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Tesla Energy

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Re: Tesla Energy

#41

Post by localhost »

I'm going to install a 9kW solar grid on my roof in the next couple of months - capital cost is ~$40K USD. Without the Power Wall, I'd be selling power back to the utility at around $0.10 / kWh, and buying it back at $0.09 / kWh in the evenings. The Power Wall will also let me endure grid outages as well (you can't run your house on your solar panels directly).

I'm really curious about what the end-user cost is going to be for one of these batteries, after distributor markup and utility company rebates. Would be interesting to see if it pays for itself over the 10 year lifespan of the batteries.

I just reserved one.

Re: Tesla Energy

#42

Post by Turing_Machine »

rokhayakebe wrote: post #10

Can someone please share what a single family home can do with 10kWh? If I pay for this do I have to plug this thing into my own electrical grid to keep charging it?

According to http://www.eia.gov/tools/faqs/faq.cfm?id=97&t=3 the average U.S. home uses 10,908 kWh/year, so this would be enough to keep the home running at full load for about 8.4 hours. Not bad.

If you took steps to reduce consumption (avoiding using heavy demand appliances like electric ovens, etc.) it would last a lot longer. With a little care, you could probably run for a couple of days on one of these, particularly if you had LED lights, etc.

Re: Tesla Energy

#43

Post by uberdog »

rio517 wrote: post #21
sidcool wrote: post #7

I must say Elon is a brilliant engineer but not the best of orators.

I was thinking the same as I watched it. I was wondering if there were some technical issues to explain the slow start of his speaking part and if he might have been frazzled from whatever happened behind the scenes.

He was the same at the Dragon 2 launch. I get the impression that he doesn't rehearse for these events much, probably because he's probably got much more important things to work on.

Re: Tesla Energy

#44

Post by ridicter »

milesf wrote: post #33

Today is a big deal. Open sourcing the patents to build fully solar-powered electrical grids around the will be a paradigm shift in the power structures of the world. I expect from today onward there will be a full-scale attack from those who stand to lose because of the reduced dependency on oil. First they ignore you. Then they laugh at you. Then they fight you. Then you win.

As someone who avoided the startuposphere so that I could focus on climate change activism and pricing carbon, seeing Elon Musk implore the world to avoid winning a Darwin Award was so incredibly rewarding and validating.

He will most certainly be fought tooth and nail, but he has allies.

Re: Tesla Energy

#45

Post by kondro »

uberdog wrote: post #40
kondro wrote: post #32

Doesn't include inverter or installer markup and can only provide 2kW output. It will get expensive by the time you actually have all the bits you need inside your house. How is this better than deep-cycle batteries (with 20+ year lives) again? Why does it need to be slimline?

> Why does it need to be slimline? "so you don't need a battery room" - Elon Musk

10kWh of deep-cycle batteries aren't that large. It's not like people in apartments are going to be using this product.

Re: Tesla Energy

#46

Post by daemin »

The maximum temperature will be an issue here in Australia. In a typical place where it will be mounted, i.e. the garage, the temperatures will readily get over 40, close to 50 during summer.

I could see this also being a problem in places like Nevada and Arizona in the USA.

Re: Tesla Energy

#48

Post by davidw »

> 7kWh or 10kWh

Can anyone speak to what that could power? Could I run a load of laundry with it? How about dry it afterwards? Here in Italy people mostly take advantage of "solar power" by hanging clothes to dry, but just to get an idea of what the battery could run.

Re: Tesla Energy

#49

Post by BinaryIdiot »

milesf wrote: post #33

Today is a big deal. Open sourcing the patents to build fully solar-powered electrical grids around the will be a paradigm shift in the power structures of the world. I expect from today onward there will be a full-scale attack from those who stand to lose because of the reduced dependency on oil. First they ignore you. Then they laugh at you. Then they fight you. Then you win.

> I expect from today onward there will be a full-scale attack from those who stand to lose because of the reduced dependency on oil.

Maybe. But remember we don't have the technology yet to completely move away from fossil fuels. The biggest issue I know of is making Airplanes electric which so far has not proven really feasible (as far as I can find anyway). This solves a huge chunk of issues but there are still plenty more before we can claim we have the technology to completely transition.

I'm excited for the possibility however.

Re: Tesla Energy

#50

Post by hayksaakian »

localhost wrote: post #41

I'm going to install a 9kW solar grid on my roof in the next couple of months - capital cost is ~$40K USD. Without the Power Wall, I'd be selling power back to the utility at around $0.10 / kWh, and buying it back at $0.09 / kWh in the evenings. The Power Wall will also let me endure grid outages as well (you can't run your house on your solar panels directly). I'm really curious about what the end-user cost is going…

Is it really worth it if it really takes 10 years to break even (and that's the lifespan as you mentioned)? That's like giving someone a 10 year 0% interest loan.

Maybe you're better off buying a bunch of Tesla stock with that money if you think they'll stick around that long.

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