Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Saturday, November 18, 2017 at 5:21 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
11/16/2017System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
11/17/2017No OFO in Effect
11/18/2017No OFO in Effect
11/19/2017System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High 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 4, posted 10:17 PM PT

Last updated for the Gas Day of 11/18/2017
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf11/15/201711/16/201711/17/201711/18/201711/19/201711/20/201711/21/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350 4370
4300 4318
4250 4262
4200
4150 4197
4100
4050 4082
40004025
3950 3965
3900
3850
3800
3750
3700
3650
3600
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
11/18/2017
Forecast
for
11/19/2017
Forecast
for
11/20/2017
Forecast
for
11/21/2017
Beginning Inventory4262431843704197
Ending Inventory4318437041974082
Inventory Change5652-173-115
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
-18-70103218
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
418470297182

*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 4, posted 10:17 PM PT

Last updated for the Gas Day of 11/18/2017
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
11/18/2017
Forecast
for
11/19/2017
Forecast
for
11/20/2017
Forecast
for
11/21/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 54.6
50.452.857.861.7
Demand
On-System Demand2,0402,0502,1401,980
Off-System Deliveries
SoCal Gas (KRS)141142142142
Southwest Gas7777
Kern River GT - HDL44363636
Transmission Shrinkage25252525
Injection
PG&E Storage Injection (285 Maximum)*
Core, Market Center, and Pipeline Balancing
0080
Wild Goose Storage0000
Central Valley Storage16161616
Lodi Storage0000
Gill Ranch Storage32197519
TOTAL SYSTEM DEMAND2,3052,2942,4482,224
Supply
Interconnect Supply
Gas Transmission Northwest1,0661,0621,0621,062
Ruby440440440440
California Production31313131
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett4444
Southern Trails35353535
El Paso Natural Gas221179179179
Transwestern319319319319
Withdrawal
PG&E Storage Withdrawal (797 Maximum)*
Core, Market Center, and Pipeline Balancing
247102
Wild Goose Storage37373737
Central Valley Storage0000
Lodi Storage1841691690
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2,3602,3462,2752,109
INVENTORY CHANGE
(Supply - Demand)
5652-173-115
TOTAL CUSTOMER IMBALANCE12246-183-125

*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
11/18/2017
Forecast
for
11/19/2017
Forecast
for
11/20/2017
Forecast
for
11/21/2017
Injection
PG&E Storage
Core and Market Center
195194194128
Wild Goose Storage606606606606
Central Valley Storage30303030
Lodi Storage419190
Gill Ranch Storage19191919
Pipeline Balancing Injection82000
Withdrawal
PG&E Storage
Core and Market Center
275266130130
Wild Goose Storage643643643643
Central Valley Storage14141414
Lodi Storage1871871870
Gill Ranch Storage0000
Pipeline Balancing Withdrawal0000

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

Actual
for
11/15/2017
Actual
for
11/16/2017
Actual
for
11/17/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 54.6
58.655.351.4
Demand
On-System Demand2,2412,2722,150
Off-System Deliveries
SoCal Gas (KRS)112101154
Southwest Gas999
Kern River GT - HDL575675
Transmission Shrinkage242425
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage26260
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND2,4702,4872,413
Supply
Interconnect Supply
Gas Transmission Northwest926919943
Ruby504522515
California Production292625
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett000
Southern Trails353433
El Paso Natural Gas172138247
Transwestern295331338
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
116229169
Wild Goose Storage13050240
Central Valley Storage000
Lodi Storage142154201
Gill Ranch Storage17240
TOTAL SYSTEM SUPPLY2,3662,4272,710
INVENTORY CHANGE
(Supply - Demand)
-104-60297
TOTAL CUSTOMER IMBALANCE-67-61293

*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
11/15/2017
Actual
for
11/16/2017
Actual
for
11/17/2017
Injection
PG&E Storage
Core and Market Center
147142142
Wild Goose Storage496611510
Central Valley Storage303030
Lodi Storage43364
Gill Ranch Storage644
Pipeline Balancing Injection200
Withdrawal
PG&E Storage
Core and Market Center
266353305
Wild Goose Storage628663746
Central Valley Storage141414
Lodi Storage189189198
Gill Ranch Storage151711
Pipeline Balancing Withdrawal0185
Balancing Gas
Imbalance Gas in Storage**4,2514,2734,506
PG&E Total Gas in Storage95,07094,95394,724

*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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