Batteries SolarEdge Tesla Powerwall StorEDGE

Published on January 17th, 2016 | by Guest Contributor

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SolarEdge Launches StorEdge, Compatible With Tesla Powerwall

January 17th, 2016 by  

Originally published on Sustainnovate.
By Henry Lindon

SolarEdge’s StorEdge DC Coupled Storage Solution Now Available

A DC coupled storage solution known as “StorEdge” is now available internationally, according to the solution’s developer SolarEdge Technologies. The energy storage solution has already been deployed in various locations around the world, as of the end of 2015.

The StorEdge is essentially a means of storing unused solar energy (or electricity via other sources) in a battery for later use, as a means of functioning off-grid, or as a means of (potentially) reducing electricity bills.

The offering is reportedly compatible with Tesla’s home battery, the Powerwall, and supports Time-of-Use (TOU) management, “which promotes energy consumption when electric demand from the grid is low (off-peak rates) and lower consumption when demand is high (peak rates). The backup function allows homeowners to store solar energy and use it during electric outages.”

Solar Power World Online provides some more information: “The solution is based on a single inverter that manages and monitors solar energy generation, consumption, and storage. With the complete SolarEdge DC optimized StorEdge system, homeowners benefit from higher generation, higher efficiency, simple design, enhanced safety, full monitoring, and easy maintenance.”

“With the evolution of the solar energy market and subsidy programs, innovative solutions are increasingly necessary to create synergy between distributed solar energy and storage,” stated Lior Handelsman, SolarEdge’s VP of Marketing and Product. “As a top global inverter company, SolarEdge is committed to contributing to a thriving solar industry by offering products, such as StorEdge.”

The StorEdge is currently available in the US, Europe, Australia, and South Africa.

 
 
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  • Scott Sousa

    I install lots of Solar Edge inverters, they are far superior But you need to use the solar edge optimizers with your PV modules in order to provide a steady DC voltage level of about 305V( depending on your AC voltage). This also provides module level MPPT.
    I have ordered a power wall but have heard nothing –
    The literature indicates that the powerwall is a battery bank with a similar DC voltage level to the the input for the SE7600, this allows DC coupling.

    The Powerwall is much larger than an SE inverter. check out the photos online.

  • Julie Rosenthal

    Thank you for your continued reporting on progress in a GREAT direction!

  • evfan

    What does this do better/different than PowerWall? And at what co$t?

    I ask because this gizmo “promotes energy consumption when electric demand from the grid is low (off-peak rates) and lower consumption when demand is high (peak rates). The backup function allows homeowners to store solar energy and use it during electric outages.”

    I thought PowerWall already did that. And that you could install multiple PowerWall units if needed.

    • vensonata

      Powerwall is only a DC battery. It cannot supply AC electricity, therefore you need this inverter unless of course you want to run your house on DC like Edison thought you should.

      • Kevin McKinney

        Which raises an interesting question: should we be doing it more like Edison thought we should? Apparently, this is a bit of a ‘thing’:

        2007:
        http://www.treehugger.com/sustainable-product-design/big-steps-in-building-change-our-wiring-to-12-volt-dc.html

        2012:
        http://www.technologyreview.com/news/427504/edisons-revenge-the-rise-of-dc-power/

        Didn’t find anything from this year, though.

        • GCO

          DC would be nice, yes, but not low-voltage please.

          The input stage of many appliances is a rectifier (turning AC back into DC), usually with PFC (power factor correction) circuitry, to end up with about 170 or 350 V DC internally. This input stage could be skipped if this DC voltage was provided directly, but that’s about where DC advantages end.

          Converting that supply voltage to e.g. less than 1V for most CPUs or about 400V for EVs still needs to be done, so the bulk of the power supply circuitry, along with associated losses, would remain.

          The main drawback of DC used to be how difficult it was to step voltage up before transmission and down at the other end to minimize losses; I don’t think that’s much of a concern anymore with today’s semiconductors.
          Another one is arcing, which DC plugs and outlets will need measures to prevent or mitigate.

          IMHO, what’s mostly missing nowadays are standards.

      • mike_dyke

        I wonder how many of the google inverter challenge products will be doing the same job as this one?

        • vensonata

          You had to remind me. This month the winner will be announced. The implications are vast, but cloudy. (By the way, Mike is referring to the “google little box one million dollar inverter prize”. Shrink the standard inverter down by 90%. 17 entries qualify and have been tested, winner this month)

    • Frank

      http://www.solaredge.us/groups/us/solutions/storedge

      What do the other parts cost? How does it compare to the Xantrex XW, and outback GTFX and GVFX inverters, and any other comperable one.

  • Shiggity

    These products are all fine and good, but utilities are so threatened by them they’ll create every policy imagineable to artifically increase the cost to you.

    I’ve seen installation quotes for things like these ABOVE what the units actually cost. Not to mention MONTHS of waiting. Ridiculous.

    So obvious the utlities are *purposefully* being anticompetative right to YOUR FACE.

    Wake the fuck up SEC.

    • evfan

      I think you are correct when you claim utilities are threatened by solar and they fight it, but the cost of installation is a different matter.

      • Steve Grinwis

        In my area, you can’t hook up device that can back feed the grid without approval and inspection by the local utility. This can cost thousands..

    • Frank

      This is a structural problem. Distribution monipoly part should not be allowed to own generation. This law needs to change.

      • Hans

        “This is a structural problem. Distribution monipoly part should not be allowed to own generation.”

        Nor to sell power. Many European countries show it is possible to limit the task of grid operators to just transport the power.

