The government used to invest in such things for their citizens but I guess a well-educated, fed, homed citizenry isn’t considered a good roi anymore, not to mention adequately staffed public care facilities. Yes i know i heard about what Biden and nursing homes. Funny thing is, that was the norm thirty years ago, and restaurant employees got a free meal. If they worked a shift and other things we don’t have anymore, because regulation is Satan and fu they got theirs, and the dollar went further. I keep seeing blaring ads about government assistance for solar panels but they seem sus.
Maybe see what you find online, but will you be charged for not using your energy provider?
RGB3x3@lemmy.world 1 year ago
I just heard about gravity “batteries” that involve lifting concrete blocks to store potential energy, then dropping them to generate electricity with a turbine. It’s probably the most interesting thing I’ve heard of in a while and such a clever way to store energy without needing a battery.
Bgugi@lemmy.world 1 year ago
The math doesn’t really work out for gravity batteries. A fifteen ton block dropping 100 feet releases about a kwh of energy.
Or you could just have $150 worth of lithium batteries.
CoffeeJunkie@lemmy.world 1 year ago
See I’ve been skeptical about the gravity battery, too. I’m glad to see it developed, toyed with, but I like very simple ideas with very few, if any, moving parts. Gravity battery? Moving parts, cables. Would be a nightmare to work on if it broke down, possibly dangerous with the stored potential energy.
Much safer: sand battery. BTUs are expensive, you’re probably heating your water, and depending on the winter climate where you live, you are using electricity to convert to BTUs so you can heat your home/not die. I say skip the middle man!! Convert the extra energy generated from solar/wind/whatever…store it in the fucking sand as heat.
I also look at the sand battery’s simplicity, serviceability from a post-nuke/EMP/grid-down/post-apocalyptic standpoint. Should I be unfortunate enough to survive. It’s so…practical. Solar panels should only get hit <15% damage from EMP. It gets the electricity. Sent to large copper rods, acting as heating elements. Heat the sand. 🙌🏻 Sand will cost a few thousand & never degrade. Rods, cheap enough, have some spares. Those shitty LiPO batteries play out during the apocalypse, as they literally always do? You’re SOL.
skillissuer@discuss.tchncs.de 1 year ago
first, it stores heat only. you can make it work with 1000L or so barrel of water and this gets you supply for days. second, you’d want this thing to service entire small community, because otherwise square-cube law fucks you hard. you need also all the auxiliary devices like heaters, pumps, control hardware that looks the same no matter if you make it work for your house or small village
Zippy@lemmy.world 1 year ago
This. Thanks for doing the math. The only way it makes any real sense is if you a have geographical features that can store the energy. Ie right near a mountain and a large body of water high up. And even with that, it often only makes economical sense at exsisting dams where you can pump the water back into the reservoir and the generation systems is already paid for and in place.
DrQuint@lemm.ee 1 year ago
Yes. And it works.
It’s called a Dam.
elxeno@lemm.ee 1 year ago
Timberborn has those, it’s a city builder game with beavers.
skillissuer@discuss.tchncs.de 1 year ago
there are plenty issues with wear of all moving parts involved. fortunately it can be improved on in a pretty straightforward way www.youtube.com/watch?v=iGGOjD_OtAM
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satanmat@lemmy.world 1 year ago
Energy storage is THE issue…. You want to be a billionaire? Figure that out.
Pumped hydro, is great, but there are very few places where it is feasible
skillissuer@discuss.tchncs.de 1 year ago
there are many nifty ways to do it. i like molten silicon for example silbat.com
but how about shift in perspective? if you want to get in on all renewable power source, maybe it’s you who should adjust power consumption a little bit instead? fortunately most of energy used is used up for heating, and you can plug all excess energy into heater, store energy in big barrel of water for all your heating needs, and skim electrical power when available + maybe batteries as a higher priority