Forget CFLs and LEDs, the greenest way to light a room is obviously with sunlight. However, it's not always easy to get that sunlight into the darker corners of our homes.
At West Coast Green, we had the opportunity to chat with the people at Velux. They produce Sun Tunnel Skylights -- a tubular skylight that can bring sunlight into poorly lit places like closets, hallways, small bathrooms, etc.
The people at Velux assured us that installation of a Sun Tunnel is very quick and simple (as opposed to a traditional skylight). According to this article in Popular Mechanics, a Sun Tunnel can be installed by an "experienced person" in about 3 hours, without significantly disturbing your existing roofing.
We love the idea of using sunlight in the home as opposed to artificial light -- it's healthier and obviously uses less energy. According to the Velux web site, electric lighting accounts for one-fifth of the total electrical energy used in the U.S. We wonder how much of that energy is being used during daylight hours?