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Bill Boyes didn't anticipate incredible savings when he started green renovation plans in 2001 for the North Boulder (Colo.) Recreation Center. Natural gas prices were much lower then, and the solar system the city had adopted had an estimated 18-year payback.
Boyes found himself in a good position, though. As natural gas prices rose from 62 cents to 85 cents per therm, the payback on the system fell to just four to six years. Today, the facility's solar system saves a whopping $15,000 a year.
"[The system] paid for itself in energy savings in a very short time," says Boyes, the city's facilities and fleet manager. "And there's a noticeable difference in ...