Imbalance

Transportation Notes

In an OFO notice, Questar said effective Thursday until further notice, it will not accept any due-pipeline imbalance payback nominations. “Due to the high inventory levels at Clay Basin [storage facility], the upcoming reservoir conditioning and injection test…Questar is restricting the receipt of gas that cannot be injected into Clay Basin or absorbed within system linepack.”

September 13, 2007

Transportation Notes

MRT lifted Thursday a System Protection Warning that had been implemented Wednesday.

March 15, 2007

Transportation Notes

Pacific Gas & Electric did not extend a systemwide high-inventory OFO beyond Saturday.

November 21, 2006

Transportation Notes

Southern California Gas declared a high-linepack OFO for Saturday, setting a 10% imbalance tolerance for excess deliveries into its system. When its storage injection capacity falls below 850 MMcf/d, confirmations of firm injection nominations will be reduced as outlined in the “Storage Injection Capacity Reductions” notice posted July 1, 2005 on its bulletin board, SoCalGas said.

May 15, 2006

Transportation Notes

NOVA restored its imbalance tolerance range to the normal +4/-4 Tuesday.

March 1, 2006

Transportation Notes

Northwest declared a Stage II (8% imbalance tolerance) Unauthorized Overrun Entitlement for all Receiving Party customers located north of the Kemmerer (WY) Compressor Station, effective Friday until further notice. Northwest said it declared the entitlement “in an effort to maintain its Jackson Prairie storage balance during the extremely cold weather forecast for the Pacific Northwest over the next few days.” In addition to urging customers to stay in balance, Northwest also asked customers who owe gas to the pipeline north of Kemmerer to arrange paybacks as soon as possible.

February 17, 2006

Transportation Notes

Pacific Gas & Electric issued a systemwide Stage 2 high-inventory OFO for Saturday. Penalties of $1/Dth were set for exceeding a positive daily imbalance tolerance of 5%.

January 9, 2006

Transportation Notes

MRT said a System Protection Warning initiated Dec. 31, in which the pipeline said it would be unable to schedule volumes that resulted in a net daily long imbalance position through Tuesday, will be lifted at the start of Wednesday’s gas day.

January 4, 2006

Transportation Notes

Pacific Gas & Electric issued a systemwide Stage 2 high-inventory OFO for Thursday, setting penalties at $1/Dth for exceeding a positive daily imbalance tolerance of 5%.

December 29, 2005

Transportation Notes

Westcoast, which only last Wednesday changed its imbalance tolerance range to zero pack and 20% draft because of excessive linepack (see Daily GPI, Nov. 30), swung in the other direction for Saturday’s gas day by setting a range of 20% pack and zero draft.

December 5, 2005
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