Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Tuesday, February 21, 2017 at 5:38 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
2/19/2017No OFO in Effect
2/20/2017No OFO in Effect
2/21/2017System Wide OFO in Effect5% Stage 1 at $ .25 /Dth Low Inventory
2/22/2017System Wide OFO in Effect6% Stage 1 at $ .25 /Dth Low Inventory

When an OFO or EFO has been called, customers' supplies are required to be within the tolerance requirement of daily usage to avoid noncompliance penalties. The criteria for complying with an OFO or EFO are described here.

For additional information, please contact the PG&E Scheduling Helpline at (800) 343-4743.

While updates to the OFO Outlook are posted here, customers should use INSIDEtracc as their primary source for OFO notification and updated information. For specific end-use customer information, please see INSIDEtracc.

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System Inventory Status

Plan 5, posted 05:19 AM PT

Last updated for the Gas Day of 02/20/2017
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf2/17/20172/18/20172/19/20172/20/20172/21/20172/22/20172/23/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
41004119 4105
4050
4000 40234015
3950 3976
3900
3850
3800 3802
3750
3700
3650
3600 3609
Within Operating Limits
Outside Operating Limits

All numbers are expressed in MMcf/day. When the forecast pipeline ending inventory exceeds the upper pipeline inventory operating limit or falls below the lower pipeline inventory operating limit, an OFO may be called to maintain the integrity and reliability of the gas transportation system.


Note: Historical data for yesterday is not available until mid-morning today.

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System Inventory Summary

Forecast
for
2/20/2017
Forecast
for
2/21/2017
Forecast
for
2/22/2017
Forecast
for
2/23/2017
Beginning Inventory4015410539763802
Ending Inventory4105397638023609
Inventory Change90-129-174-193
 
Upper Limit4350435043504350
Difference*
(Upper Limit - Ending Inventory)
245374548741
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
20576-98-291

*Forecast differences of less than 0 for the day after the current gas day (day 1) indicate that that PG&E may call an OFO to maintain pipeline integrity. Caution: This is PG&E's forecast of system inventory. Because market behavior and forecast loads can vary widely, this forecast may change significantly within the gas day and should therefore be used with caution. Forecasts further into the future are more likely to change than days closer to the current gas day e.g., the forecast for gas day 3 is subject to more change than the forecast for day 1.
All numbers are expressed in MMcf.
When an OFO has been called for the day after the current gas day (day 1), plans after the first plan of the gas day (posted by 8:00 AM) will often reflect changed market behavior and will show inventory projections within the established limits.

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PG&E Supply and Demand Forecast
(Net Physical Flows)

Plan 5, posted 05:19 AM PT

Last updated for the Gas Day of 02/20/2017
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
2/20/2017
Forecast
for
2/21/2017
Forecast
for
2/22/2017
Forecast
for
2/23/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 52
56.551.747.646.1
Demand
On-System Demand2,1122,2302,4752,590
Off-System Deliveries
SoCal Gas (KRS)34616161
Southwest Gas12121212
Kern River GT - HDL0000
Transmission Shrinkage30292929
Injection
PG&E Storage Injection (182 Maximum)*
Core, Market Center, and Pipeline Balancing
3000
Wild Goose Storage251219970
Central Valley Storage0222
Lodi Storage18317500
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2,6252,7272,6752,693
Supply
Interconnect Supply
Gas Transmission Northwest1,1751,1231,1431,143
Ruby492463463463
California Production26282828
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett246221221221
Southern Trails0000
El Paso Natural Gas372364364364
Transwestern161165165165
Withdrawal
PG&E Storage Withdrawal (1,344 Maximum)*
Core, Market Center, and Pipeline Balancing
1541444939
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage90906777
TOTAL SYSTEM SUPPLY2,7142,5992,5002,500
INVENTORY CHANGE
(Supply - Demand)
90-129-174-193
TOTAL CUSTOMER IMBALANCE-79-180-239-258

*Maxima for injection and withdrawal apply to current day only.
Note: All numbers are expressed in MMcf/d. Differences may exist between these figures and those shown in PG&E's INSIDEtracc. This data is PG&E's best estimate using operational data.

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PG&E Storage Activity Forecast
(Scheduled Volumes)

Forecast
for
2/20/2017
Forecast
for
2/21/2017
Forecast
for
2/22/2017
Forecast
for
2/23/2017
Injection
PG&E Storage
Core and Market Center
218218219219
Wild Goose Storage680670970
Central Valley Storage99999999
Lodi Storage28427600
Gill Ranch Storage21102121
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
335375268268
Wild Goose Storage43345100
Central Valley Storage97979797
Lodi Storage10110100
Gill Ranch Storage12121212
Pipeline Balancing Withdrawal122757575

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PG&E Recent Supply and Demand Data
(Net Physical Flows)

Actual
for
2/17/2017
Actual
for
2/18/2017
Actual
for
2/19/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 52
5552.353.4
Demand
On-System Demand2,0981,8672,090
Off-System Deliveries
SoCal Gas (KRS)1156151
Southwest Gas666
Kern River GT - HDL000
Transmission Shrinkage312829
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage235270290
Central Valley Storage000
Lodi Storage174328223
Gill Ranch Storage2300
TOTAL SYSTEM DEMAND2,6822,5602,689
Supply
Interconnect Supply
Gas Transmission Northwest1,1841,1451,194
Ruby783491490
California Production282627
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett27216246
Southern Trails7500
El Paso Natural Gas373323351
Transwestern90163164
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
027125
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage07384
TOTAL SYSTEM SUPPLY2,5612,4642,681
INVENTORY CHANGE
(Supply - Demand)
-121-96-8
TOTAL CUSTOMER IMBALANCE-51-179-203

*Until yesterday's final figures are released, all numbers in this column will appear as 0.
Note: All numbers are expressed in MMcf/d. Differences may exist between these figures and those shown in PG&E's INSIDEtracc. This data is PG&E's best estimate using operational data.

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PG&E Recent Storage Activity
(Scheduled Volumes)

Actual
for
2/17/2017
Actual
for
2/18/2017
Actual
for
2/19/2017
Injection
PG&E Storage
Core and Market Center
285220216
Wild Goose Storage657719708
Central Valley Storage999999
Lodi Storage231382278
Gill Ranch Storage52621
Pipeline Balancing Injection5700
Withdrawal
PG&E Storage
Core and Market Center
315265287
Wild Goose Storage431433433
Central Valley Storage979797
Lodi Storage605353
Gill Ranch Storage101313
Pipeline Balancing Withdrawal074148
Balancing Gas
Imbalance Gas in Storage**1,033796701
PG&E Total Gas in Storage64,44364,47064,350

*Until yesterday's final figures are released, all numbers (expressed in MMcf/d) in this column will appear as 0.
** Suspension of pipeline balancing injection or withdrawal may occur if Imbalance Gas in Storage exceeds balancing inventory limits. If Imbalance Gas in Storage is greater than 4.040 Bcf, pipeline balancing injection may not be available. If Imbalance Gas in Storage is at or below 0.0 Bcf, balancing withdrawal will not be available.
The daily change of Imbalance Gas in Storage may not equal the daily Pipeline Balancing. This is because Pipeline Balancing is the entire system balancing required for the day and Imbalance Gas in Storage is only the Cumulative Imbalance portion of the entire system imbalance gas in storage. PG&E may include the entire system imbalance gas as the Imbalance Gas in Storage sometime in the future.

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