The month-ahead nomination deadline is 11:30 a.m. CST, one business day before the first of the month. The day-ahead nomination deadline is 11:30 a.m. CST, one business day before the gas day. 

If the deadline has passed, please submit a Gas Transportation Nomination Form (PDF).

The MDN applies to app accounts and will be set based on the highest monthly usage over the previous 12 monthly billing periods, multiplied by 1.5 then divided by 10. The gas transport system, Supply Choice Portal, will not allow nominations to be entered above the MDN. 

EUT needs the completed Supplier Authorization Form at least three business days before the effective date of the change. 

Customers must notify Ameren by July 1 of their intent to switch services for an effective date of November 1. 

Requirements prior to July 1

• A Notification Form for conversion between company supplied gas service and gas transportation service must be received by Ameren, directly from the customer, prior to July 1 for service to be effective November 1 or a later date that is mutually agreeable between the customer and Ameren. 

Requirements prior to July 15

• Obtain the Transportation Contract from the CSA.
• Sign and execute the Transportation Contract by July 15 for the transportation service to be effective November 1.

Requirements prior to October 1

• The customer's metering equipment and telephone lines must be in place by October 1 for service to commence November 1 or thereafter. 
• The customer shall arrange and pay for the installation and monthly costs of a commercial telephone line and 120-volt AC electrical power source, at a location designated by Ameren, to facilitate the remote interrogation of the electronic recording meter by Ameren. The telephone line is a dedicated line with specific requirements. Please contact your CSA if you require more information on the necessary requirements. 

Requirements prior to November 1

• The Ameren Access Agreement is required for customers and brokers to gain access to the Gas Choice portal. After the signed form is received, a UserID and Password will be assigned. 
• If you would like to use a marketer/supplier, complete the Broker Authorization Form. This form gives marketers the authority to nominate on your behalf and to access your account information or usage reports. 
• The Account Agent Designation Statement is required if you want to designate an Agent to act on your behalf for all purposes in arranging and managing services for presently active account(s). A completed Account Agent Designation Statement is required to change your mailing address to the supplier's mailing address. The completed form should be emailed to mybusinessamerenmissouri@ameren.com.

General Requirements

• The tariff has the same notification provision if you wish to switch from transportation service to supply service. Notification must be received by Ameren, prior to July 1 each year to be effective November 1 or a later date that is mutually agreeable by Ameren and you. 
• Where a change of gas service is approved, you must remain on the requested supply service for a minimum of 12 months. 

Phone Service & Power Supply to the Gas Meter

The requirements below apply to all gas transportation customers, except K-12 schools participating in the Missouri School Aggregation program using less than 100,000 CCF in an annual period. 

• Customers who elect gas transportation service must arrange and pay for the installation and monthly costs of a dedicated phone line to the meter. This enables Ameren to remotely interrogate the meter and obtain dally gas usage for balancing purposes as required per the Gas Transportation tariff.
• Customers who elect gas transportation service must arrange and pay for the installation of 120-volt AC electrical power supply to an Ameren-supplied Power Supply box. The power supply is necessary to run the interval usage recording device installed on the meter to obtain daily usage for balancing purposes. 

See the documents below for more detailed information pertaining to these customer metering requirements

• Customer Requirements (PDF)
• Wiring Diagram (PDF)

A customer may designate an agent for obtaining and managing services for the customer for a specific presently active account(s). An agent shall not be allowed to initiate a new account. If the customer designates an agent, the agent shall act on behalf of the customer for all purposes in arranging and managing services for the customer for specific presently active account(s). The agent shall have on behalf of its Principle, the customer, all rights and obligations, the customer would have under Ameren's tariffs. The designation of an agent shall not give the customer or its agent any additional rights than the customer would have under Ameren's tariffs. The designation of an agent shall not relieve the customer of any obligation that it has under any tariff, including but not limited to the obligation to pay the customer's bill. 

The customer shall be permitted to designated only one external "mail to" recipient, such as an agent, to receive customer billing statements and associated correspondence for a specific amount. 

In order to designate an agent, the customer shall complete an Account Agent Designation Statement provided by Ameren, and not as part of any other document. The customer shall deliver the statement to Ameren. Upon receipt of the statement by Ameren, Ameren shall recognize the agent as the customer's representative. The customer may terminate the agency relationship only by delivery to Ameren a statement revoking the Agency Designation Statement. Ameren will assume this customer-agent relationship will remain in force until a Termination of Account Agent Designation Statement is received revoking the designation of this agent to act on the customer's behalf. 

Ameren shall treat all representations and requests of the agent as if made by the customer. Ameren may rely on any and all representations made by the agent on behalf of the customer. Ameren shall not be held liable for any action it takes in good faith reliance upon a representation or request made by the agent. The customer shall indemnify and hold Ameren harmless against any claim arising out of any action that Ameren takes in response to the agent's request. 

If a customer designates an agent, Ameren shall communicate with the agent on all matters that it would be required to communicate with the customer under its tariffs. Ameren may also, but is not required to, communicate with the customer directly on any matter for which it has a right to communicate with the customer under its tariffs. 

If you would like to switch to another supplier, please complete a Broker Authorization Form with the information of your new supplier. 

Note: On a case-by-case basis, you may be able to switch from transport service to Ameren's natural gas supply service. Contact End User Transportation and we will assist you with your request.