This is smart because it uses electricity during the lowest demand period of the energy load profile. If your country or one of its neighbours has high base loa

This is smart because it uses electricity during the lowest demand period of the energy load profile. If your country or one of its neighbours has high base load power generation like France does, it makes a lot of sense to run electric trains during the night because they'll use electricity which is otherwise sold at a discount or redirected to pumped hydroelectric storage or other storage options if they exist.