[jandrese]

Unless they are using this dump truck to fill in an old pit it doesn't seem like that should happen very often.

The logistics of feeding the power back to the grid are also a bit wonky. Is it going to be dragging a cable behind it? Is there an inductive charge/discharge pad that it drives over? The article has no useful details on this, and the whole idea seems rather half baked.

[hwillis]

Think about it like this: mountains are places where deep mineral layers are pushed up into the surface, exposing them. It's where you find many of the dense, valuable ores without layers of dirt and non-valuable rock overtop. Mountains are actually great places to mine.

[aidos]

I think that's a little unfair. I'm sure they've done the maths since they're building a massive electric truck. Maybe the article was overstating it a little but it certainly not technically impossible for it to store electricity and then release some of it once it's back up the top.

[razorunreal]

Why would feeding power back to the grid be any different from charging? When the battery gets full you'd plug in and mostly discharge it.

[Fjolsvith]

Doesn't an electric train have overhead power cables?

[grzm]

Depends on the system.

> An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or fuel cell.

https://en.wikipedia.org/wiki/Electric_locomotive