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this post was submitted on 04 Sep 2023
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Asklemmy
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It works very well, not disputing that.
But, like geothermal power generation (which is also very good), it’s extremely dependent on location. Most populated areas don’t have the altitude differential (steep hills) and/or water supply to implement pumped hydro storage.
Where it can be used, it should be (and largely is - fossil fuel generation does better with some storage as well, since demand is not consistent), but it’s hardly something that can be deployed alongside solar and wind generators everywhere.
With some high voltage long-range transmission lines you could viably do it pretty much everywhere. Just requires some cooperation.
Yes it will slightly reduce efficiency over very long distances, but it's not unreasonable amounts.
Long range transmission of AC power is limited to about 40 miles. DC can be transmitted much farther, but the infrastructure is substantially more expensive (because it’s more dangerous), so that’s only done for extreme need.
We aren’t getting away from having many power generators all over the place, so one location-dependent storage solution isn’t going to solve all the problems.
I might also add there's smart algorithms being developed for about 5y+ now that distribute power surplus and deficiency over a grid. This will probably be key. Just take a look at "energy metering".