Tesla Unveils Tesla Power: Modular 10-kWh PowerWall for Home, 100-kWh PowerPack for Utilities, at Live Event

Moments ago, Tesla Motors [NASDAQ:TSLA] concluded a live presentation at a special gala event at its Hawthorne design studio in Hawthorne, California at which it unveiled a new range of storage products designed to help the world switch to renewable energy.

The first is a domestic-grade lithium-ion battery pack called the Tesla PowerWall, measuring six inches by four feet by three feet, which is designed to be wall-mounted on the wall of someone’s home. Modular in design, the Tesla PowerWall comes in either 7 kilowatt-hour daily cycle or 10 kilowatt-hour weekly cycle models, and can be daisy-chained together with up to eight other Tesla PowerWalls to give a total of 90 kilowatt-hours of off-grid or grid-connected storage.

It's here: Tesla's new battery backup system for the home -- and it's called the Tesla PowerWall

It’s here: Tesla’s new battery backup system for the home — and it’s called the Tesla PowerWall

Each unit is self-contained, containing everything needed to take power from a renewable source of electricity such as photovoltaic solar panels, store it, and then feed it back to the electrical system when needed, and is available to order from today for $3,000 for the 7-kilowatt-hour daily cycle and $3,500 for the weekly cycle units. An AC to DC inverter — which is what you’d need to use the system to charge the battery pack from the utility grid — is not included, although it appears a DC-AC inverter is included, allowing you to run mains electricity items from the unit.

We note that the 7 kilowatt-hour unit is listed on Tesla’s website as being ‘for daily cycle applications,’ presumably meaning for use as a off-grid storage system for a photovoltaic solar array. The 10 kilowatt-hour battery pack is listed as being ‘for backup applications.’

Each unit is rated at 2 kilowatts of continuous power output, with a 3.3 kilowatt peak power output.

“It looks like a beautiful sculpture on the wall,” said Tesla CEO Elon Musk as he unveiled the unit. “A normal household can mount this on their garage or outside wall of their home.”

The Tesla PowerWall (Photo: Dennis Pascual)

The Tesla PowerWall (Photo: Dennis Pascual)

There’s a nod to Apple aesthetics too: the Tesla PowerWall is available in a range of colours to enable customers to mix and match units to their home decor.

Tesla says the battery packs are guaranteed for ten years with an optional ten-year extension, and will begin shipping later this spring.

You can order the unit today at TeslaEnergy.com, but initially production volumes are expected to be low (volumes weren’t mentioned by number) as Tesla will produce the units at its Fremont facility until such a point where the Tesla Gigafactory is complete. At that point, production will dramatically ramp up.

Also unveiled at the event was a much larger, utility-scale battery pack called the Tesla PowerPack: a 100-kilowatt-hour modular battery pack that is intended for use by large utility companies, offices and large generators. Capable of being combined in gigawatt-hour size battery banks, the Tesla PowerPack already has its first customer: an unnamed utility company wanting a 250 Megawatt-hour installation to help it cope with peak power demand and help it store renewable energy generated during the day until it is needed at night.

The Tesla PowerPack Photo: Dennis Pascual

The Tesla PowerPack Photo: Dennis Pascual

As a demonstration, Musk gave the assembled audience some basic figures: a 1 Gigawatt-hour PowerPack installation could power a city the size of Boulder, CO. on solar power alone, while 2 billion PowerPacks would be enough to transition the entire world onto renewable electricity — including enough power to support the transition from fossil-fuelled transportation to electric vehicles.

To prove the units’ capabilities, Musk disclosed something the audience didn’t yet know: the Hawthorne design studio has its own PowerPack installation, which Tesla used to ensure the night-time event was entirely powered by power generated by the solar panels mounted on the roof of the venue.

We’ll bring you more information as we have it, but we’re keen to know what you think of these two new non-automotive Tesla products.

Will you be ordering a Tesla PowerWall? Will you be looking into a PowerPack for your business? Or is Elon Musk’s vision of a society powered entirely on renewable energy an impossible pipe dream?

Leave your thoughts in the Comments below.


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  • Martin

    Domestic daily cycle sounds good. Not sure if it would pay in my circumstances. But the size and modularity is right for PV systems.

