photovoltaic

adj

1. (not-comparable)Producing a voltage when exposed to light.

   “But the truly impressive part of this entry is the photovoltaic film that has been applied to the platform and entrance roofs (all 272 square metres of it). It is a UK first for the railway, and is expected to generate 36kW of electricity to meet the needs of the station itself and to feed the surplus back to the grid.”