WHAT GOES DOWN CAN CHARGE UP .
With the right terrain, electric quarry trucks can simultaneously build mountain roads and deliver road metal to lower elevations at near net zero energy cost.
Using regenerative braking on the way down steep roads, the strong permanent magnet motor-generators in heavily laden E-trucks can amply recharge the batteries that run them up the mountain unburdened. This converted Komatsu weighs 70 tonnes going up empty, and 160 charging down full.
If you don't have a mountain handy , try this:
