Whole House Batteries

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GORDON
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Post by GORDON »

They say these batteries will power your house for a week. Interesting.

[url=http://nexus404.com/Blog/2009/12/24/new-panasonic-lithium-ion-battery-to-power-up-a-house-new-li-ion-battery-coming-from-panas onic-in-2011/]http://nexus404.com/Blog....in-2011[/url]

Not only would these be good for a 4 day blackout that happens every now and then, but one could plug these into their house, and program things to never use outside electricity during peak rate hours. As long as the battery isn't so expensive as to not be able to see a return on investment within a few years, I could see getting one.

Could maybe get rid of the $700 worth of UPS's in my house that I maintain.




Edited By GORDON on 1261676841
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GORDON
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Post by GORDON »

So here's an actual product from Tesla:

http://www.treehugger.com/clean-t....3k.html

Interesting article, but it still doesn't tell you what the average maintenance cost is. I have a couple deep cycle marine batteries on my backup sump pump, they cost about $100 each, and they last 2-3 years before they no longer hold a charge. The $3k initial cost can't be the end of it.
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Post by TheCatt »

The batteries are warrantied for 10 years. So I assume it's $3k every ten years (get a new one).

In my area, this won't help at all, except for power outages. We have constant utility rates. I guess it would help a little with solar (and help those where solar back to the grid only gets wholesale rates, not consumer rates).

Power utilities do stuff like this now, but using things like mountains. In Georgia, there's a mountain with two ponds/lakes in it at different elevations. They send water up at night, then release it during the day. I believe it's roughly 74% efficient.

These are 92% efficient, while is really nice.
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GORDON
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Post by GORDON »

TheCatt wrote:Power utilities do stuff like this now, but using things like mountains. In Georgia, there's a mountain with two ponds/lakes in it at different elevations. They send water up at night, then release it during the day. I believe it's roughly 74% efficient.
I'd heard of that as a concept, but didn't know it was actually being done anywhere.
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Malcolm
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Post by Malcolm »

With enough storage, we could go 100% renewables, and as long as long as on average we produce as much power as we use (with a margin of safety for unexpected problems), we'd be fine. Storage basically smooths out the supply-demand curve, like magic.

In the fuckity fuck? If you had enough solar (and wind, I guess) power sources, maybe. Hope there aren't any windless, overcast periods in your climate.

...it can store energy from the grid off-peak when power is cheapest (in places where utilities have time-of-use dynamic pricing) and release it when power is most expensive, saving you money and smoothing out the demand peak, which is good for the grid overall.

Works until enough of the Tesla batteries are on the grid, then all this does is flatten the curve a bit more.
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Post by TheCatt »

GORDON wrote:
TheCatt wrote:Power utilities do stuff like this now, but using things like mountains. In Georgia, there's a mountain with two ponds/lakes in it at different elevations. They send water up at night, then release it during the day. I believe it's roughly 74% efficient.
I'd heard of that as a concept, but didn't know it was actually being done anywhere.
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Post by GORDON »

Neat. I've also heard of them storing energy as melted salt. Anyone doing that?
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