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> It isn't practical to build mountains, so you need to find some natural mountains you don't mind cutting a big hole into You don't even need a mountain. A h
by danans 5y ago
> It isn't practical to build mountains, so you need to find some natural mountains you don't mind cutting a big hole into
You don't even need a mountain. A hill will do:
https://en.m.wikipedia.org/wiki/Ludington_Pumped_Storage_Power_Plant https://en.m.wikipedia.org/wiki/Ludington_Pumped_Storage_Pow...
- Manuel_D 5y agoWhen including inflation, it's delivered at a cost of 2 billion dollars for 19 GWh of storage. $200 per KWh isn't exactly good, it's not even on par with lithium ion batteries.
- Lascaille 5y ago2016 generation: -752 GW/h
- amscanne 5y agoBut since it’s not a generation facility and has a 70% efficiency, that implies it stored and returned 2506 GWh of electricity. At peak retail prices where I am in California (absurdly expensive) that’s worth over 1.5 billion dollars. Obviously you won’t have retail pricing, the market is different and you have transmission costs, etc. but the economics are still surprising. 200 $/kWh might be perfectly fine for a safe, low-maintenance, environment friendly storage that can be used with no time constraints.