Andrew Warren, Director of the UK Association for the Conservation of Energy, wrote an excellent column that appears in the current issue of Energy in Buildings & Industry magazine. He looked at the way in which the absence of a legally binding Europe-wide target for energy efficiency improvement for 2020 is leading to the likelihood of a gross undershooting of the agreed “aspirational” 20% reduction target. This is even though saving energy is nearly always the most cost- optimal policy option to pursue.
The column is available here.
Energy in Demand - Sustainable Energy - Rod Janssen 
The benefit of LED Lights is that they are an eco-friendly form of lighting as they do not contain mercury or other harmful gasses or emit any harmful UV rays. For example, a 13w LED light emits 68% less CO2 than a standard 40w incandescent bulb running 10 hours per day.