  • Ayan Mullick

    If Tesla’s goal is to accelerate the advent of electric cars, shouldn’t they be publishing, let’s say, a step-by-step guide to build cars with a floor-integrated a battery pack for the DIY car converters ? Just thinking…

    • Joe

      As a tinkerer, I’d be very excited about something like that, but how many DIY car converters are out there? I’ve toyed with the idea of converting my 2005 Prius to a plug-in but have not done it because the price of real plug-in cars is coming down so fast. I could either spend around $10,000 to upgrade my ten-year-old car to a plug-in capable of going 35 miles on a charge or I can spend $18,000 on a used Volt/LEAF with a similar (or much better) range plus a ton of other new goodies that my Prius does not have. If I’m deciding against it, lots of others probably are, too, which might mean that the DIY solution to getting more EVs on the road is looking less helpful all the time. nnnTesla may have decided that the willing and able DIY community is too small to make a significant impact on the world’s car fleet compared to building great new cars.

      • Ayan Mullick

        The Gigafactory is supposed to half the cost of battery packs or so. So you would probably have to pay ~$5k instead of $10. And I think floor-integration could enable the motorhome converters to build a truly all-electric class B motorhome; ~80kWh should be enough.

        • Joe

          Yeah? I’m not so sure. How much range do you think an 80kWh battery would provide to a converted motorhome? In an aluminum bodied, slippery Model S range would be about 250 miles. In a heavy motorhome with the drag coefficient of a shoebox I’d expect range to be somewhere around 80 miles at most. I’m not a motorhome enthusiast but I assume the point is to go on long trips across the country. Stopping every 80 miles, even for 45 minutes at superchargers, might be a bit too frequent for drivers with a chorus of “Are we there yet?” rising from the rear.

          • Ayan Mullick

            May be. But for a solo camper in something like the Autosleeper Topaz; a 100-120 mile range could be acceptable to some. And that would be a good starting point.

  • Ben Nelson

    Love everything Elon and the crew are doing. My only beef was with the last slide in his presentation. He tells of the future we could and should have leveling off CO2. However, it’s already too high right now, and even higher in the graphic. We need to LOWER CO2!

    • vdiv

      The tree-planting drones news was a bit more exciting 🙂

    • Surya

      I agree. The graph is wrong. But won’t CO2 lower by itself if we stop emitting it (in time)?

      • neroden

        In time, but way too much time. We basically have to seed lots of algae and plant lots of trees or something equivalent. There are a bunch of people developing carbon-negative industrial processes, which will help.

  • Joe

    I was happy to stay up well past midnight to watch the event live as this product solves a problem that’s been on my mind for a long time. I’ve wanted to install photo-voltaic (PV) panels on my roof since I was a kid but the idea of selling the “clean electricity” to the power company and then buying “dirty electricity” during peak hours never sat right with me. It seems like it should all be the same in the end, but really it’s not, as Musk alluded to a few times last night. Directly consuming the electricity my panels generate is what I prefer, and the PowerWall seems to make that possible. I wonder how truly plug-and-play it is and how good the longevity is. Considering that it’s a Tesla product, I can only assume it will integrate well with PV installations. Longevity is always a concern with a battery product, but the whopping 10 year warranty is heartening! nnnBefore placing an order though, I want more details. I’ll need to know just what it takes to integrate PV panels, and how to connect this to my house’s circuit breaker panel. Will this connect through my backup generator’s transfer switch? How should it be wired to automatically pick up the load during a power outage? Will it carry my home’s normal full load or is it best to connect select circuits to it so that only, say, the lower-draw 120v circuits are ever using the battery power? Perhaps Tesla will offer these details soon, because I imagine I’m not the only person waiting for more details before ordering!

  • BenBrownEA

    quite timely as we have multiple businesses and groups in our city who are producing solar sourced electric and are looking at individual neighborhoods throughout the city having places of resilience.

  • D. Harrower

    I would consider one of these to use for emergency backup purposes but, unfortunately, since we have all-electric utilities here (no access to natural gas) both models are too small to really be much good. I’d need 3 or 4 of them to be able to continue as usual with the power out.nnI guess I could look into the 100kWh commercial unit. Did they announce pricing on those?

  • Surya

    I like it. But I’m not rushing to order one. If I get batteries for my home, I’ll get them to get off of the grid. Driving an EV, I’l need far more than 10kWh of backup, especially if there’s a few days of low sun during the winter. But since it’s illegal to live off grid in Belgium, we’ll postpone that plan.nI have a PV array but it doesn’t save me any money at all to store my production during the day for use at night, so something would have to change there as well to make this attractive.nOne last thing: 2kW output? Hey Tesla, you make EVs. Many of your battery customers will drive EVs. I charge my EV at 7kW, and I’m very certain I’m not alone in this when I say: having a 2kW output on your batteries is of little use if you want to live off grid and charge your EV! Does the output increase when you line up multiple units?

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