Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Sunday, September 25, 2016 at 7:21 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
9/23/2016No OFO in Effect
9/24/2016No OFO in Effect
9/25/2016No OFO in Effect
9/26/2016No 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 2, posted 01:01 PM PT

Last updated for the Gas Day of 09/25/2016
Next update expected by 3:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf9/22/20169/23/20169/24/20169/25/20169/26/20169/27/20169/28/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
41504159 41974182
4100
4050 4098 406940624050
4000
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
9/25/2016
Forecast
for
9/26/2016
Forecast
for
9/27/2016
Forecast
for
9/28/2016
Beginning Inventory4197418240694062
Ending Inventory4182406940624050
Inventory Change-15-113-7-12
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
118231238250
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
282169162150

*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 2, posted 01:01 PM PT

Last updated for the Gas Day of 09/25/2016
Next update expected by 3:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
9/25/2016
Forecast
for
9/26/2016
Forecast
for
9/27/2016
Forecast
for
9/28/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 66.6
7676.873.368.8
Demand
On-System Demand1850202020001930
Off-System Deliveries
SoCal Gas (KRS)271270270270
Southwest Gas2222
Kern River GT - HDL50505050
Transmission Shrinkage27272727
Injection
PG&E Storage Injection (302 Maximum)*
Core, Market Center, and Pipeline Balancing
111364848
Wild Goose Storage0000
Central Valley Storage0044
Lodi Storage0000
Gill Ranch Storage13999
TOTAL SYSTEM DEMAND2324241424102340
Supply
Interconnect Supply
Gas Transmission Northwest1215126712671267
Ruby688698698698
California Production28282828
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett92202020
Southern Trails0000
El Paso Natural Gas160151151151
Transwestern103888888
Withdrawal
PG&E Storage Withdrawal (1256 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage53215075
Central Valley Storage151500
Lodi Storage2222
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2309230024032328
INVENTORY CHANGE
(Supply - Demand)
-15-113-7-12
TOTAL CUSTOMER IMBALANCE71-1077369

*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
9/25/2016
Forecast
for
9/26/2016
Forecast
for
9/27/2016
Forecast
for
9/28/2016
Injection
PG&E Storage
Core and Market Center
64641717
Wild Goose Storage32432400
Central Valley Storage771111
Lodi Storage50505050
Gill Ranch Storage6666
Pipeline Balancing Injection7507575
Withdrawal
PG&E Storage
Core and Market Center
28284343
Wild Goose Storage32935515075
Central Valley Storage222277
Lodi Storage51515151
Gill Ranch Storage1111
Pipeline Balancing Withdrawal0000

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

Actual
for
9/22/2016
Actual
for
9/23/2016
Actual
for
9/24/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 66.6
626670.8
Demand
On-System Demand191417721713
Off-System Deliveries
SoCal Gas (KRS)236264254
Southwest Gas232
Kern River GT - HDL512750
Transmission Shrinkage272629
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
3755113
Wild Goose Storage08590
Central Valley Storage000
Lodi Storage0200
Gill Ranch Storage0525
TOTAL SYSTEM DEMAND226622572275
Supply
Interconnect Supply
Gas Transmission Northwest127212551217
Ruby648658686
California Production302929
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett5614128
Southern Trails000
El Paso Natural Gas135144193
Transwestern9788105
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage20815
Lodi Storage000
Gill Ranch Storage3600
TOTAL SYSTEM SUPPLY229521962374
INVENTORY CHANGE
(Supply - Demand)
29-6199
TOTAL CUSTOMER IMBALANCE3138215

*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
9/22/2016
Actual
for
9/23/2016
Actual
for
9/24/2016
Injection
PG&E Storage
Core and Market Center
111164
Wild Goose Storage377346372
Central Valley Storage787
Lodi Storage497350
Gill Ranch Storage6611
Pipeline Balancing Injection177277
Withdrawal
PG&E Storage
Core and Market Center
282828
Wild Goose Storage366274276
Central Valley Storage271922
Lodi Storage565151
Gill Ranch Storage1501
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**334933793610
PG&E Total Gas in Storage938999389893953

*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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