LEED puts a significant effort into energy efficiency. Its point total will often be the deciding factor in the level of achievement. With a possible ten points at stake, it is one of the most lucrative areas for harvesting points. Lighting efficiency plays a major role in this quest. The statistics are well known. Across the country lighting consumes somewhere near 25% of the energy use in the country. Depending on your building type it can be between 40 and 50% of the energy usage. (higher in office buildings, lower in factories, higher in hospitality industry, lower in medical facilities).