After one year of occupancy, Seattle’s Bullitt Center – a six-story office building – used 75 percent less energy than a new building that meets Seattle’s energy code, according to Architectural Record.
Consumption at the 52,000-sq-foot building was just 10kBtu per square foot, although one floor of the building is still unoccupied. But even when the building is fully leased, the mechanical and electrical engineers for the project, PAE, estimate that the building’s solar array will still send excess electricity to the grid, reports Architectural Record.
Energy saving features rely heavily on daylighting, including triple-glazed windows and passive climate controls.
The buildings’ occupants are also getting kudos for lower-than-expected plug loads attributable in part to an incentive scheme that keeps tenants aware of their energy usage.
A study earlier this year on virtual energy assessments conducted with nine Boston buildings found that plug loads represent a significant portion of energy use in commercial buildings and that tenant engagement and plug load reductions are currently under-incentivized by utilities and existing energy efficiency programs.
A doctoral student at Carnegie Mellon University has developed an intelligent dashboard to evaluate plug load energy savings in the workplace. Office workers who used the dashboard saved 35.4 percent in plug load energy compared to their colleagues.
Photo: Courtesy of Bullitt Center