DENVER, Colorado " The 113-year-old Colorado Capitol building in Denver has been honored for energy efficiency, winning a Leadership in Energy and Environmental Design certification.
The certification, known by the acronym LEED, was presented Thursday for upgrades the state has made over the past four years.
Gov. Bill Ritter says the state spent $23 million for water conservation, low-energy lights, recycling and landscaping.
The upgrades were made under a program that provides the equipment with a guarantee the state will make its money back over 19 years.
Colorado is the first state to win LEED certification for its capitol.