The United Illuminating Company Phone Numbers and Emails

Toll-Free Number:

  • (800) 722-5584
    Toll Free

Customer Service:

  • (203) 499-2000


  • (800) 722-5584
    Toll Free

The United Illuminating Company Contact Information

The United Illuminating Company Website:

The United Illuminating Company Online Chat:

Corporate Office Address:

The United Illuminating Company
New Haven , Connecticut 06510
United States

Other Info (opening hours):


Monday - Friday: 7:00 am - 7:00 pm

Mailing Address:

P.O. Box 847818

Boston, MA 02284-7818


+1 (203) 499 5973
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How to contact The United Illuminating Company

Customers reach out to utility companies for customer support about various issues including:
- Account setup and account information
- Reconnection procedures and delays
- Billing and payment issues
- Cancellation and change of service provider
- Service transfer issues and change of address
- Emergency issues
- Utility outage
- Delivery issues

Below is a look at the necessary information and documents required when calling utility companies about the various issues.

Account number queries, sign up, and disconnection queries

Usually, when calling to set up an account with a utility company you will need to provide the following:
- identification documents e.g. ID, Driver’s License, or Social security number;
- your physical address e.g recent bill;
- start date;
- mailing address through which your billing invoice will be sent;
- contact information including phone number and email address.

Similar requirements apply for reconnection or disconnection, though some companies also require a deposit or a disconnection fee from you. To get your account number, you will need to provide:
- your name;
- zip code;
- social security number.

If the utility company has an app or website where you set up an account, you will be required to provide the following information during the sign up process:
- phone number;
- email address;
- zip code;
- physical and mailing address;
- utility account number (if already issued);
- first and last name.

For account number queries, call customer service with your:
- zip code;
- address;
- full name.

Supply issues or outages

When calling utility companies to report or check on the status of an outage, you will be asked for:
- account number;
- zip code;
- address;
- personal identification information such as the last 4 digits of your social security number, first name, and last name.

Billing and payment issues

The most common complaints to utility companies regarding billing and payments include
being overcharged or being billed but the amount does not reflect on the company’s records resulting in a disconnection.

When calling customer service for either scenario, you need the following:
- billing invoice for the particular period;
- bank statement or receipt showing the overcharged amount or the amount you paid.

In the case of an overcharge or double charge, the company may initiate a refund to your payment method. Otherwise, contact your card issuer or payment method provider to seek a chargeback. You will be required to provide:
- proof of transaction e.g bank statement;
- a copy of the invoice for the particular period.

Emergency issues

You may call your utility company for emergency technical issues such as outage. However, for emergencies that may be life-threatening, call 911 to have the issue resolved immediately and then notify the utility company. In both cases, you will be asked to describe in detail what is happening and to provide your location.

Since there may be differences in the customer service procedures and document requirements from one utility company to another, you must review the particular company’s help center for any specific requirements. Or, you could contact customer support to find out the documents and information you need to provide to facilitate the resolution of a given issue.

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The United Illuminating Company Rating Based on 2 Reviews

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Summary of The United Illuminating Company Customer Service Calls

00:08 AVG CALL

Top Reasons of Customers Calls

Consumers Call the Most From

Why Do People Call The United Illuminating Company Customer Service?

Payments and Charges Question:

  • “Payment arrangement”
  • “Bill”
  • “About bills”

Staff Question:

  • “Start service (new house)”
  • “Set up service”

Request for Information Question:

  • “Status on an outage”

Cards Question:

  • “So they can change my pin number im lock out”

Product/ Service Question:

  • “New connection”

Other Question:

  • “Tree fell on power lines”
  • “Change of address”
  • “Power shut off”


Top The United Illuminating Company Services

Customer Care

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The United Illuminating Company reviews and complaints

The United Illuminating Company is ranked 173 out of 1453 in Utility category

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