Energy efficiency is the use of technology that requires less energy to perform the same function. Using a compact fluorescent light bulb (CFL) that requires less energy, rather than an incandescent bulb, to produce the same amount of light is an example of energy efficiency. The EPA’s ENERGY STAR® label on appliances and electronic equipment identifies energy-efficient products. What’s more, buildings can be ENERGY STAR certified as well, signifying that they perform much more efficiently than similar buildings across the country. The ENERGY STAR building label can then be used to quality for further green building certifications, such as LEED, Green Globes, and the AIA 2030 Commitment.