In 1960, the first commercial atomic energy reactor, and the third in the U.S., achieved a self-sustaining nuclear reaction. It began producing power for distribution on 10 Nov 1960. This was the $57 million Yankee Atomic Electric Company's plant at Rowe, Mass., on the Deerfield River. The pressurized light-water reactor produced 125,000 kilowatts of electricity. The company was formed by twelve New England utility companies which signed a contract with the Westinghouse Corporation as the principal contractor. It was permanently shut down on 26 Feb 1992, due to reactor vessel embrittlement, after more than 31 years of service. Decommissioning began in 1993.