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So if/when the power is out, no heat. First low end thought is a portable battery / UPS like this:
https://www.amazon.com/dp/B00U5YWKOK?psc=1
A bit more digging around on Amazon and I found this gadget:
https://www.amazon.com/FSP-Portable...3_6?ie=UTF8&psc=1&refRID=6JRTPTK30212XBSEGDMQ
2.6 kwh of energy storage, with the ability to run high wattage 110 appliances (pellet stove will be trivial). Add in the solar panel recharge option, and as long as we define off-grid as "pellet stove runs", then it looks like this could do the job.
Of course, up in this price range, it starts making sense to think about a powerwall, a cutoff switch for the house when the grid is down, and liberal throwing of breakers to disable most power consumption while the rest of the grid is down.
For today, I'm mostly listing it as a means of expanding people's idea of what's available out there.
For my own part, I'm not ready to act today, and beyond a cheap / temporary solution, probably not ready to do anything this fall. One thing I like though is that lithium is starting to work it's way into this storage market as well. I don't claim anything resembling expertise, but from what I've read about lead acid battery systems, I lean towards finding a lithium option instead. I know it's going to be a lot more expensive - how much more expensive is something I'm keenly interested in figuring out.
I've always wanted to create a portable system in my garage just for testing out and emergencies.
Looking at
Portable Panel - https://www.amazon.co.uk/dp/B003SJ2B8O
Small battery - https://www.amazon.co.uk/dp/B00JJDPTYQ
I have a 10kwh system on my house right now. I looked into battery back-ups a few years ago and the only real option was a car sized lot of large batteries. Also in the $12,000 range so I gave it up and figured to wait on something better. Well now Tesla has something better. It is still too expensive for my needs but will probably get the Powerwall in the next year or 2 and keeping an eye on advancments. I would love to be off grid!
> pellet stoves need about 600 watts of electricity get started, and then a lower ongoing level to run a fan to move air. [adiggs]
You could light stove using a propane torch, drilling a hole if necessary to get it poked into the firebox. The original attraction of burning pellets was that the fuel supply could be handled by even a seriously handicapped person who would be unable to open up stove and reach inside to start the fire. The fan is probably necessary to avoid overheating or at least maintain efficiency. But you could replace the 120v AC fan with a couple 12v/5v DC computer whisper fans etc to match almost any power source.
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I talked to Aquion briefly at the solar show in San Francisco in July. The pallet size 25kWh 48VDC package was ballparked for me at $25,000. That's $1,000/kWh. Um, no thanks. I'll wait for a good inverter with a battery interface that will take an intact salvage EV pack. Salvage Leaf packs should be around $100/kWh.I've also been intrigued by the Aquion Energy system, and I'd say it's certainly in the solution space I'd consider. I agree in principle with the idea that for stationary storage, you can give up a lot of size and weight relative to mobile applications.
However, I also expect a pretty heft discount relative to the alternative. Not 10% - probably closer to 30 or 50% - though I haven't really thought about it much. The real point being that for stationary storage, I expect to trade off size and weight as relatively unimportant vectors, to get the price of the system down dramatically.
It's been a while since I've talked to anybody, but the prices I saw back then were high enough to leave me thinking Powerwall might be the cheaper alternative. It may be time to look again soon.
My concern with this technology is that in a sense, they're going up against the dramatically larger volume in the lithium battery business, with the corresponding economies of scale. It may be that on paper, dirt and salt water should make for a lot cheaper battery. In practice, if these folks are building MWh, and the other folks are building GWh, that's 3 orders of magnitude difference in volume. That alters supply chain behavior and on and on.
If anybody does get more info about the Aquion system, especially including a sense of the price per kwh for an installed system, I'd be very interested in learning those details.
(I'm already picturing where the M / pallet sized battery might sit and provide 20-something kwh of storage; that sounds like comfortable off-grid living in stretches with enough solar, and I hear there's a new solar roof thing coming ...)
For sure. I didn't buy an HDTV til I could get one for $1200, so i wouldn't buy an Aqueon until it was maybe $250-300/kWh. Considering why and how they manufacture today, I think think a quarter of the current price would be easily achievable at scale.I talked to Aquion briefly at the solar show in San Francisco in July. The pallet size 25kWh 48VDC package was ballparked for me at $25,000. That's $1,000/kWh. Um, no thanks. I'll wait for a good inverter with a battery interface that will take an intact salvage EV pack. Salvage Leaf packs should be around $100/kWh.
For sure. I didn't buy an HDTV til I could get one for $1200, so i wouldn't buy an Aqueon until it was maybe $250-300/kWh. Considering why and how they manufacture today, I think think a quarter of the current price would be easily achievable at scale.
Imagine a completely safe, nontoxic battery pack made out of simple materials for ~$6k that could take you off grid if you so desired. Pretty insane to think about what the world will be like in 20 years when even that price point will be considered quite excessive.
Free energy is essentially here, why are we not partying???