energy primarily from a sustainable, non-fossil fuel source known as biomass.

Enwave Seattle provides a heat source for use in heating buildings, generating hot water, humidity control, and sterilization. Its energy is distributed by Enwave Seattle through 18 miles of pipe under approximately one-square mile of downtown Seattle to many of the city’s office buildings, hospitals, hotels, and college campuses.

In addition to purchasing thermal energy for heat, Enwave Seattle’s customers use it for a myriad of other applications. Hospitals use its high temperature steam for onsite purposes, including sterilization of medical instruments. The company’s heat source is also used for humidity control at institutions like the Seattle Art Museum, where art installations have precise humidity and temperature requirements. Several of Seattle’s artisan food and beverage producers, such as Beecher’s Cheese and the Pike Brewing Company, use Enwave Seattle’s heat source in their production processes.

In the fall of 2009, the company began its conversion to renewable energy by installing a new boiler that can burn clean urban waste wood, making it possible to use renewable biomass as its primary source of fuel. At full load, the biomass boiler reduces the carbon footprint of Enwave Seattle and its customers by 50 percent, and provides an improvement to the region’s sustainability goals.

Enwave Seattle was founded in 1893 and is based in Seattle, Washington.