Follows use of incandescent bulbs in order to reduce greenhouse gas emissions . Campaigners say are not much more efficient than traditional bulbs . So can be replaced by energy - efficient compact fluorescent bulbs . But these alternatives ( known as lamps and LEDs ) can be as much as 15 times more expensive .
Follows ban of incandescent bulbs in bid to cut greenhouse gas emissions . Campaigners say halogens not much more efficient than traditional bulbs . So should be replaced by energy-saving compact fluorescent bulbs . But these alternatives ( known as CFLs and LEDs ) can be as much as 15 times more expensive .