Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Saturday, April 30, 2016 at 7:12 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
4/28/2016No OFO in Effect
4/29/2016System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
4/30/2016No OFO in Effect
5/1/2016No 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 04:26 PM PT

Last updated for the Gas Day of 04/30/2016
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
MMcf4/27/20164/28/20164/29/20164/30/20165/1/20165/2/20165/3/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200 4226 42204206
4150 4156
4100
40504089
4000 4021
3950 3975
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
4/30/2016
Forecast
for
5/1/2016
Forecast
for
5/2/2016
Forecast
for
5/3/2016
Beginning Inventory4156422042064021
Ending Inventory4220420640213975
Inventory Change64-14-185-46
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
8094279325
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
32030612175

*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 04:26 PM PT

Last updated for the Gas Day of 04/30/2016
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
4/30/2016
Forecast
for
5/1/2016
Forecast
for
5/2/2016
Forecast
for
5/3/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 60.6
67.567.465.265.2
Demand
On-System Demand1360140015701600
Off-System Deliveries
SoCal Gas (KRS)252228228228
Southwest Gas4444
Kern River GT - HDL16292929
Transmission Shrinkage32282828
Injection
PG&E Storage Injection (322 Maximum)*
Core, Market Center, and Pipeline Balancing
23124324375
Wild Goose Storage379197197197
Central Valley Storage32242424
Lodi Storage161175175175
Gill Ranch Storage99545454
TOTAL SYSTEM DEMAND2565238125522414
Supply
Interconnect Supply
Gas Transmission Northwest1536153415341534
Ruby408344344344
California Production31313131
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett61818181
Southern Trails0000
El Paso Natural Gas394212212212
Transwestern199165165165
Withdrawal
PG&E Storage Withdrawal (1049 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2629236723672367
INVENTORY CHANGE
(Supply - Demand)
64-14-185-46
TOTAL CUSTOMER IMBALANCE10825-136-149

*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
4/30/2016
Forecast
for
5/1/2016
Forecast
for
5/2/2016
Forecast
for
5/3/2016
Injection
PG&E Storage
Core and Market Center
334276276366
Wild Goose Storage611602602602
Central Valley Storage41737373
Lodi Storage207175175175
Gill Ranch Storage105666666
Pipeline Balancing Injection7575750
Withdrawal
PG&E Storage
Core and Market Center
126108108216
Wild Goose Storage233405405405
Central Valley Storage10494949
Lodi Storage46000
Gill Ranch Storage58121212
Pipeline Balancing Withdrawal00075

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

Actual
for
4/27/2016
Actual
for
4/28/2016
Actual
for
4/29/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 60.6
56.561.762
Demand
On-System Demand172715761508
Off-System Deliveries
SoCal Gas (KRS)228315270
Southwest Gas455
Kern River GT - HDL0158
Transmission Shrinkage313231
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
192202181
Wild Goose Storage240250350
Central Valley Storage0033
Lodi Storage11572182
Gill Ranch Storage7287100
TOTAL SYSTEM DEMAND261225552669
Supply
Interconnect Supply
Gas Transmission Northwest134414881523
Ruby527467409
California Production323233
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett1216553
Southern Trails0100
El Paso Natural Gas425430390
Transwestern181201192
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY263126922599
INVENTORY CHANGE
(Supply - Demand)
19137-70
TOTAL CUSTOMER IMBALANCE32234-80

*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
4/27/2016
Actual
for
4/28/2016
Actual
for
4/29/2016
Injection
PG&E Storage
Core and Market Center
323323336
Wild Goose Storage498506582
Central Valley Storage161341
Lodi Storage167117227
Gill Ranch Storage8086115
Pipeline Balancing Injection627423
Withdrawal
PG&E Storage
Core and Market Center
142143126
Wild Goose Storage266273223
Central Valley Storage101510
Lodi Storage464646
Gill Ranch Storage585858
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**315333683320
PG&E Total Gas in Storage845598480285056

*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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