On: India is rolling out trains with solar-powered coa...

[nerdponx]

Consider that building powerlines or a third rail is more complicated and expensive then plain track.

[rukittenme → nerdponx]

Consider that solar panels on a train are a pointless expenditure that decreases efficiency and increases the train's carbon footprint.

Choose the third option. Do nothing. It's better for the environment and their wallets!