Seattle Public Libraries

Client: O'Brien and Company
Project Size: 21 buildings - 220,000 sf (total)


  • Utility Billing Analysis
  • Verification of Energy Savings

Seattle’s library branches serve as gathering and learning centers for all the major neighborhoods of the City. They are a diverse group of buildings, varying widely in age and building design.

360 Analytics was engaged by O’Brien and Company to provide the Seattle Office of Sustainability with an analysis of operations and maintenance (O&M) measures implemented across this portfolio of buildings. To do this, 360 analyzed three years of monthly natural gas and electric utility bills for all sites, and created basic models that represent the weather normalized energy performance of each building before and after operational changes were made. The study was complicated by making O&M adjustments in conjunction with changes to building operation hours. However, 360 developed a novel approach to use available hourly energy interval data to account for this influence, effectively illustrating the range of savings for all buildings.