SNB Short Notice Balancing

Description of Service:

  • A firm service that helps facilitate the effective operation of a companion FT-SN contract by providing flexibility for balancing purposes using Mainline linepack. 
  • Designed to meet the needs of markets which require a flexible and firm gas supply to serve fluctuating demands with as little as 15 minutes notice (e.g. gas fired power generators).

Key Features and Benefits:

  • Unique features include reserved capacity and up to 96 nomination windows daily.
  • The shipper will nominate into or out of their SNB account as part of their FT-SN nominations.

How to Access this Service:

  • Bid for service through a TC Energy held Open Season. Notices are posted on the TC Energy website and detail the capacity offered as well as the bidding process. 
  • Shipper must sign an SNB contract for the accepted bid with TC Energy.
  • Requires a companion FT-SN contract to access the SNB service.
  • Shipper may also sign an Assignment Agreement with TC Energy and the holder of an existing SNB & FT-SN contract to take over all or a portion of that existing contract-holder’s service (i.e. the FT-SN contract and SNB contract must be assigned together to the same assignee).

For Further Information

Contact your Marketing Representatives, or via any of the options listed below.


The Pipe Line: 1.403.920.PIPE (7473)




Service Priority

Firm and reserved

Renewal Rights

Renewal minimum 1 year
1 years' notice required


TC Energy will build facilities with a minimum 15 year contract term


Assignments (with linked FT-SN)
Reserved capacity
Up to 96 nomination windows daily
Flow rate nomination required (GJ/hr)


Open Season
Awarded based on term x toll
Must also hold FT-SN contract

Term Minimum term is 1 year
Toll Monthly SNB demand toll
Uniform toll within a region



Please Note:
This service description is for informational purposes only. For more detailed descriptions, please review the Transportation Tariff which provides complete detail and supersedes the information provided on this page.

Related Information

Credit Procedures