Energy.gov

The Energy Department's National Lab builds one of the world’s most energy efficient data centers.

Des Moines' Green & Main intends to intends to renovate an abandoned 1930s grocery store into a mixed-use facility with LEED Platinum certification – a prestigious badge of energy efficiency and sustainable building practices.

Some people talk about the clean energy economy as if it’s a hypothetical future development, but the fact is that it’s already here and poised for tremendous growth in the coming years.

Berkeley Lab's iconic building, the Advanced Light Source — yes, the same one that had a cameo in Ang Lee’s “The Incredible Hulk” -- is getting a cool new roof. Check out the photos of the cyclotron in 1941, and now.

One company is actually recycling energy that has already been used to power manufacturing plants, which is helping facilities cut their energy expenses by up to 20 percent.

Five projects will help Dayton, Ohio residents save money and help them to conserve energy.

After 95 percent of Greensburg, Kan., was leveled by a tornado, a major dealership rebuilds to achieve energy savings of nearly 50 percent over similar structures built to code.

One of the first production builders in the US to offer zero-energy construction, family-owned Artistic Homes is changing with the times: “From a business standpoint, we have a better product for the customer because it’s energy-efficient, and we’ve set up a practice that is sustainable in the long-term."