Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, June 7, 2023 at 7:22 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
6/5/2023No OFO in Effect
6/6/2023System Wide OFO in Effect11% Stage 1 at $ .25 /Dth Low Inventory
6/7/2023No OFO in Effect
6/8/2023No 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 2, posted 12:43 PM PT

Last updated for the Gas Day of 06/07/2023
Next update expected by 4:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf6/4/20236/5/20236/6/20236/7/20236/8/20236/9/20236/10/2023
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250 4258
4200 420042164232
4150 41994164
41004133
4050
4000
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
6/7/2023		Forecast
for
6/8/2023		Forecast
for
6/9/2023		Forecast
for
6/10/2023
Beginning Inventory4164420042164232
Ending Inventory4200421642324258
Inventory Change36161626
 
Upper Limit4400440044004400
Difference*
(Upper Limit - Ending Inventory)		200184168142
 
Lower Limit4000400040004000
Difference*
(Ending Inventory - Lower Limit)		200216232258

*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 2, posted 12:43 PM PT

Last updated for the Gas Day of 06/07/2023
Next update expected by 4:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
6/7/2023		Forecast
for
6/8/2023		Forecast
for
6/9/2023		Forecast
for
6/10/2023
COMPOSITE TEMPERATURE
Historical Average for current day: 66.1		64.565.263.764.1
Demand
On-System Demand1630162015351375
Off-System Deliveries
SoCal Gas (KRS)156159159159
Southwest Gas3333
Kern River GT - HDL0000
Transmission Shrinkage37353636
Injection
PG&E Storage Injection (300 Maximum)*
Core, Market Center, and Pipeline Balancing		1951158686
Wild Goose Storage469508508508
Central Valley Storage45454545
Lodi Storage9999225375
Gill Ranch Storage15360154154
TOTAL SYSTEM DEMAND2787264427512741
Supply
Interconnect Supply
Gas Transmission Northwest1728161917251725
Ruby456350350350
California Production24242424
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett48424242
Southern Trails0000
El Paso Natural Gas399443443443
Transwestern167183183183
Withdrawal
PG&E Storage Withdrawal (613 Maximum)*
Core, Market Center, and Pipeline Balancing		0000
Wild Goose Storage-0-0-0-0
Central Valley Storage-0-0-0-0
Lodi Storage-0-0-0-0
Gill Ranch Storage-0-0-0-0
TOTAL SYSTEM SUPPLY2823266127672767
INVENTORY CHANGE
(Supply - Demand)		36161626
TOTAL CUSTOMER IMBALANCE5-6-73

*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
6/7/2023		Forecast
for
6/8/2023		Forecast
for
6/9/2023		Forecast
for
6/10/2023
Injection
PG&E Storage
Core and Market Center		173886060
Wild Goose Storage563564564564
Central Valley Storage45454545
Lodi Storage141141225375
Gill Ranch Storage18794187187
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center		7777
Wild Goose Storage94565656
Central Valley Storage-0-0-0-0
Lodi Storage424200
Gill Ranch Storage-0-0-0-0
Pipeline Balancing Withdrawal5000

Return to top

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

Actual
for
6/4/2023		Actual
for
6/5/2023		Actual
for
6/6/2023
COMPOSITE TEMPERATURE
Historical Average for current day: 66.1		69.165.663
Demand
On-System Demand136016701642
Off-System Deliveries
SoCal Gas (KRS)89119100
Southwest Gas533
Kern River GT - HDL000
Transmission Shrinkage323436
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing		1180197
Wild Goose Storage472481485
Central Valley Storage69180
Lodi Storage227233100
Gill Ranch Storage126128152
TOTAL SYSTEM DEMAND249926872715
Supply
Interconnect Supply
Gas Transmission Northwest152216491789
Ruby345357191
California Production232424
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett474468
Southern Trails000
El Paso Natural Gas356360401
Transwestern182184180
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing		01356
Wild Goose Storage-0-0-0
Central Valley Storage-0-020
Lodi Storage-0-0-0
Gill Ranch Storage-0-0-0
TOTAL SYSTEM SUPPLY247427532680
INVENTORY CHANGE
(Supply - Demand)		-2666-35
TOTAL CUSTOMER IMBALANCE-121-18764

*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
6/4/2023		Actual
for
6/5/2023		Actual
for
6/6/2023
Injection
PG&E Storage
Core and Market Center		179178177
Wild Goose Storage526531560
Central Valley Storage696945
Lodi Storage272272141
Gill Ranch Storage162163182
Pipeline Balancing Injection000
Withdrawal
PG&E Storage
Core and Market Center		7557
Wild Goose Storage564873
Central Valley Storage-05757
Lodi Storage424242
Gill Ranch Storage-0-0-0
Pipeline Balancing Withdrawal9029314
Balancing Gas
Imbalance Gas in Storage**494947374800
PG&E Total Gas in Storage15740015653

*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 5.0 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