Systemwide

Pacific Gas and Electric did not extend a two-day systemwide high-inventory OFO beyond Thursday.

Pacific Gas and Electric belatedly issued a systemwide Stage 2 high-inventory OFO for Wednesday on its California Gas Transmission system, setting penalties of $1/Dth for exceeding a 6% tolerance on positive daily imbalances. The OFO was extended through Thursday with much the same conditions except that the tolerance was tightened slightly to 5%.

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

Pacific Gas and Electric issued a systemwide Stage 2 high-inventory OFO for Saturday on its California Gas Transmission system, setting penalties of $1/Dth for exceeding a 5% tolerance on positive daily imbalances.

Tennessee lifted Sunday a systemwide OFO Action Alert that it had implemented Saturday to control positive imbalances.

Pacific Gas and Electric belatedly issued a systemwide Stage 2 high-inventory OFO for Wednesday on its California Gas Transmission system, setting penalties of $1/Dth for exceeding a positive imbalance of 8%. The OFO was extended through Thursday, when the tolerance will tighten to 5%.

Citing limited operational flexibility and mild weather, Tennessee issued a systemwide OFO Action Alert that will take effect Saturday for all balancing parties. They are required to maintain an actual daily flow rate not exceeding 2% of scheduled quantities or 500 Dth, whichever is greater, for overdeliveries into the system and undertakes from the system, Tennessee said.

Tennessee lifted a systemwide Imbalance Warning Monday but asked customers “to match physical flow with scheduled quantities and nominate all payback requests.”

Citing limited operational flexibility to manage imbalances, Tennessee said a systemwide Imbalance Warning will go into effect Saturday and require all delivery point operators “to keep actual daily takes out of the system equal to or greater than scheduled quantities regardless of their cumulative imbalance position. All receipt point operators are required to keep actual daily receipts into the system equal to or less than scheduled quantities regardless of their cumulative imbalance position.” If compliance is not sufficient, Tennessee said, it may take further actions, including contract- or meter-specific OFOs to maintain operational integrity.