Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, May 27, 2015 at 7:12 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
5/25/2015No OFO in Effect
5/26/2015No OFO in Effect
5/27/2015No OFO in Effect
5/28/2015No 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 1, posted 07:36 AM PT

Last updated for the Gas Day of 05/27/2015
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf5/24/20155/25/201505/26/20155/27/20155/28/20155/29/20155/30/2015
4750
4700
4650
4600
4550
4500
4450 4469
4400
4350 4356
4300
4250
4200 4247
41504193
4100 4143
4050
4000
3950
3900 3941
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
5/27/2015
Forecast
for
5/28/2015
Forecast
for
5/29/2015
Forecast
for
5/30/2015
Beginning Inventory3994414342474356
Ending Inventory4143424743564469
Inventory Change149104109113
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
15753-56-169
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
243347456569

*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 1, posted 07:36 AM PT

Last updated for the Gas Day of 05/27/2015
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
5/27/2015
Forecast
for
5/28/2015
Forecast
for
5/29/2015
Forecast
for
5/30/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 64.9
63.365.166.666.8
Demand
On-System Demand1980200019251720
Off-System Deliveries
SoCal Gas (KRS)170212212212
Southwest Gas3333
Kern River GT - HDL0000
Transmission Shrinkage29323030
Injection
PG&E Storage Injection (400 Maximum)*
Core, Market Center, and Pipeline Balancing
298319296296
Wild Goose Storage05050200
Central Valley Storage0444
Lodi Storage847575125
Gill Ranch Storage21802121
TOTAL SYSTEM DEMAND2585277426152610
Supply
Interconnect Supply
Gas Transmission Northwest1269126912691269
Ruby596596590590
California Production38383838
SoCal Gas (KRS)0000
Kern River GT - HDL1472400
Kern River GT - Daggett581007575
Southern Trails0000
El Paso Natural Gas370600500500
Transwestern143252252252
Withdrawal
PG&E Storage Withdrawal (1845 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage113000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2733287927242724
INVENTORY CHANGE
(Supply - Demand)
149104109113
TOTAL CUSTOMER IMBALANCE228189181186

*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
5/27/2015
Forecast
for
5/28/2015
Forecast
for
5/29/2015
Forecast
for
5/30/2015
Injection
PG&E Storage
Core and Market Center
286433351351
Wild Goose Storage1855050200
Central Valley Storage38383838
Lodi Storage847575125
Gill Ranch Storage26262626
Pipeline Balancing Injection75757575
Withdrawal
PG&E Storage
Core and Market Center
63130130130
Wild Goose Storage298000
Central Valley Storage34343434
Lodi Storage0000
Gill Ranch Storage5555
Pipeline Balancing Withdrawal0000

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

Actual
for
5/24/2015
Actual
for
5/25/2015
Actual
for
05/26/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 64.9
61.261.50
Demand
On-System Demand170218530
Off-System Deliveries
SoCal Gas (KRS)168990
Southwest Gas330
Kern River GT - HDL010
Transmission Shrinkage33280
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
3512950
Wild Goose Storage2702700
Central Valley Storage68640
Lodi Storage1981630
Gill Ranch Storage95950
TOTAL SYSTEM DEMAND288828710
Supply
Interconnect Supply
Gas Transmission Northwest121811360
Ruby6096160
California Production38380
SoCal Gas (KRS)000
Kern River GT - HDL2700
Kern River GT - Daggett134730
Southern Trails40120
El Paso Natural Gas6345450
Transwestern2501980
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY295126190
INVENTORY CHANGE
(Supply - Demand)
63-2520
TOTAL CUSTOMER IMBALANCE189-2130

*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
5/24/2015
Actual
for
5/25/2015
Actual
for
05/26/2015
Injection
PG&E Storage
Core and Market Center
3723710
Wild Goose Storage5004990
Central Valley Storage95960
Lodi Storage2262050
Gill Ranch Storage36360
Pipeline Balancing Injection102710
Withdrawal
PG&E Storage
Core and Market Center
63870
Wild Goose Storage2312370
Central Valley Storage34340
Lodi Storage31410
Gill Ranch Storage000
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**244923210
PG&E Total Gas in Storage82009824200

*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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