Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Monday, September 26, 2016 at 7:16 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
9/24/2016No OFO in Effect
9/25/2016No OFO in Effect
9/26/2016No OFO in Effect
9/27/2016No 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 4, posted 09:51 PM PT

Last updated for the Gas Day of 09/26/2016
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf9/23/20169/24/20169/25/20169/26/20169/27/20169/28/20169/29/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150 41974197
4100 4127 4114
40504098 4084
4000 4039
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
9/26/2016
Forecast
for
9/27/2016
Forecast
for
9/28/2016
Forecast
for
9/29/2016
Beginning Inventory4197412740394084
Ending Inventory4127403940844114
Inventory Change-70-884530
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
173261216186
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
227139184214

*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 4, posted 09:51 PM PT

Last updated for the Gas Day of 09/26/2016
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
9/26/2016
Forecast
for
9/27/2016
Forecast
for
9/28/2016
Forecast
for
9/29/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 66.4
76.774.868.867.5
Demand
On-System Demand2220221520101970
Off-System Deliveries
SoCal Gas (KRS)271313313313
Southwest Gas2222
Kern River GT - HDL50525252
Transmission Shrinkage26272727
Injection
PG&E Storage Injection (327 Maximum)*
Core, Market Center, and Pipeline Balancing
36363636
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2605264524402400
Supply
Interconnect Supply
Gas Transmission Northwest1230124512451245
Ruby713721720720
California Production28282828
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett10666
Southern Trails0000
El Paso Natural Gas151201201201
Transwestern81444444
Withdrawal
PG&E Storage Withdrawal (1113 Maximum)*
Core, Market Center, and Pipeline Balancing
307300
Wild Goose Storage88121121121
Central Valley Storage64404040
Lodi Storage98111111
Gill Ranch Storage42666813
TOTAL SYSTEM SUPPLY2535255724852430
INVENTORY CHANGE
(Supply - Demand)
-70-884530
TOTAL CUSTOMER IMBALANCE-159-1545898

*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
9/26/2016
Forecast
for
9/27/2016
Forecast
for
9/28/2016
Forecast
for
9/29/2016
Injection
PG&E Storage
Core and Market Center
55111616
Wild Goose Storage343379380380
Central Valley Storage7777
Lodi Storage50505050
Gill Ranch Storage6666
Pipeline Balancing Injection00863
Withdrawal
PG&E Storage
Core and Market Center
28284343
Wild Goose Storage431501501501
Central Valley Storage70464646
Lodi Storage148616161
Gill Ranch Storage1232323
Pipeline Balancing Withdrawal757500

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

Actual
for
9/23/2016
Actual
for
9/24/2016
Actual
for
9/25/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 66.4
6670.875.7
Demand
On-System Demand177217131849
Off-System Deliveries
SoCal Gas (KRS)264254276
Southwest Gas321
Kern River GT - HDL275050
Transmission Shrinkage262928
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
5511384
Wild Goose Storage85900
Central Valley Storage000
Lodi Storage2000
Gill Ranch Storage5253
TOTAL SYSTEM DEMAND225722752290
Supply
Interconnect Supply
Gas Transmission Northwest125512171205
Ruby658686683
California Production292927
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett1412892
Southern Trails000
El Paso Natural Gas144193161
Transwestern88105102
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage81519
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY219623742290
INVENTORY CHANGE
(Supply - Demand)
-61990
TOTAL CUSTOMER IMBALANCE3821574

*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
9/23/2016
Actual
for
9/24/2016
Actual
for
9/25/2016
Injection
PG&E Storage
Core and Market Center
116464
Wild Goose Storage346372324
Central Valley Storage877
Lodi Storage735050
Gill Ranch Storage6116
Pipeline Balancing Injection727748
Withdrawal
PG&E Storage
Core and Market Center
282828
Wild Goose Storage274276329
Central Valley Storage192222
Lodi Storage515151
Gill Ranch Storage011
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**337936103674
PG&E Total Gas in Storage938989395394127

*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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