Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Tuesday, December 11, 2018 at 7:26 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
12/9/2018No OFO in Effect
12/10/2018System Wide OFO in Effect9% Stage 2 at $ 1.00 /Dth Low Inventory
12/11/2018System Wide OFO in Effect5% Stage 2 at $ 1.00 /Dth Low Inventory
12/12/2018No 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 04:46 PM PT

Last updated for the Gas Day of 12/11/2018
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
MMcf12/8/201812/9/201812/10/201812/11/201812/12/201812/13/201812/14/2018
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100
4050 4061
4000 4011 4017
3950 3982
39003947
3850 38803897
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
12/11/2018
Forecast
for
12/12/2018
Forecast
for
12/13/2018
Forecast
for
12/14/2018
Beginning Inventory3897406140113982
Ending Inventory4061401139824017
Inventory Change164-50-2935
 
Upper Limit4200420042004200
Difference*
(Upper Limit - Ending Inventory)
139189218183
 
Lower Limit3850385038503850
Difference*
(Ending Inventory - Lower Limit)
211161132167

*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 04:46 PM PT

Last updated for the Gas Day of 12/11/2018
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
12/11/2018
Forecast
for
12/12/2018
Forecast
for
12/13/2018
Forecast
for
12/14/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 49.7
49.148.948.852.2
Demand
On-System Demand3105308030702815
Off-System Deliveries
SoCal Gas (KRS)103949494
Southwest Gas15151515
Kern River GT - HDL0777
Transmission Shrinkage26262626
Injection
PG&E Storage Injection (144 Maximum)*
Core, Market Center, and Pipeline Balancing
0003
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage3000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND3252322332132961
Supply
Interconnect Supply
Gas Transmission Northwest986100910091009
Ruby892923923923
California Production30303030
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL8-0-0-0
Kern River GT - Daggett0000
Southern Trails0000
El Paso Natural Gas138959595
Transwestern319345345345
Withdrawal
PG&E Storage Withdrawal (1010 Maximum)*
Core, Market Center, and Pipeline Balancing
24317118150
Wild Goose Storage645387387387
Central Valley Storage49232525
Lodi Storage-0929292
Gill Ranch Storage107989841
TOTAL SYSTEM SUPPLY3416317331842995
INVENTORY CHANGE
(Supply - Demand)
164-50-2935
TOTAL CUSTOMER IMBALANCE187-51881

*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
12/11/2018
Forecast
for
12/12/2018
Forecast
for
12/13/2018
Forecast
for
12/14/2018
Injection
PG&E Storage
Core and Market Center
198181171171
Wild Goose Storage157191191191
Central Valley Storage39393939
Lodi Storage106000
Gill Ranch Storage0000
Pipeline Balancing Injection50757575
Withdrawal
PG&E Storage
Core and Market Center
491427427235
Wild Goose Storage802578578578
Central Valley Storage88636464
Lodi Storage103929292
Gill Ranch Storage107989898
Pipeline Balancing Withdrawal0000

Return to top


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

Actual
for
12/8/2018
Actual
for
12/9/2018
Actual
for
12/10/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 49.7
49.448.548.8
Demand
On-System Demand284530573273
Off-System Deliveries
SoCal Gas (KRS)125104134
Southwest Gas81613
Kern River GT - HDL818258
Transmission Shrinkage212122
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND308032803499
Supply
Interconnect Supply
Gas Transmission Northwest806812826
Ruby718723700
California Production313131
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett000
Southern Trails000
El Paso Natural Gas155154151
Transwestern297283294
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
255349408
Wild Goose Storage614630705
Central Valley Storage373772
Lodi Storage111101204
Gill Ranch Storage9893125
TOTAL SYSTEM SUPPLY312332133516
INVENTORY CHANGE
(Supply - Demand)
43-6717
TOTAL CUSTOMER IMBALANCE-10-22958

*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
12/8/2018
Actual
for
12/9/2018
Actual
for
12/10/2018
Injection
PG&E Storage
Core and Market Center
187186188
Wild Goose Storage188188119
Central Valley Storage393939
Lodi Storage000
Gill Ranch Storage060
Pipeline Balancing Injection0010
Withdrawal
PG&E Storage
Core and Market Center
384404606
Wild Goose Storage814814824
Central Valley Storage7676109
Lodi Storage106106206
Gill Ranch Storage9797133
Pipeline Balancing Withdrawal581320
Balancing Gas
Imbalance Gas in Storage**142512961364
PG&E Total Gas in Storage623856213061781

*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