Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, September 2, 2015 at 7:27 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
8/31/2015No OFO in Effect
9/1/2015No OFO in Effect
9/2/2015No OFO in Effect
9/3/2015No 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.

Return to top


System Inventory Status

Plan 1, posted 09:11 AM PT

Last updated for the Gas Day of 09/02/2015
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
MMcf8/30/20158/31/20159/1/20159/2/20159/3/20159/4/20159/5/2015
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200424742164205
4150 4192
4100
4050
4000 404140244034
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.

Return to top


System Inventory Summary

Forecast
for
9/2/2015
Forecast
for
9/3/2015
Forecast
for
9/4/2015
Forecast
for
9/5/2015
Beginning Inventory4205419240414024
Ending Inventory4192404140244034
Inventory Change-13-151-1710
 
Upper Limit4300435043004300
Difference*
(Upper Limit - Ending Inventory)
108309276266
 
Lower Limit3900400039003900
Difference*
(Ending Inventory - Lower Limit)
29241124134

*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.

Return to top


PG&E Supply and Demand Forecast
(Net Physical Flows)

Plan 1, posted 09:11 AM PT

Last updated for the Gas Day of 09/02/2015
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
9/2/2015
Forecast
for
9/3/2015
Forecast
for
9/4/2015
Forecast
for
9/5/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 69.6
68.466.765.666.9
Demand
On-System Demand2105208520551835
Off-System Deliveries
SoCal Gas (KRS)358358358358
Southwest Gas2222
Kern River GT - HDL80808080
Transmission Shrinkage29292929
Injection
PG&E Storage Injection (267 Maximum)*
Core, Market Center, and Pipeline Balancing
6212420116
Wild Goose Storage136136136136
Central Valley Storage0000
Lodi Storage00097
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2772281426802653
Supply
Interconnect Supply
Gas Transmission Northwest1237123712371237
Ruby855855855855
California Production38383838
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett32323232
Southern Trails79797979
El Paso Natural Gas74747474
Transwestern313313313313
Withdrawal
PG&E Storage Withdrawal (1685 Maximum)*
Core, Market Center, and Pipeline Balancing
20202020
Wild Goose Storage0000
Central Valley Storage12121212
Lodi Storage96000
Gill Ranch Storage3333
TOTAL SYSTEM SUPPLY2759266326632663
INVENTORY CHANGE
(Supply - Demand)
-13-151-1710
TOTAL CUSTOMER IMBALANCE-22-158-251

*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.

Return to top


PG&E Storage Activity Forecast
(Scheduled Volumes)

Forecast
for
9/2/2015
Forecast
for
9/3/2015
Forecast
for
9/4/2015
Forecast
for
9/5/2015
Injection
PG&E Storage
Core and Market Center
187297193289
Wild Goose Storage521521521521
Central Valley Storage0000
Lodi Storage0323296
Gill Ranch Storage5555
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
145193193193
Wild Goose Storage385385385385
Central Valley Storage12121212
Lodi Storage9632320
Gill Ranch Storage9999
Pipeline Balancing Withdrawal0000

Return to top


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

Actual
for
8/30/2015
Actual
for
8/31/2015
Actual
for
9/1/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 69.6
7172.271.2
Demand
On-System Demand188621322150
Off-System Deliveries
SoCal Gas (KRS)377381330
Southwest Gas222
Kern River GT - HDL747769
Transmission Shrinkage292829
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
638258
Wild Goose Storage100100140
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND253028032777
Supply
Interconnect Supply
Gas Transmission Northwest117311771254
Ruby901902823
California Production333636
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett15424
Southern Trails786471
El Paso Natural Gas149140126
Transwestern225223276
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage222220
Lodi Storage60204110
Gill Ranch Storage0027
TOTAL SYSTEM SUPPLY265627722766
INVENTORY CHANGE
(Supply - Demand)
126-31-11
TOTAL CUSTOMER IMBALANCE21888-0

*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.

Return to top


PG&E Recent Storage Activity
(Scheduled Volumes)

Actual
for
8/30/2015
Actual
for
8/31/2015
Actual
for
9/1/2015
Injection
PG&E Storage
Core and Market Center
237257161
Wild Goose Storage586581543
Central Valley Storage110
Lodi Storage471838
Gill Ranch Storage415
Pipeline Balancing Injection828027
Withdrawal
PG&E Storage
Core and Market Center
256255130
Wild Goose Storage486486399
Central Valley Storage232220
Lodi Storage106222148
Gill Ranch Storage2734
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**265827412336
PG&E Total Gas in Storage937749383793919

*Until yesterday's final figures are released, all numbers 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.

Return to top