Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, June 20, 2018 at 7:21 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
6/18/2018No OFO in Effect
6/19/2018No OFO in Effect
6/20/2018No OFO in Effect
6/21/2018No 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 03:56 PM PT

Last updated for the Gas Day of 06/20/2018
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
MMcf6/17/20186/18/20186/19/20186/20/20186/21/20186/22/20186/23/2018
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100
40504062
4000 4049401840374017
3950 39583968
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
6/20/2018
Forecast
for
6/21/2018
Forecast
for
6/22/2018
Forecast
for
6/23/2018
Beginning Inventory4018403740173958
Ending Inventory4037401739583968
Inventory Change19-20-5910
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
263283342332
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
1371175868

*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 3, posted 03:56 PM PT

Last updated for the Gas Day of 06/20/2018
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
6/20/2018
Forecast
for
6/21/2018
Forecast
for
6/22/2018
Forecast
for
6/23/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 68.2
6669.776.580.7
Demand
On-System Demand1740173017951725
Off-System Deliveries
SoCal Gas (KRS)303348348348
Southwest Gas7777
Kern River GT - HDL24242424
Transmission Shrinkage27262626
Injection
PG&E Storage Injection (383 Maximum)*
Core, Market Center, and Pipeline Balancing
273134109109
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage19000
TOTAL SYSTEM DEMAND2393227023102240
Supply
Interconnect Supply
Gas Transmission Northwest1368139213921392
Ruby291242242242
California Production24242424
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett3333
Southern Trails0000
El Paso Natural Gas238205205205
Transwestern292321321321
Withdrawal
PG&E Storage Withdrawal (1005 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage130333333
Central Valley Storage18333
Lodi Storage47101010
Gill Ranch Storage0171717
TOTAL SYSTEM SUPPLY2412225022502250
INVENTORY CHANGE
(Supply - Demand)
19-20-5910
TOTAL CUSTOMER IMBALANCE54-5-122-52

*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
6/20/2018
Forecast
for
6/21/2018
Forecast
for
6/22/2018
Forecast
for
6/23/2018
Injection
PG&E Storage
Core and Market Center
330307236236
Wild Goose Storage325320320320
Central Valley Storage14202020
Lodi Storage45363636
Gill Ranch Storage1111
Pipeline Balancing Injection50000
Withdrawal
PG&E Storage
Core and Market Center
511745151
Wild Goose Storage455353353353
Central Valley Storage32232323
Lodi Storage92464646
Gill Ranch Storage38181818
Pipeline Balancing Withdrawal007575

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

Actual
for
6/17/2018
Actual
for
6/18/2018
Actual
for
6/19/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 68.2
64.767.367.3
Demand
On-System Demand125214101630
Off-System Deliveries
SoCal Gas (KRS)280312333
Southwest Gas676
Kern River GT - HDL0010
Transmission Shrinkage272726
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
290272242
Wild Goose Storage60600
Central Valley Storage000
Lodi Storage183850
Gill Ranch Storage73590
TOTAL SYSTEM DEMAND217022322248
Supply
Interconnect Supply
Gas Transmission Northwest136913471360
Ruby234296291
California Production212222
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett630
Southern Trails000
El Paso Natural Gas233233252
Transwestern307307292
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage15100
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY218522192217
INVENTORY CHANGE
(Supply - Demand)
15-13-31
TOTAL CUSTOMER IMBALANCE15783-117

*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
6/17/2018
Actual
for
6/18/2018
Actual
for
6/19/2018
Injection
PG&E Storage
Core and Market Center
368356359
Wild Goose Storage387376325
Central Valley Storage272726
Lodi Storage23013536
Gill Ranch Storage484433
Pipeline Balancing Injection27220
Withdrawal
PG&E Storage
Core and Market Center
505151
Wild Goose Storage326333299
Central Valley Storage323232
Lodi Storage454545
Gill Ranch Storage313438
Pipeline Balancing Withdrawal0066
Balancing Gas
Imbalance Gas in Storage**266927612619
PG&E Total Gas in Storage765957726877268

*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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