      a installed System Needs a Inverter…

  26. VazzedUp says:

    According to AutoBlog, payback could be as short as 5 years in the UK;

  27. Jeffrey Songster says:

    Love the idea of a V2H box and this so I have solar capture during the day of up to 4kW of excess power and the V2H box lets us access our 2 Nissan LEAF cars 48kWh during extended outages of the sort that an earthquake prone area like the Pacific rim might have. Better to be self sustaining and independent during those kinds of times.

  28. Nero says:

    My 48v 88ah battery bank cost me £800. Still works fine after 5 years, charged from solar but used just in emergencies