Bellevue City Hall received the prestigious Energy Star award from the U.S. Environmental Protection Agency in September 2008, for superior energy efficiency. At that time it was the only city hall in Washington and one of just seven nationwide to earn this award.
As a result of a host of energy-conserving features installed during the remodel of City Hall, the city spends $70,000 less per year on utilities for the building than Qwest had. Energy-efficient equipment and systems at City Hall include:
- High-efficiency boilers and chillers;
- Variable speed drives for hot-water pumps, cooling-tower fans and supply/return air fans;
- Exhaust shaft heat recovery system;
- Low-emittance windows that minimize heat flowing through glass to the outside;
- Radiant heating and cooling in some areas;
- Natural ventilation options in the concourse;
- Terra cotta and metal cladding with additional insulation on exterior walls;
- Office layout that maximizes access to natural light;
- Low-flow faucet aerators and urinals; and
- Energy-efficient lighting, with motion and light sensors, with more planned in 2010.
In addition, when the building was remodeled, much of the existing infrastructure and materials were reused. The site is located next to a public-transit center and is also within walking distance for many services and restaurants. Bike storage, lockers and showers are available on-site to encourage alternative forms of transportation.