Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Tuesday, June 19, 2018 at 7:16 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
6/17/2018No OFO in Effect
6/18/2018No OFO in Effect
6/19/2018No OFO in Effect
6/20/2018No 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.

Return to top


System Inventory Status

Plan 1, posted 08:11 AM PT

Last updated for the Gas Day of 06/19/2018
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
MMcf6/16/20186/17/20186/18/20186/19/20186/20/20186/21/20186/22/2018
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100
4050 4062
40004047 4049400540034030
3950
3900 3946
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.

Return to top


System Inventory Summary

Forecast
for
6/19/2018
Forecast
for
6/20/2018
Forecast
for
6/21/2018
Forecast
for
6/22/2018
Beginning Inventory4049400540034030
Ending Inventory4005400340303946
Inventory Change-44-227-84
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
295297270354
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
10510313046

*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.

Return to top


PG&E Supply and Demand Forecast
(Net Physical Flows)

Plan 1, posted 08:11 AM PT

Last updated for the Gas Day of 06/19/2018
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
6/19/2018
Forecast
for
6/20/2018
Forecast
for
6/21/2018
Forecast
for
6/22/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 68.1
69.367.370.776.6
Demand
On-System Demand1610160016451755
Off-System Deliveries
SoCal Gas (KRS)324324324324
Southwest Gas7777
Kern River GT - HDL23232323
Transmission Shrinkage27272727
Injection
PG&E Storage Injection (383 Maximum)*
Core, Market Center, and Pipeline Balancing
250184110110
Wild Goose Storage22484848
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2262221121822292
Supply
Interconnect Supply
Gas Transmission Northwest1333133313331333
Ruby300300300300
California Production24242424
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett3333
Southern Trails0000
El Paso Natural Gas245245245245
Transwestern292292292292
Withdrawal
PG&E Storage Withdrawal (996 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage5555
Lodi Storage9000
Gill Ranch Storage7777
TOTAL SYSTEM SUPPLY2218220922092209
INVENTORY CHANGE
(Supply - Demand)
-44-227-84
TOTAL CUSTOMER IMBALANCE-80-62-35-145

*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.

Return to top


PG&E Storage Activity Forecast
(Scheduled Volumes)

Forecast
for
6/19/2018
Forecast
for
6/20/2018
Forecast
for
6/21/2018
Forecast
for
6/22/2018
Injection
PG&E Storage
Core and Market Center
351310237237
Wild Goose Storage316484848
Central Valley Storage27272727
Lodi Storage36000
Gill Ranch Storage31313131
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
51515151
Wild Goose Storage294000
Central Valley Storage32323232
Lodi Storage45000
Gill Ranch Storage38383838
Pipeline Balancing Withdrawal50757575

Return to top


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

Actual
for
6/16/2018
Actual
for
6/17/2018
Actual
for
6/18/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 68.1
63.564.767.3
Demand
On-System Demand134612521440
Off-System Deliveries
SoCal Gas (KRS)279280282
Southwest Gas567
Kern River GT - HDL000
Transmission Shrinkage272727
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
283290272
Wild Goose Storage606060
Central Valley Storage000
Lodi Storage18918385
Gill Ranch Storage727359
TOTAL SYSTEM DEMAND226321702232
Supply
Interconnect Supply
Gas Transmission Northwest135913691347
Ruby291234296
California Production222122
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett063
Southern Trails000
El Paso Natural Gas241233233
Transwestern307307307
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage01510
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY222021852219
INVENTORY CHANGE
(Supply - Demand)
-4315-13
TOTAL CUSTOMER IMBALANCE7415753

*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.

Return to top


PG&E Recent Storage Activity
(Scheduled Volumes)

Actual
for
6/16/2018
Actual
for
6/17/2018
Actual
for
6/18/2018
Injection
PG&E Storage
Core and Market Center
341368356
Wild Goose Storage387387376
Central Valley Storage272727
Lodi Storage230230135
Gill Ranch Storage484844
Pipeline Balancing Injection482722
Withdrawal
PG&E Storage
Core and Market Center
505051
Wild Goose Storage330326333
Central Valley Storage323232
Lodi Storage454545
Gill Ranch Storage313134
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**252226692761
PG&E Total Gas in Storage762567659576940

*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.

Return to top