Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Tuesday, January 24, 2017 at 7:38 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
1/22/2017No OFO in Effect
1/23/2017No OFO in Effect
1/24/2017No OFO in Effect
1/25/2017No 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 10:03 AM PT

Last updated for the Gas Day of 01/24/2017
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
MMcf1/21/20171/22/20171/23/20171/24/20171/25/20171/26/20171/27/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100 4123 4147
40504057
4000 4011 40174000
3950
3900 3930
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
1/24/2017
Forecast
for
1/25/2017
Forecast
for
1/26/2017
Forecast
for
1/27/2017
Beginning Inventory4011393040174000
Ending Inventory3930401740004147
Inventory Change-8187-17147
 
Upper Limit4450445044504450
Difference*
(Upper Limit - Ending Inventory)
520433450303
 
Lower Limit4000400040004000
Difference*
(Ending Inventory - Lower Limit)
-70170147

*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 10:03 AM PT

Last updated for the Gas Day of 01/24/2017
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
1/24/2017
Forecast
for
1/25/2017
Forecast
for
1/26/2017
Forecast
for
1/27/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 48.7
43.644.644.643.8
Demand
On-System Demand3195313031452980
Off-System Deliveries
SoCal Gas (KRS)114114114114
Southwest Gas12121212
Kern River GT - HDL68686868
Transmission Shrinkage22222222
Injection
PG&E Storage Injection (226 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND3411334633613196
Supply
Interconnect Supply
Gas Transmission Northwest901901901901
Ruby511511511511
California Production28282828
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett3333
Southern Trails0000
El Paso Natural Gas327327327327
Transwestern89898989
Withdrawal
PG&E Storage Withdrawal (1453 Maximum)*
Core, Market Center, and Pipeline Balancing
596723633633
Wild Goose Storage424400400400
Central Valley Storage137137137137
Lodi Storage140140140140
Gill Ranch Storage175175175175
TOTAL SYSTEM SUPPLY3330343333433343
INVENTORY CHANGE
(Supply - Demand)
-8187-17147
TOTAL CUSTOMER IMBALANCE-1681-8481

*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
1/24/2017
Forecast
for
1/25/2017
Forecast
for
1/26/2017
Forecast
for
1/27/2017
Injection
PG&E Storage
Core and Market Center
5453636
Wild Goose Storage269000
Central Valley Storage0000
Lodi Storage43434343
Gill Ranch Storage63636363
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
670748689689
Wild Goose Storage693400400400
Central Valley Storage137137137137
Lodi Storage183183183183
Gill Ranch Storage142142142142
Pipeline Balancing Withdrawal75757575

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

Actual
for
1/21/2017
Actual
for
1/22/2017
Actual
for
1/23/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 48.7
50.748.545.6
Demand
On-System Demand248426933081
Off-System Deliveries
SoCal Gas (KRS)654851
Southwest Gas131414
Kern River GT - HDL003
Transmission Shrinkage242424
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND258627793173
Supply
Interconnect Supply
Gas Transmission Northwest839860840
Ruby645658658
California Production272728
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett46467
Southern Trails000
El Paso Natural Gas318301330
Transwestern134133141
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
53142366
Wild Goose Storage307338350
Central Valley Storage898989
Lodi Storage38134136
Gill Ranch Storage21118117
TOTAL SYSTEM SUPPLY251928453061
INVENTORY CHANGE
(Supply - Demand)
-6766-112
TOTAL CUSTOMER IMBALANCE-7-49-228

*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
1/21/2017
Actual
for
1/22/2017
Actual
for
1/23/2017
Injection
PG&E Storage
Core and Market Center
308304293
Wild Goose Storage329329329
Central Valley Storage000
Lodi Storage434343
Gill Ranch Storage143143143
Pipeline Balancing Injection2800
Withdrawal
PG&E Storage
Core and Market Center
389476649
Wild Goose Storage653653681
Central Valley Storage898989
Lodi Storage79176176
Gill Ranch Storage164164164
Pipeline Balancing Withdrawal066105
Balancing Gas
Imbalance Gas in Storage**43034477
PG&E Total Gas in Storage705177046470226

*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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