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It not only avoids the battery problem, but can be a solution to the battery problem.
by surfmike 6y ago
It not only avoids the battery problem, but can be a solution to the battery problem.
- raverbashing 6y agoPumping water up is very inefficient
- ascorbic 6y agoPumped hydro has an efficiency of around 80%, which is similar to lithium ion batteries. They also have massive capacity. The downside is that there aren't many places where they can be built.
- gamegoblin 6y agoPumped-storage hydro is the most efficient large-scale energy storage mechanism. 70-80% round-trip efficiency. https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity#Economic_efficiency https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricit...
- raverbashing 6y agoI stand corrected
- braythwayt 6y agoVery. However, nobody told the sun that, so it keeps heating up the seas, evaporating their water, and letting the resulting moisture drift until it gets pushed up into cold air by some land obstruction like a mountain range... "Pumping" the water uphill in this manner is very inefficient, but like all legacy technologies, we're stuck with it until we can invent a replacement ;-)
- 2YwaZHXV 6y agoWhile not quite as big as other pumped storage systems this is one system that is looking to avoid the exposed area and dependence on natural reservoirs: https://heindl-energy.com/ https://heindl-energy.com/