This is probably the easiest area to make an immediate difference. By simply turning off unused lights and replacing incandescent with fluorescent bulbs can cut your lighting bill in half. Building or remodeling to bring in more natural light slashes energy use and offers healthier and more esthetic illumination.
American Council for an Energy Efficient Economy
ENERGY STAR
Products in more than 50 categories are eligible for the ENERGY STAR. They use less energy, save money, and help protect the environment. Ask for the ENERGY STAR.
ENERGY STAR Qualified Products
Light Bulbs and Fixtures