Freight trains have very powerful versions of those onboard. You'd just have to ... | Hacker News

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		HPsquared 45 days ago \| parent \| context \| favorite \| on: Maximizing Battery Storage Profits via High-Freque... Freight trains have very powerful versions of those onboard. You'd just have to repurpose them. It's called "dynamic braking". https://en.m.wikipedia.org/wiki/Dynamic_braking

eru 45 days ago [–]

Some electric cars have that as well.

Btw, many passenger trains have something like that as well, especially in the metro or tube: the stations are deliberately built slightly higher than the normal lines, so that you can convert kinetic and potential energy back and forth.

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