There is no reason I can’t put a swimming pool size battery under my house. I don’t care what the energy density is, make it bulletproof and cheap and massive.

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coldtea an hour ago | parent | next [-]

"There's no reason" just "make it safe and cheap in huge size".

Kind of like there's no reason we can't go to Mars for tourism. Just make it as convenient, safe, and cheap as a jet to London.

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shadowpho 2 hours ago | parent | prev | next [-]

Cost is a reason. You need to dig out that dirt (which is expensive), it needs supports, your house needs support around it/through it…

Making things bulletproof and massive runs opposite of cheap

	▲	stronglikedan 2 hours ago \| parent [-]
		I figured they meant while building the house, which of course would cut costs by a lot if it were engineered for.

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giwook an hour ago | parent | prev | next [-]

For some reason I wouldn't exactly feel safe knowing there is a huge battery under my house that may combust at any moment.

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mschuster91 an hour ago | parent [-]

That's the beauty with sodium ion batteries, they are generally considered to be even less flammable than already pretty safe LiFePO4.

	▲	margalabargala an hour ago \| parent \| next [-]
		Unfortunately that's not exactly true. Aqueous sodium ion chemistries like Na-VPF and Na-tmCN are more fire-safe than lithium, but they're also not as developed/available yet. Na-NMF, which is what a random off-the-shelf sodium cell is likely to be, is actually more flammable than LiFePO4.
	▲	an hour ago \| parent \| prev [-]
		[deleted]

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soco an hour ago | parent | prev | next [-]

Why under the house? It can sit under your yard, no need to bother with so many tons of construction concrete on top of it.

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fl4regun an hour ago | parent | next [-]

I could imagine plants messing with it, unless you bury it really deep.

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giwook an hour ago | parent | prev [-]

Not everyone has a yard lol

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coldtea an hour ago | parent [-]

but everyone can afford a non-existant huge-ass battery under their house?

(Not everyone has a house either, some rent, others live in apartments, lol)

	▲	giwook an hour ago \| parent [-]
		...

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proee an hour ago | parent | prev | next [-]

I don't think swimming pool is the best size. Why not a hole that's a few meters in diameter but SUPER deep? So long as your water table is sufficiently deep. This way you can service it, should you need to remove/replace contents. If it's under your house - good luck with that.

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ck2 an hour ago | parent | prev [-]

that might be a evolutionary step where you just pump in electrolyte under a housing into waterproof container and every 10 years just pump it out again for fresh electrolyte

doesn't burn like LiFePo4 so no fire risks, though I am not sure what a short-circuit would do in damage/danger

why even under a structure though, just do it like a septic tank?