Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, January 18, 2017 at 7:18 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
1/16/2017No OFO in Effect
1/17/2017No OFO in Effect
1/18/2017No OFO in Effect
1/19/2017No 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.

Return to top


System Inventory Status

Plan 3, posted 03:59 PM PT

Last updated for the Gas Day of 01/18/2017
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf1/15/20171/16/20171/17/20171/18/20171/19/20171/20/20171/21/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150 4195
4100
40504070 4058 40744063
4000 4000
3950 3986
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
1/18/2017
Forecast
for
1/19/2017
Forecast
for
1/20/2017
Forecast
for
1/21/2017
Beginning Inventory4058400040744063
Ending Inventory4000407440634195
Inventory Change-5874-11132
 
Upper Limit4450445044504350
Difference*
(Upper Limit - Ending Inventory)
450376387155
 
Lower Limit4000400040003900
Difference*
(Ending Inventory - Lower Limit)
07463295

*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.

Return to top


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

Plan 3, posted 03:59 PM PT

Last updated for the Gas Day of 01/18/2017
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
1/18/2017
Forecast
for
1/19/2017
Forecast
for
1/20/2017
Forecast
for
1/21/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 48.1
49.950.347.650.2
Demand
On-System Demand2990276528252560
Off-System Deliveries
SoCal Gas (KRS)36515151
Southwest Gas12121212
Kern River GT - HDL0000
Transmission Shrinkage22242222
Injection
PG&E Storage Injection (298 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND3060285229112646
Supply
Interconnect Supply
Gas Transmission Northwest735851851851
Ruby647675558558
California Production28282828
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett3777
Southern Trails0000
El Paso Natural Gas288286286286
Transwestern97131131131
Withdrawal
PG&E Storage Withdrawal (1534 Maximum)*
Core, Market Center, and Pipeline Balancing
454472562441
Wild Goose Storage413297297297
Central Valley Storage92929292
Lodi Storage132848484
Gill Ranch Storage112444
TOTAL SYSTEM SUPPLY3002292628992778
INVENTORY CHANGE
(Supply - Demand)
-5874-11132
TOTAL CUSTOMER IMBALANCE-197-1082226

*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
1/18/2017
Forecast
for
1/19/2017
Forecast
for
1/20/2017
Forecast
for
1/21/2017
Injection
PG&E Storage
Core and Market Center
581383636
Wild Goose Storage359305305305
Central Valley Storage0000
Lodi Storage43434343
Gill Ranch Storage164160160160
Pipeline Balancing Injection007575
Withdrawal
PG&E Storage
Core and Market Center
484535673552
Wild Goose Storage773603603603
Central Valley Storage91929292
Lodi Storage175127127127
Gill Ranch Storage181164164164
Pipeline Balancing Withdrawal1237500

Return to top


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

Actual
for
1/15/2017
Actual
for
1/16/2017
Actual
for
1/17/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 48.1
43.943.846.1
Demand
On-System Demand294432463128
Off-System Deliveries
SoCal Gas (KRS)565450
Southwest Gas131414
Kern River GT - HDL0040
Transmission Shrinkage222121
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND303533353252
Supply
Interconnect Supply
Gas Transmission Northwest640642644
Ruby673671673
California Production282729
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett2800
Southern Trails000
El Paso Natural Gas330319302
Transwestern118118109
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
454644704
Wild Goose Storage451450461
Central Valley Storage107107107
Lodi Storage4194187
Gill Ranch Storage178178110
TOTAL SYSTEM SUPPLY304932513324
INVENTORY CHANGE
(Supply - Demand)
14-8472
TOTAL CUSTOMER IMBALANCE-79-267-88

*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
1/15/2017
Actual
for
1/16/2017
Actual
for
1/17/2017
Injection
PG&E Storage
Core and Market Center
595310
Wild Goose Storage274300330
Central Valley Storage000
Lodi Storage434343
Gill Ranch Storage9292160
Pipeline Balancing Injection000
Withdrawal
PG&E Storage
Core and Market Center
536623679
Wild Goose Storage728757778
Central Valley Storage107107106
Lodi Storage85134231
Gill Ranch Storage174174174
Pipeline Balancing Withdrawal73169131
Balancing Gas
Imbalance Gas in Storage**816561634
PG&E Total Gas in Storage740287347972720

*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.

Return to top