Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Saturday, January 28, 2023 at 7:22 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
1/26/2023No OFO in Effect
1/27/2023No OFO in Effect
1/28/2023No OFO in Effect
1/29/2023No 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.

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System Inventory Status

Plan 2, posted 12:23 PM PT

Last updated for the Gas Day of 01/28/2023
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
MMcf1/25/20231/26/20231/27/20231/28/20231/29/20231/30/20231/31/2023
4750
4700
4650
4600
4550
4500
4450 4491
4400 4422
4350 4368
4300 4311
42504265
4200 42034221
4150
4100
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.

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System Inventory Summary

Forecast
for
1/28/2023
Forecast
for
1/29/2023
Forecast
for
1/30/2023
Forecast
for
1/31/2023
Beginning Inventory4221436844914422
Ending Inventory4368449144224311
Inventory Change147123-69-111
 
Upper Limit4500450045004500
Difference*
(Upper Limit - Ending Inventory)
132978189
 
Lower Limit4100410041004100
Difference*
(Ending Inventory - Lower Limit)
268391322211

*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 2, posted 12:23 PM PT

Last updated for the Gas Day of 01/28/2023
Next update expected by 4:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
1/28/2023
Forecast
for
1/29/2023
Forecast
for
1/30/2023
Forecast
for
1/31/2023
COMPOSITE TEMPERATURE
Historical Average for current day: 49.1
49.644.843.843.1
Demand
On-System Demand2370279531853220
Off-System Deliveries
SoCal Gas (KRS)111111111111
Southwest Gas5555
Kern River GT - HDL32535353
Transmission Shrinkage29292929
Injection
PG&E Storage Injection (217 Maximum)*
Core, Market Center, and Pipeline Balancing
174000
Wild Goose Storage0000
Central Valley Storage969600
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2817308933843419
Supply
Interconnect Supply
Gas Transmission Northwest1372138013801380
Ruby280290290290
California Production27272727
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett1111
Southern Trails0000
El Paso Natural Gas311311311311
Transwestern201197197197
Withdrawal
PG&E Storage Withdrawal (776 Maximum)*
Core, Market Center, and Pipeline Balancing
10221149113
Wild Goose Storage564564564564
Central Valley Storage-0-0174174
Lodi Storage172172172225
Gill Ranch Storage26515127
TOTAL SYSTEM SUPPLY2963321333153308
INVENTORY CHANGE
(Supply - Demand)
147123-69-111
TOTAL CUSTOMER IMBALANCE26996-96-137

*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
1/28/2023
Forecast
for
1/29/2023
Forecast
for
1/30/2023
Forecast
for
1/31/2023
Injection
PG&E Storage
Core and Market Center
76595959
Wild Goose Storage428428428428
Central Valley Storage10310388
Lodi Storage8880
Gill Ranch Storage1000
Pipeline Balancing Injection150000
Withdrawal
PG&E Storage
Core and Market Center
62303232172
Wild Goose Storage992992992992
Central Valley Storage77182182
Lodi Storage180180180225
Gill Ranch Storage27272727
Pipeline Balancing Withdrawal0000

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

Actual
for
1/25/2023
Actual
for
1/26/2023
Actual
for
1/27/2023
COMPOSITE TEMPERATURE
Historical Average for current day: 49.1
53.550.848.9
Demand
On-System Demand275926052567
Off-System Deliveries
SoCal Gas (KRS)17016492
Southwest Gas555
Kern River GT - HDL583346
Transmission Shrinkage272629
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
21022
Wild Goose Storage000
Central Valley Storage0060
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND304028332820
Supply
Interconnect Supply
Gas Transmission Northwest135513171368
Ruby386357406
California Production272727
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett12210
Southern Trails000
El Paso Natural Gas201159286
Transwestern165151180
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
864024
Wild Goose Storage600450360
Central Valley Storage5035-0
Lodi Storage183179159
Gill Ranch Storage413628
TOTAL SYSTEM SUPPLY310627712838
INVENTORY CHANGE
(Supply - Demand)
66-6218
TOTAL CUSTOMER IMBALANCE128-7011

*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
1/25/2023
Actual
for
1/26/2023
Actual
for
1/27/2023
Injection
PG&E Storage
Core and Market Center
80110130
Wild Goose Storage369566624
Central Valley Storage8879
Lodi Storage628
Gill Ranch Storage000
Pipeline Balancing Injection66014
Withdrawal
PG&E Storage
Core and Market Center
212129147
Wild Goose Storage9631022985
Central Valley Storage564619
Lodi Storage194182165
Gill Ranch Storage423628
Pipeline Balancing Withdrawal0210
Balancing Gas
Imbalance Gas in Storage**-1168-1151-1120
PG&E Total Gas in Storage455744924452

*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.

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