        • Frank

          That’s even better. I’m amending my opinion.

        • neroden

          Even New York has done this separation of power generation and transportation.

    • Hans

      I have said it before: the only solution is to break up the vertically integrated monopolistic utilities. Grids have a natural monopoly, but power production and retail should be open to competition and in companies separated from the grid company. Only this way will the grid company will have no incentive to sabotage distributed power.

      • smslaw

        That separation of distribution from power production already exists in Maine and some other states.

  • vensonata

    “SolarEdge StorEdge SE7600A-USS Single Phase Grid Tied Inverter that is
    compatible with off-grid battery systems including Tesla home battery.
    Provides automatic backup power in case of grid interruption. 7,600
    watts to 8,350 watts maximum AC power output. 12 Year Warranty included;
    optional 20 and 25 year upgrades available. This SolarEdge inverter is
    designed for solar panels and home battery backup with superior 98%
    efficiency; Small, lightweight and easy to install on provided bracket;
    Built-in module-level monitoring with communication to internet via
    Ethernet; Outdoor and indoor installation; Integrated AC/DC Switch.
    Compatible with Tesla Powerwall home battery and other batteries.”

    Note: the warranty can be upgraded to 25 years! Also worthy of note 98% efficiency.The price is about $3500. And it seems it could handle multiple powerwalls as long as you do not exceed 8350 watts peak draw or charging rate. That means an 8 kw PV array could charge your powerwall or series of powerwalls without exceeding the capacity of this inverter. If you already have microinverters, then you will have to run them through the solaredge to re invert to DC before feeding your powerwall.

    • eveee

      That 25 year warranty is a big deal. I am a little disappointed the price is higher, but it integrates more functionality than a raw inverter. The intelligence knowing when to charge or discharge is worth something.

      • vensonata

        $3500 divided by 25 years = $140 year. 38cents per day. 15 kwh per day. 2.5 cents per kwh. Not bad.

        • eveee

          Yes. And its a big deal that its operation is automated. It will save a lot of money. Inverters are a pretty small part of system cost. This one has a very decent output. Over 8kw is beefy. The PowerWall is only 7kw peak. Looks like they designed it to match Tesla well.

    • neroden

      “And it seems it could handle multiple powerwalls as long as you do not exceed 8350 watts peak draw or charging rate.”

      OK, this is important. So people who are planning to have relatively low peak draw but want to go off-grid can hook up as many powerwalls as they need: for instance, Alaskans north of the Arctic Circle can hook up enough to get through the sunless winter. 🙂

      Sadly I’ve built a home with very high power draw (electric oven for example) so none of these are powerful enough for me to go off-grid.

  • mike_dyke

    Storage Sizes? Cost?

    • newnodm

      It’s an inverter that works with a single powerwall. The primary way (only way) that powerwall will work in some countries for now.
      The powerwall is not much more than a bunch of batteries. The logic runs in the inverter.

      • Ronald Brakels

        A single Powerwall? I’m pretty sure it can run with more than one.

        • newnodm

          When they started development, they said the initial version would handle only one. But I’m not sure what they are releasing. They certainly intend to do control for many powerwalls.

          • mike_dyke

            Ah, so it’s an inverter front-end to a powerwall which doesn’t have it’s own storage. Seems a bit big for that.

          • newnodm

            That article photo is probably not to scale. Storedge is probably the size of regular inverters.

          • fiddler John

            Dimensions (HxWxD) 6.7 x 7.9 x 5.5 / 170 x 200 x 140 in / mm

            Weight 29.7 / 13.5 lb / kg

          • mike_dyke

            Thanks for that – As newodm said, the photo is not to scale as the photo shows it about the same height as the powerwall.

          • Ronald Brakels

            You were right. It does only handle one Powerwall. If you want another Powerwall you need to buy another Solaredge. And looking up the Fronius Symo Hybrid (which is for Australian three phase power households while the Solaredge is single phase), I see it can only handle one Powerwall too. Now there are plenty of people who will only wnat one Powerwall, but I am surprised because this means they don’t cater to the nutty as a lumpy chocolate bar crowd who want to go off-grid in Australian towns and cities regardless of the cost because of how much they hate electricity distributers. Or maybe it is catering to them by selling them extra units to bring in extra cash? But this is not a stable strategy since someone is bound to come along and say, “Hey, mine handles two!”

            I’ll need to look into these systems a lot more before I understand what they are capable of.

          • vensonata

            Where does it say it only handles one powerwall?

          • vensonata

            “Number of Batteries per Inverter: 1 (note: for more batteries per inverter contact SolarEdge)” That is all I can find.

          • Ronald Brakels

            Information can be found here: http://www.solaredge.com/groups/products/storedge

            Only one battery and one interface can be accomodated.

            This is version 1.0. I suppose there could be another version out there.

          • vensonata

            See below, my comment. There is a faint hope twinkling in the distance that there is a way of adding more powerwalls but that solaredge is keeping it out of our childish hands for now.

          • Ronald Brakels

            Well, they certainly will get around to it if they want to stay in the game. But it’s early days yet and I guess it’s a case of one step at a time.

          • juxx0r

            I would have thought that you could link two or more powerwalls together via DC and It’ll never notice

          • juxx0r

            Maybe they said “one powerwall and I’m outta here.”

          • neroden

            Yeah, this is bizarre. The high end of the market is undoubtedly going to want to hook up two, three, four, a dozen powerwalls to go off-grid. Nobody wants to add unnecessary extra inverters, with unnecessary extra *coordination circuits* to coordinate the inverters…

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