Granite State Gas Transmission, Inc.
Third Revised Volume No. 1
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Effective Date: 01/04/2020, Docket: RP01- 58-001, Status: Accepted
Original Sheet No. 340 Original Sheet No. 340 : Effective
36. Imbalance Netting and Trading
(a) Definitions. For purposes of this Section 36 the following definitions
shall be applicable:
(1) "Operational Impact Area" is the term used to describe Transporter's
designation of the largest possible area(s) on its system in which imbalances
have a similar operational effect.
(2) "Netting" is the term used to describe the process of resolving
imbalances for Shipper within an Operational Impact Area. There are two
types of Netting: (a) summing is the accumulation of all imbalances above
any applicable tolerances for Shipper or agent; and (b) offsetting is the
combination of positive or negative imbalances above any applicable tolerances
for Shipper or agent.
(b) Month-end Imbalances.
(1) Transporter shall allow Shipper (including agents of Shipper) to
net imbalances within the same Operational Impact Area on and across service
agreements with Shipper and to trade imbalances within the same Operational
(2) Transporter shall provide Shippers the ability to post and trade
imbalances until at least the close of the seventeenth (17th) business
day of the month.
(3) Transporter shall provide Shippers the ability to view and, upon
request, download posted imbalances.
(4) Imbalances to be posted for trading should be authorized by Shipper.
(5) Authorizations to post imbalances that are received by Transporter by
11:45a.m. (C.T.) should be effective by 8:00a.m. (C.T.) the next business day.
Imbalances previously authorized for posting should be posted on or before the ninth
(9th) business day of the month.
(6) Transporter is not required to post zero imbalances.
(7) Netting, posting, and trading of imbalances shall be accomplished
based upon Transporter's current method for accounting for imbalances.
(8) Transporter shall enable the imbalance trading process by: receiving the
Request for Imbalance Trade, receiving the Imbalance Trade Confirmation, sending the
Imbalance Trade Notification, and reflecting the trade prior to or on the next
monthly Shipper Imbalance.
(9) When trading imbalances, Shippers shall specify a quantity.
(10) Imbalance trades can only be withdrawn by the initiating trader and
only prior to the confirming trader's confirmation of the trade. Imbalance trades
are considered final when confirmed by the confirming trader and effectuated
(11) After receipt of an Imbalance Trade Confirmation, Transporter shall send
the Imbalance Trade Notification to the initiating trader and the confirming trader
no later than twelve (12) noon (C.T.) the next business day.
(12) To account for any imbalances after imbalance trading, where Transporter
associates such imbalance with a service agreement, Shipper and Transporter shall
agree to designate one of Shipper's valid service agreements in the Operational
Impact Area where the original imbalance occurred, for such purpose.