F24-S Service

Do you want firm injection or withdrawal rights post Timely nomination cycle?  How about firm all day on 13 nomination cycles?

Increase your nomination throughout the day without relying on interruptible transport (IT) or overrun.  

Our F24-S service enables you to access firm injections and withdrawals all day using any of our 13 nominations cycles. This service offers exceptional flexibility to shippers who have varying storage injection or withdrawal needs throughout the gas day, or to those shippers who enter into transactions after the Timely nomination cycle.


Service Highlights

  • Enhancement to a new or existing firm storage service
  • Firm daily service - on all five NAESB nomination cycles plus additional eight nomination cycles
  • This service transforms the firm injections and/or firm withdrawal parameters contained in the underlying storage contract into a "firm all day" service
  • Overrun applies only to the underlying storage contract  injections/withdrawals
  • Quantity of gas injected or withdrawn in any hour cannot exceed the total daily contracted quantity divided by 20
    • Example:                                   
      • Daily firm withdrawal demand = 50,000 GJ/d
      • Hourly contract demand is 2,500 GJ/h (50,000 GJ/d / 20 hours)
      • Total flow at ID2 nomination cycle (12 hours remaining in gas day) cannot exceed 30,000 GJ (2,500 GJ/h x 12 hours)
  • Quantity of gas injected and withdrawn over entire gas day cannot exceed total daily contracted quantity
  • During the gas day, the time between nomination deadline and effective flow of gas is approximately two hours

Receipt & Delivery Points

  • Dawn

Pricing & Fuel

  • Negotiated rate
  • Billed monthly as a demand charge
  • No incremental fuel charges (notwithstanding fuel provided as per underlying storage contract)
  • No incremental variable charges (notwithstanding commodity charges required as per underlying storage contract)


Contract Term

  • From one year to ten years

Service Eligibility

  • Available to all shippers who hold a storage contract with firm injection and/or withdrawal parameters
  • Term of storage contract must be equal to or longer than the term of F24-S contract
  • Quantity of firm storage injections/withdrawals must be equal to or greater than quantity of F24-S contract

Complementary Services

  • F24-T (Firm all day transport)
  • UPBS (upstream pipeline balancing service)
  • DPBS (downstream pipeline balancing service)
  • Additional firm storage injection/withdrawals can be added to an existing storage contract

How to Request Service

Hub Contract Application Form
Contact your account manager.
Learn more

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