Source: 2011 Inc. 500 and GeekWire, August 23, 2011. D Square Energy ranked as the 3,803rd fastest growing private company in the nation as compiled by Inc. magazine. Over the past three years, revenues have grown by 38% to $5.5 million. D Square installs, repairs, and maintains diesel, natural gas, and propane generators for the commercial, industrial, and residential markets. Its services help reduce energy consumption and eliminate downtime of critical data center, health care, public safety, and public utility facilities.