Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Saturday, December 10, 2016 at 7:17 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
12/8/2016System Wide OFO in Effect5% Stage 1 at $ .25 /Dth Low Inventory
12/9/2016System Wide OFO in Effect7% Stage 1 at $ .25 /Dth Low Inventory
12/10/2016No OFO in Effect
12/11/2016No 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 1, posted 08:12 AM PT

Last updated for the Gas Day of 12/10/2016
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
MMcf12/7/201612/8/201612/9/201612/10/201612/11/201612/12/201612/13/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250 42584266
4200 4233
4150
4100 4135 41414133
4050
40004008
3950
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
12/10/2016
Forecast
for
12/11/2016
Forecast
for
12/12/2016
Forecast
for
12/13/2016
Beginning Inventory4258426642334141
Ending Inventory4266423341414133
Inventory Change8-33-92-8
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
3467159167
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
366333241233

*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 1, posted 08:12 AM PT

Last updated for the Gas Day of 12/10/2016
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
12/10/2016
Forecast
for
12/11/2016
Forecast
for
12/12/2016
Forecast
for
12/13/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 49.7
54.147.750.352.4
Demand
On-System Demand2095250026952610
Off-System Deliveries
SoCal Gas (KRS)46464646
Southwest Gas12121212
Kern River GT - HDL0000
Transmission Shrinkage18181818
Injection
PG&E Storage Injection (306 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage20000
TOTAL SYSTEM DEMAND2191257627712686
Supply
Interconnect Supply
Gas Transmission Northwest671671671671
Ruby376376376376
California Production26262626
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett1111
Southern Trails0000
El Paso Natural Gas311311311311
Transwestern75757575
Withdrawal
PG&E Storage Withdrawal (1384 Maximum)*
Core, Market Center, and Pipeline Balancing
0308443443
Wild Goose Storage509509509509
Central Valley Storage41414141
Lodi Storage189189189189
Gill Ranch Storage0363636
TOTAL SYSTEM SUPPLY2199254326782678
INVENTORY CHANGE
(Supply - Demand)
8-33-92-8
TOTAL CUSTOMER IMBALANCE75-95-164-79

*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
12/10/2016
Forecast
for
12/11/2016
Forecast
for
12/12/2016
Forecast
for
12/13/2016
Injection
PG&E Storage
Core and Market Center
223227125125
Wild Goose Storage379379379379
Central Valley Storage52525252
Lodi Storage27272727
Gill Ranch Storage10101010
Pipeline Balancing Injection56000
Withdrawal
PG&E Storage
Core and Market Center
222461494494
Wild Goose Storage887887887887
Central Valley Storage94949494
Lodi Storage216216216216
Gill Ranch Storage46464646
Pipeline Balancing Withdrawal0757575

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

Actual
for
12/7/2016
Actual
for
12/8/2016
Actual
for
12/9/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 49.7
46.153.558.9
Demand
On-System Demand336727962231
Off-System Deliveries
SoCal Gas (KRS)948474
Southwest Gas11108
Kern River GT - HDL6160
Transmission Shrinkage191617
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND349729222330
Supply
Interconnect Supply
Gas Transmission Northwest955915915
Ruby345266285
California Production262628
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett000
Southern Trails000
El Paso Natural Gas12945117
Transwestern662227
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
966841415
Wild Goose Storage485510370
Central Valley Storage788078
Lodi Storage330279207
Gill Ranch Storage1146611
TOTAL SYSTEM SUPPLY349530492453
INVENTORY CHANGE
(Supply - Demand)
-2127123
TOTAL CUSTOMER IMBALANCE-176123313

*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
12/7/2016
Actual
for
12/8/2016
Actual
for
12/9/2016
Injection
PG&E Storage
Core and Market Center
899889
Wild Goose Storage367164455
Central Valley Storage232323
Lodi Storage4048
Gill Ranch Storage14110268
Pipeline Balancing Injection00185
Withdrawal
PG&E Storage
Core and Market Center
905990690
Wild Goose Storage832677819
Central Valley Storage101101101
Lodi Storage331288250
Gill Ranch Storage23010479
Pipeline Balancing Withdrawal175130
Balancing Gas
Imbalance Gas in Storage**237124522646
PG&E Total Gas in Storage948419385192946

*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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