Millstone Power Station

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Millstone generates 2,020 megawatts from its two operational units — enough electricity to power 500,000 homes. Unit 1 began commercial operation in December 1970, and ceased operating in July 1998. It is being decommissioned. Unit 2 began commercial operation in December 1975.

Unit 3 began operating in April 1986. Dominion acquired the station in March 2001.

Millstone is located in southeast Connecticut, three miles west-southwest of New London.

The station was named after the site’s historic granite quarry that produced high-quality millstones and structural building granite.

About the Environment

Continuing studies show that Millstone has very minimal effects on the environment. A radiological monitoring program has shown virtually no environmental impact from operation of the station. View our environmental policy statement.

Emergency Preparedness

Read our guidebook on emergency planning. You can also visit the Connecticut emergency site.

Additional Information

Read our media manual for general information on the station, nuclear power, radiation, plant components and systems, emergency procedures, security, and much more.

If you have additional questions about Millstone or want to know where to find information about nuclear energy, call (860) 444-5797 or send an e-mail.