Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Friday, April 17, 2015 at 7:17 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
4/15/2015No OFO in Effect
4/16/2015No OFO in Effect
4/17/2015No OFO in Effect
4/18/2015No 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 4, posted 09:51 PM PT

Last updated for the Gas Day of 04/17/2015
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
MMcf4/14/20154/15/20154/16/20154/17/20154/18/20154/19/20154/20/2015
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100
4050 4068 405140864051
4000 4001 4016
3950
3900
38503854
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
4/17/2015
Forecast
for
4/18/2015
Forecast
for
4/19/2015
Forecast
for
4/20/2015
Beginning Inventory4068401640514086
Ending Inventory4016405140864051
Inventory Change-523535-35
 
Upper Limit4350430043004350
Difference*
(Upper Limit - Ending Inventory)
334249214299
 
Lower Limit4000390039004000
Difference*
(Ending Inventory - Lower Limit)
1615118651

*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 4, posted 09:51 PM PT

Last updated for the Gas Day of 04/17/2015
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
4/17/2015
Forecast
for
4/18/2015
Forecast
for
4/19/2015
Forecast
for
4/20/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 58.5
64.165.665.265.1
Demand
On-System Demand2,1901,9501,9702,070
Off-System Deliveries
SoCal Gas (KRS)225200200200
Southwest Gas3444
Kern River GT - HDL44000
Transmission Shrinkage30303030
Injection
PG&E Storage Injection (430 Maximum)*
Core, Market Center, and Pipeline Balancing
256266245215
Wild Goose Storage0154154154
Central Valley Storage19272727
Lodi Storage0000
Gill Ranch Storage73115115115
TOTAL SYSTEM DEMAND2,8392,7452,7442,814
Supply
Interconnect Supply
Gas Transmission Northwest1,3291,2521,2521,252
Ruby556612612612
California Production40404040
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett155216216216
Southern Trails39383838
El Paso Natural Gas393391391391
Transwestern196167167167
Withdrawal
PG&E Storage Withdrawal (1,133 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage25000
Central Valley Storage0000
Lodi Storage55636363
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2,7882,7792,7792,779
INVENTORY CHANGE
(Supply - Demand)
-523535-35
TOTAL CUSTOMER IMBALANCE-161-39-39-109

*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
4/17/2015
Forecast
for
4/18/2015
Forecast
for
4/19/2015
Forecast
for
4/20/2015
Injection
PG&E Storage
Core and Market Center
434426445415
Wild Goose Storage414583583583
Central Valley Storage39545454
Lodi Storage44444444
Gill Ranch Storage100135135135
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
8686125125
Wild Goose Storage439429429429
Central Valley Storage27272727
Lodi Storage98106106106
Gill Ranch Storage27212121
Pipeline Balancing Withdrawal92757575

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

Actual
for
4/14/2015
Actual
for
4/15/2015
Actual
for
4/16/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 58.5
56.962.665.4
Demand
On-System Demand2,4382,2512,248
Off-System Deliveries
SoCal Gas (KRS)234233260
Southwest Gas344
Kern River GT - HDL586871
Transmission Shrinkage282829
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
251264232
Wild Goose Storage000
Central Valley Storage2900
Lodi Storage000
Gill Ranch Storage485471
TOTAL SYSTEM DEMAND3,0892,9022,916
Supply
Interconnect Supply
Gas Transmission Northwest1,2881,3211,290
Ruby528516566
California Production394142
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett166122204
Southern Trails393910
El Paso Natural Gas336294324
Transwestern162242174
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage340405310
Central Valley Storage000
Lodi Storage346863
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY2,9333,0492,983
INVENTORY CHANGE
(Supply - Demand)
-15614767
TOTAL CUSTOMER IMBALANCE-2134754

*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
4/14/2015
Actual
for
4/15/2015
Actual
for
4/16/2015
Injection
PG&E Storage
Core and Market Center
401421350
Wild Goose Storage171176328
Central Valley Storage333339
Lodi Storage393941
Gill Ranch Storage878598
Pipeline Balancing Injection000
Withdrawal
PG&E Storage
Core and Market Center
868685
Wild Goose Storage507578634
Central Valley Storage272727
Lodi Storage77106109
Gill Ranch Storage393028
Pipeline Balancing Withdrawal647233
Balancing Gas
Imbalance Gas in Storage**2,4982,6332,671
PG&E Total Gas in Storage71,71571,96672,230

*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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