Upgrades such as new energy efficient lighting have helped slash energy use at the RiverCentre parking ramp in St. Paul, Minnesota by 50%. | Photo courtesy of City of St. Paul
The RiverCentre parking ramp in St. Paul, Minnesota, is racking up big savings. Energy-efficient improvements made to the structure by state and local officials have cut energy use by 50%, saving thousands of dollars annually. Learn more.