United Illuminating provides safe, reliable electric service to customers in the greater New Haven and Bridgeport areas of Connecticut.

Welcome to United Illuminating! Whether you’re a new, returning or current customer, we’re happy to serve you. We work hard to make sure your needs receive the highest priority.

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By Check or Money order to The United Illuminating Company, P.O. Box 847818, Boston, MA 02284-7818 * Message and data rates may apply. Text STOP to 78418 to stop receiving The United …

United Illuminating (UI) is a wholly-owned subsidiary of AVANGRID, Inc. View the most current financial information, including quarterly and annual filings at AVANGRID.com.

Financial Information United Illuminating (UI) is a wholly-owned subsidiary of AVANGRID. Read more

Mail a Payment The United Illuminating Company P.O. Box 847818 Boston, MA 02284-7818

Pay by Mail Make your check payable to The United Illuminating Company and mail to: The United Illuminating Company P.O. Box 847818 Boston, MA 02284-7818 Please include your account …

When travelling outside of the United States, you may be unable to access your account due to strict firewalls that we have in place. These firewalls are used to protect the privacy of our customers and …