Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Thursday, January 21, 2021 at 7:22 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
1/19/2021No OFO in Effect
1/20/2021System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
1/21/2021No OFO in Effect
1/22/2021No 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 3, posted 04:03 PM PT

Last updated for the Gas Day of 01/21/2021
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
MMcf1/18/20211/19/20211/20/20211/21/20211/22/20211/23/20211/24/2021
4750
4700
4650
4600
4550
4500
44504457
4400
4350
4300 4345
4250 4273
4200 42364231 4239
4150
4100
4050 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
1/21/2021
Forecast
for
1/22/2021
Forecast
for
1/23/2021
Forecast
for
1/24/2021
Beginning Inventory4231434542734239
Ending Inventory4345427342394050
Inventory Change114-72-34-189
 
Upper Limit4400450044004500
Difference*
(Upper Limit - Ending Inventory)
55227161450
 
Lower Limit4000410040004100
Difference*
(Ending Inventory - Lower Limit)
345173239-50

*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 3, posted 04:03 PM PT

Last updated for the Gas Day of 01/21/2021
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
1/21/2021
Forecast
for
1/22/2021
Forecast
for
1/23/2021
Forecast
for
1/24/2021
COMPOSITE TEMPERATURE
Historical Average for current day: 48.3
51.348.346.646.6
Demand
On-System Demand2385252024352590
Off-System Deliveries
SoCal Gas (KRS)185218218218
Southwest Gas4444
Kern River GT - HDL72545454
Transmission Shrinkage33323232
Injection
PG&E Storage Injection (108 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage6000
Gill Ranch Storage4444
TOTAL SYSTEM DEMAND2690283227472902
Supply
Interconnect Supply
Gas Transmission Northwest1362131313131313
Ruby557568568568
California Production26262626
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett3000
Southern Trails0000
El Paso Natural Gas376350350350
Transwestern215234234234
Withdrawal
PG&E Storage Withdrawal (1000 Maximum)*
Core, Market Center, and Pipeline Balancing
147106169169
Wild Goose Storage93222
Central Valley Storage24-0-0-0
Lodi Storage-01605050
Gill Ranch Storage-0-0-0-0
TOTAL SYSTEM SUPPLY2803276027132713
INVENTORY CHANGE
(Supply - Demand)
114-72-34-189
TOTAL CUSTOMER IMBALANCE-5-134-96-251

*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.

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PG&E Storage Activity Forecast
(Scheduled Volumes)

Forecast
for
1/21/2021
Forecast
for
1/22/2021
Forecast
for
1/23/2021
Forecast
for
1/24/2021
Injection
PG&E Storage
Core and Market Center
797144
Wild Goose Storage642712712712
Central Valley Storage0000
Lodi Storage169400
Gill Ranch Storage24242424
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
174177172172
Wild Goose Storage735714714714
Central Valley Storage24-0-0-0
Lodi Storage1631645050
Gill Ranch Storage20202020
Pipeline Balancing Withdrawal52000

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

Actual
for
1/18/2021
Actual
for
1/19/2021
Actual
for
1/20/2021
COMPOSITE TEMPERATURE
Historical Average for current day: 48.3
64.155.250.4
Demand
On-System Demand181321512418
Off-System Deliveries
SoCal Gas (KRS)258251278
Southwest Gas455
Kern River GT - HDL426884
Transmission Shrinkage323231
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
1121093
Wild Goose Storage6530107
Central Valley Storage000
Lodi Storage130890
Gill Ranch Storage81290
TOTAL SYSTEM DEMAND253827632926
Supply
Interconnect Supply
Gas Transmission Northwest141714411369
Ruby472480520
California Production262728
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett1000
Southern Trails000
El Paso Natural Gas372377370
Transwestern219217239
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
00348
Wild Goose Storage-0-0-0
Central Valley Storage-0-0-0
Lodi Storage-0-047
Gill Ranch Storage-0-0-0
TOTAL SYSTEM SUPPLY251625422921
INVENTORY CHANGE
(Supply - Demand)
-22-221-5
TOTAL CUSTOMER IMBALANCE218-80-272

*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
1/18/2021
Actual
for
1/19/2021
Actual
for
1/20/2021
Injection
PG&E Storage
Core and Market Center
12212581
Wild Goose Storage610582667
Central Valley Storage000
Lodi Storage247247106
Gill Ranch Storage323232
Pipeline Balancing Injection2412060
Withdrawal
PG&E Storage
Core and Market Center
202173207
Wild Goose Storage545569558
Central Valley Storage-0-0-0
Lodi Storage126150159
Gill Ranch Storage252624
Pipeline Balancing Withdrawal00219
Balancing Gas
Imbalance Gas in Storage**180618481553
PG&E Total Gas in Storage74139743000

*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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