Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, May 4, 2016 at 7:18 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
5/2/2016No OFO in Effect
5/3/2016No OFO in Effect
5/4/2016No OFO in Effect
5/5/2016No 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 04:14 PM PT

Last updated for the Gas Day of 05/04/2016
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
MMcf5/1/20165/2/20165/3/20165/4/20165/5/20165/6/20165/7/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
41504191
4100 4114
4050 4069
4000 40124037
3950 3982
3900 3914
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
5/4/2016
Forecast
for
5/5/2016
Forecast
for
5/6/2016
Forecast
for
5/7/2016
Beginning Inventory3914401240374069
Ending Inventory4012403740694114
Inventory Change98253245
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
288263231186
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
112137169214

*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 04:14 PM PT

Last updated for the Gas Day of 05/04/2016
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
5/4/2016
Forecast
for
5/5/2016
Forecast
for
5/6/2016
Forecast
for
5/7/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 61.2
6361.261.560.9
Demand
On-System Demand1875182017351545
Off-System Deliveries
SoCal Gas (KRS)180299299299
Southwest Gas4444
Kern River GT - HDL84232323
Transmission Shrinkage28292929
Injection
PG&E Storage Injection (321 Maximum)*
Core, Market Center, and Pipeline Balancing
61156219219
Wild Goose Storage100100
Central Valley Storage12777
Lodi Storage02424100
Gill Ranch Storage18000
TOTAL SYSTEM DEMAND2262236123392325
Supply
Interconnect Supply
Gas Transmission Northwest1411141314131413
Ruby477481481481
California Production33333333
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett16777
Southern Trails0000
El Paso Natural Gas248255255255
Transwestern159178178178
Withdrawal
PG&E Storage Withdrawal (1054 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage01600
Central Valley Storage0000
Lodi Storage16000
Gill Ranch Storage0333
TOTAL SYSTEM SUPPLY2360238623712371
INVENTORY CHANGE
(Supply - Demand)
98253245
TOTAL CUSTOMER IMBALANCE628595106

*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
5/4/2016
Forecast
for
5/5/2016
Forecast
for
5/6/2016
Forecast
for
5/7/2016
Injection
PG&E Storage
Core and Market Center
289268273273
Wild Goose Storage4544530101
Central Valley Storage67636363
Lodi Storage636363100
Gill Ranch Storage30303030
Pipeline Balancing Injection0757575
Withdrawal
PG&E Storage
Core and Market Center
223187129129
Wild Goose Storage45346900
Central Valley Storage56565656
Lodi Storage7939390
Gill Ranch Storage12343434
Pipeline Balancing Withdrawal5000

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

Actual
for
5/1/2016
Actual
for
5/2/2016
Actual
for
5/3/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 61.2
67.964.565.6
Demand
On-System Demand144119062013
Off-System Deliveries
SoCal Gas (KRS)262231292
Southwest Gas443
Kern River GT - HDL56672
Transmission Shrinkage302931
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
24318079
Wild Goose Storage21100
Central Valley Storage191812
Lodi Storage16410684
Gill Ranch Storage955938
TOTAL SYSTEM DEMAND247526002625
Supply
Interconnect Supply
Gas Transmission Northwest155614771509
Ruby352379477
California Production333435
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett907321
Southern Trails000
El Paso Natural Gas269245270
Transwestern185181244
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY248523912557
INVENTORY CHANGE
(Supply - Demand)
10-209-68
TOTAL CUSTOMER IMBALANCE143-127-93

*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
5/1/2016
Actual
for
5/2/2016
Actual
for
5/3/2016
Injection
PG&E Storage
Core and Market Center
276274272
Wild Goose Storage602445451
Central Valley Storage737368
Lodi Storage201196125
Gill Ranch Storage665954
Pipeline Balancing Injection150574
Withdrawal
PG&E Storage
Core and Market Center
131151202
Wild Goose Storage392455425
Central Valley Storage565656
Lodi Storage398739
Gill Ranch Storage121212
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**361526422515
PG&E Total Gas in Storage855968589186071

*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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