Low energy lighting

The past few years have seen a huge upheaval in how we light our homes and offices. The traditional incandescent lightbulb is no longer on the shelves of shops. They were very inefficient. 90% of the electricity used to light incandescents was lost in the form of heat. Halogen light bulbs – a much smaller version of incandescents – also generate a lot of heat. They use less electricity than incandescents, but tend to be used in greater numbers, which cancels out the savings.