The light that earns you money from your electricity supplier

Lots of lighting products offer to cut your electricity bills. But iViTi's On lamp, combined with its AdrOn technology, can actually earn you money back from your supplier. The lamp senses when demand on the grid is high, and switches automatically to its backup battery, helping Britain keep its lights on and earning you money from your supplier for load shedding. Lux visits the iViTi stand at LuxLive 2014 to find out more.