Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Tuesday, March 28, 2023 at 7:22 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
3/26/2023No OFO in Effect
3/27/2023System Wide OFO in Effect5% Stage 3 at $ 5.00 /Dth Low Inventory
3/28/2023No OFO in Effect
3/29/2023No 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 1, posted 08:53 AM PT

Last updated for the Gas Day of 03/28/2023
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf3/25/20233/26/20233/27/20233/28/20233/29/20233/30/20233/31/2023
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300 4318 4327
4250 4285 4268
4200 4242
41504186
4100 4129
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
3/28/2023		Forecast
for
3/29/2023		Forecast
for
3/30/2023		Forecast
for
3/31/2023
Beginning Inventory4318428542424268
Ending Inventory4285424242684327
Inventory Change-33-432659
 
Upper Limit4400440044004400
Difference*
(Upper Limit - Ending Inventory)		11515813273
 
Lower Limit4000400040004000
Difference*
(Ending Inventory - Lower Limit)		285242268327

*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 1, posted 08:53 AM PT

Last updated for the Gas Day of 03/28/2023
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
3/28/2023		Forecast
for
3/29/2023		Forecast
for
3/30/2023		Forecast
for
3/31/2023
COMPOSITE TEMPERATURE
Historical Average for current day: 55.6		49.848.751.552.4
Demand
On-System Demand2570260024302245
Off-System Deliveries
SoCal Gas (KRS)20252525
Southwest Gas10101010
Kern River GT - HDL0000
Transmission Shrinkage33343333
Injection
PG&E Storage Injection (344 Maximum)*
Core, Market Center, and Pipeline Balancing		376500
Wild Goose Storage0484848
Central Valley Storage0000
Lodi Storage000150
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2670278225452510
Supply
Interconnect Supply
Gas Transmission Northwest1278152516251278
Ruby431450450431
California Production25252525
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL4444
Kern River GT - Daggett0000
Southern Trails0000
El Paso Natural Gas412300200412
Transwestern352300200352
Withdrawal
PG&E Storage Withdrawal (618 Maximum)*
Core, Market Center, and Pipeline Balancing		1703940
Wild Goose Storage42-0-0-0
Central Valley Storage5767-0-0
Lodi Storage453-0-0
Gill Ranch Storage14142929
TOTAL SYSTEM SUPPLY2636273825712570
INVENTORY CHANGE
(Supply - Demand)		-33-432659
TOTAL CUSTOMER IMBALANCE-82-90-2312

*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
3/28/2023		Forecast
for
3/29/2023		Forecast
for
3/30/2023		Forecast
for
3/31/2023
Injection
PG&E Storage
Core and Market Center		319374191191
Wild Goose Storage287484848
Central Valley Storage0000
Lodi Storage109000
Gill Ranch Storage34343434
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center		299309245246
Wild Goose Storage329000
Central Valley Storage5767-0-0
Lodi Storage113530150
Gill Ranch Storage48484848
Pipeline Balancing Withdrawal0000

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

Actual
for
3/25/2023		Actual
for
3/26/2023		Actual
for
3/27/2023
COMPOSITE TEMPERATURE
Historical Average for current day: 55.6		49.547.253
Demand
On-System Demand212023072290
Off-System Deliveries
SoCal Gas (KRS)383830
Southwest Gas10610
Kern River GT - HDL000
Transmission Shrinkage323232
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing		157660
Wild Goose Storage18519051
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND254126392413
Supply
Interconnect Supply
Gas Transmission Northwest121512341163
Ruby346363398
California Production262827
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL698678
Kern River GT - Daggett6170
Southern Trails000
El Paso Natural Gas446448447
Transwestern328330326
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing		001
Wild Goose Storage-0-0-0
Central Valley Storage-0-0-0
Lodi Storage6862149
Gill Ranch Storage141414
TOTAL SYSTEM SUPPLY251725822602
INVENTORY CHANGE
(Supply - Demand)		-24-57189
TOTAL CUSTOMER IMBALANCE-51-213170

*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
3/25/2023		Actual
for
3/26/2023		Actual
for
3/27/2023
Injection
PG&E Storage
Core and Market Center		393392316
Wild Goose Storage456472488
Central Valley Storage000
Lodi Storage343434
Gill Ranch Storage343433
Pipeline Balancing Injection1600
Withdrawal
PG&E Storage
Core and Market Center		252251296
Wild Goose Storage265272459
Central Valley Storage-0-0-0
Lodi Storage9898185
Gill Ranch Storage484848
Pipeline Balancing Withdrawal07521
Balancing Gas
Imbalance Gas in Storage**-1051-1242-1128
PG&E Total Gas in Storage167118281894

*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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