Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Tuesday, September 1, 2015 at 7:16 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
8/30/2015No OFO in Effect
8/31/2015No OFO in Effect
9/1/2015No OFO in Effect
9/2/2015No OFO in Effect

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 3, posted 03:21 PM PT

Last updated for the Gas Day of 09/01/2015
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf8/29/20158/30/20158/31/20159/1/20159/2/20159/3/20159/4/2015
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200 424742164227
4150
41004121 4111
4050
4000 4011
3950
3900 3930
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
9/1/2015
Forecast
for
9/2/2015
Forecast
for
9/3/2015
Forecast
for
9/4/2015
Beginning Inventory4216422741114011
Ending Inventory4227411140113930
Inventory Change11-116-100-81
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
73189289370
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
32721111130

*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 8:30 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 3, posted 03:21 PM PT

Last updated for the Gas Day of 09/01/2015
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
9/1/2015
Forecast
for
9/2/2015
Forecast
for
9/3/2015
Forecast
for
9/4/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 69.6
70.767.566.866.6
Demand
On-System Demand2130210520952075
Off-System Deliveries
SoCal Gas (KRS)329336336336
Southwest Gas2222
Kern River GT - HDL77808080
Transmission Shrinkage29272727
Injection
PG&E Storage Injection (279 Maximum)*
Core, Market Center, and Pipeline Balancing
44000
Wild Goose Storage143136136136
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2753268626762656
Supply
Interconnect Supply
Gas Transmission Northwest1238114611461146
Ruby828830830830
California Production38383838
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett22363636
Southern Trails79797979
El Paso Natural Gas125737373
Transwestern277283283283
Withdrawal
PG&E Storage Withdrawal (1685 Maximum)*
Core, Market Center, and Pipeline Balancing
0202020
Wild Goose Storage0000
Central Valley Storage20121212
Lodi Storage110000
Gill Ranch Storage27525757
TOTAL SYSTEM SUPPLY2764257025762576
INVENTORY CHANGE
(Supply - Demand)
11-116-100-81
TOTAL CUSTOMER IMBALANCE20-198-182-162

*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
9/1/2015
Forecast
for
9/2/2015
Forecast
for
9/3/2015
Forecast
for
9/4/2015
Injection
PG&E Storage
Core and Market Center
161151191191
Wild Goose Storage543521521521
Central Valley Storage0000
Lodi Storage38323232
Gill Ranch Storage5555
Pipeline Balancing Injection13000
Withdrawal
PG&E Storage
Core and Market Center
130145193193
Wild Goose Storage399385385385
Central Valley Storage20121212
Lodi Storage148323232
Gill Ranch Storage34999
Pipeline Balancing Withdrawal0757575

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

Actual
for
8/29/2015
Actual
for
8/30/2015
Actual
for
8/31/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 69.6
71.47172.2
Demand
On-System Demand206218862132
Off-System Deliveries
SoCal Gas (KRS)372377381
Southwest Gas222
Kern River GT - HDL847477
Transmission Shrinkage292928
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
396382
Wild Goose Storage105100100
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND269325302803
Supply
Interconnect Supply
Gas Transmission Northwest118411731177
Ruby903901902
California Production373336
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett15154
Southern Trails817864
El Paso Natural Gas135149140
Transwestern224225223
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
200
Wild Goose Storage000
Central Valley Storage222222
Lodi Storage13160204
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY273226562772
INVENTORY CHANGE
(Supply - Demand)
39126-31
TOTAL CUSTOMER IMBALANCE11421888

*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
8/29/2015
Actual
for
8/30/2015
Actual
for
8/31/2015
Injection
PG&E Storage
Core and Market Center
238237257
Wild Goose Storage586586581
Central Valley Storage111
Lodi Storage474718
Gill Ranch Storage441
Pipeline Balancing Injection578280
Withdrawal
PG&E Storage
Core and Market Center
258256255
Wild Goose Storage486486486
Central Valley Storage232322
Lodi Storage178106222
Gill Ranch Storage227
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**245826582741
PG&E Total Gas in Storage937379377493837

*Until yesterday's final figures are released, all numbers 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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