background black bright brightness bulb copyspace dark darkness dim electric electricity energy fluorescent glow glowing illuminate illumination life light lighting lit lite long longlife low power save tube white danger electric-power electricity-poles electricity-power-lines equipment height high high-voltage high-voltage-equipment insulators power-poles power-supply strength sub-station supply transformers wires wiring chandelier decoration glass lamp lighting system red steel sun wall yellow city cityscape lantern street europe Malta sky street light blue lights roof room seeling box computerised computerized control control-box house-wiring power-pole