Gas Supplier Information in Connecticut

Here you’ll find valuable information and helpful tools to successfully operate within the Eversource gas system in Connecticut. 

If you would find it useful to have additional information added to the site that we currently do not provide, please contact us.

If you are a registered supplier simply go to the on the Online Services section. If you are not registered, please email us to register.

Operator Handbook

Although the Operator Handbook was written to be in compliance with our Rules and Regulations, if there are any inconsistencies between the policies and procedures found in this Handbook and our Gas Rules and Regulations, Tariffs, or any state or federal law, Eversource is not responsible. The Operator is responsible for complying with all laws.

Currently the Operator Handbook is currently under revision. Please visit the Gas Tariffs & Rules page for currently effective tariffs.

If you have any questions you may call 860-665-3518.

For reference information, please click on the links below.

Current Loss Factor

Effective January 1, 2022, the five-year average of gas unaccounted for = 1.1462%.  

The transportation loss factor = 0.98853, which is calculated by taking one minus the percentage gas unaccounted for (1 - .011462 = 0.98853) rounded to the fifth decimal place.

The transportation loss factor is changed on a calendar year basis.

Department & Inquiries Contact / E-mail Phone Common Requests
Billing Customer Service 888-688-7267 Charges & payments related to your bill
Copy of your bill
Receipt of customers' bills (if payment agent)
Change to your mailing address
Billing issues
Customer Information -
Wire Transfer
Tom Denisky 860-728-4642 Banking instructions for Wire Transfer
Scheduling Date for Wire Transfer
Receipt of Wire Transfer
Customer Information -
Wire Transfer
Cheryl Gervais

Elaine Somes

Electronic file containing the appropriate customer accounts for posting the monies
Customer Measurement -
Inaccurate Reads
Ronnie Ferraiolo 203-317-4405 Date for Metscan to be installed
Investigation for bad customer read or no usage
Customer do's and don'ts for Metscan installation
Specifics as to phone problems associated with Metscan installation
Gas Nominations Lori Reno
Nomination deadlines (FOM, subsequent & intra-day)
Review of discrepancies between nominations & deliveries. 
Details pertaining to correct procedures for nominating on the Yankee Gas system.
Transportation Services -
Status Reports
Monthly Update
Report (MUR)
Tatiana Moore
Processing of Gas Operator Switch Form
Customer usage not available at Yankee Gas Web site
Customer meter number
Inquiries regarding customer enrollment or switches (firm and interruptible service customers)
Transportation Services -

Tatiana Moore

Commencement & deadlines
Trade results
Inquiries related to the imbalance trade process
Transportation Services -
Pool Usage
Tatiana Moore
Changes to contact name/e-mail address for receipt of daily pool usage report
Investigation into why daily usage report is not being received
Information regarding why customer's usage not appearing in pool
Transportation Services - Rates/Regulatory Eric Soderman Explanation of rates and riders that impact the firm transportation program
Interest or status of becoming an approved third party gas supplier on the Yankee Gas system

Corporate Address

107 Selden Street
Berlin, CT 06037

Fax Numbers

  • Transportation Services: 860-665-6297
  • Gas Nominations: 860-665-6297
  • Customer Measurement: 203-317-4454
  • Large Customer Billing: 860-607-6157

Electronic documents are sensitive in nature. We are confident that each of you will act in accordance with acceptable industry standards of conduct and practices and state law, as mentioned in Section 2.C. and 19 of the Operator Agreement.

All the forms listed below can be filled out on online. Once the form is filled in, just use the print button at the bottom of the form to print a copy. If you need to clear the form of information, use the reset button that is located at the bottom of the form.