If you want to sell a bicycle, light it up, says Eamon Barrett, owner of the Altitude bike shop in Waterford, Ireland. The glossy technicolour paints, the chrome, the shiny new spokes - they all glisten in bright light.
But having fluorescent bulbs blazing all day long to help shift a supposedly green form of transport began to bother Mr Barrett. So, around three years ago, he decided to switch to more efficient LED lighting in Altitude's showroom and also the workshop, canteen and back offices.