Bellevue, Washington / 526,131 SF
Key Center Bellevue is a 526,131 square foot Class A office tower. It includes 22 stories and 800 underground parking spaces and was built in 2000. The building has a built-up rooftop system with water-cooled central cooling plant and terminal FPVAV with electric heat. The scope of this project included an energy audit, control system improvements, HVAC retro-commissioning and performance management services to deliver and validate the guaranteed financial results. System efficiency is continually managed via a formal Performance Management program to ensure persistence in savings. Project was commissioned in 2009.
Objective-driven, load-based commissioning of the building systems has resulted in a 38.4% reduction in energy consumption which is equivalent to an annual avoided cost of $315,694 or $0.47 per square foot. The Energy Star Rating (ESR) has increased by 16 points to a 97. The equivalent carbon reduction is 4,920 metric tons per year.