Become a Supplier

Step 1

Complete the Supplier Information Form

Provide financial information as specified in the Tariff Section 21.2 – Credit Worthiness, including:

• Most recent Annual Report, audited 10K and 10Q;
• List of parent company and other affiliates and corporate structure
• Names, addresses, and telephone numbers of 3 trade references; and
• Names, addresses, and telephone numbers of banking institution contacts 

Submit appropriate fees

• Submit $50.00 for program credit evaluation fee

Please contact the Transportation Support Services Team at transportevaluations@nisource.com for accepted forms of payment.

Step 2

Review credit evaluation results

Once the credit evaluation has been completed, you will be notified of the results.

All credit evaluations are good for 12 calendar months. If you fail to enroll TS customers prior to the expiration of the 12 months, you will need to undergo a new credit evaluation and pay the applicable credit evaluation fee.

Step 3

File Exchange

We conduct business with suppliers of natural gas through an encrypted file exchange. In order to become a supplier on our system, you must conduct system testing to ensure that the integrity of the system and customer data is safe and secure.

To move through the onboarding process, you must provide a key IT contact to conduct testing. Once the key contact has been received and the credit evaluation is complete, we will communicate the requirements and timeline of the required testing. Generally, the testing can take four to six weeks.

To participate in an upcoming file exchange testing, please submit your key IT contact information by the due date to start the process. Our testing due dates are listed below.

• January 2025: Submission due by January 6, 2025
• April 2025: Submission due by April 7, 2025
• July 2025: Submission due by July 7, 2025
• October 2025: Submission due by October 6, 2025

You can submit your information to transportevaluations@nisource.com.

*Testing takes place on a quarterly basis.

Step 1

Be approved to do business

Step 2

Complete and submit documents

You will need to submit the following documents electronically to your assigned representative and mail the originals to the address provided above: 

• Maryland Aggregation Agreement (only applicable if you will be aggregating customers)

Step 3

Obtain access to Aviator

We use Aviator, an interactive web-based application, to enable you perform services, such as arranging for the transportation of gas on our system.

• Aviator User ID's are required by any party seeking access to the Aviator website
• Aviator Master ID's are only required by parties seeking to assign additional User ID's for others in their company
• Use an Aviator Amendment to update your Aviator User ID or Aviator Master ID
• Use Master User ID Agreement-Attachment A for multiple PSIDs (Meters)

Step 4

Review the Maryland Tariff

Review the Tariff to become knowledgeable of the TS program guidelines and services.