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There is a train in Australia that carries ore from a mine to a port, fully electric, which never needs external charging - the mine is higher than the port, so the train just charges its internal batteries going down, which is enough to drive it back up to the mine, it's very cool:

The "infinity train" is still under construction.

Due to launch sometime soon in 2024 (as announced in 2022) it's still yet to roll on it's maiden haul.

They are still hiring electrical techs though.

Probably less than you'd think. Moving things on wheels is a lot easier than (for example) lifting and, compared to cars, it does not need to accelerate fast or deal with highly varying loads.

Well weight is 110x normal EV, but range is 30x less. So about 220kwh?

yeah I wonder how many of those 240 tons ARE the battery!

None? That 240 tons is the payload.