Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Monday, May 10, 2021 at 7:32 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
5/8/2021System Wide OFO in Effect5% Stage 2 at $ 1.00 /Dth High Inventory
5/9/2021No OFO in Effect
5/10/2021No OFO in Effect
5/11/2021No 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 05/10/2021
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
MMcf5/7/20215/8/20215/9/20215/10/20215/11/20215/12/20215/13/2021
4750
4700
4650
4600
4550
4500
4450
4400
4350
43004342
4250 42834287 4265
4200 4212 4216
4150 4182
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
5/10/2021
Forecast
for
5/11/2021
Forecast
for
5/12/2021
Forecast
for
5/13/2021
Beginning Inventory4287421241824216
Ending Inventory4212418242164265
Inventory Change-75-303449
 
Upper Limit4400440044004400
Difference*
(Upper Limit - Ending Inventory)
188218184135
 
Lower Limit4000400040004000
Difference*
(Ending Inventory - Lower Limit)
212182216265

*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 05/10/2021
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
5/10/2021
Forecast
for
5/11/2021
Forecast
for
5/12/2021
Forecast
for
5/13/2021
COMPOSITE TEMPERATURE
Historical Average for current day: 61.5
70.270.168.966.5
Demand
On-System Demand1490170016601645
Off-System Deliveries
SoCal Gas (KRS)148194194194
Southwest Gas5555
Kern River GT - HDL26292929
Transmission Shrinkage32333333
Injection
PG&E Storage Injection (410 Maximum)*
Core, Market Center, and Pipeline Balancing
10011800
Wild Goose Storage410328430430
Central Valley Storage47474747
Lodi Storage456257257257
Gill Ranch Storage45292222
TOTAL SYSTEM DEMAND2760274026772662
Supply
Interconnect Supply
Gas Transmission Northwest1384139613961396
Ruby649669669669
California Production27272727
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett3333
Southern Trails0000
El Paso Natural Gas326328328328
Transwestern296289289289
Withdrawal
PG&E Storage Withdrawal (732 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 SUPPLY2685271127112711
INVENTORY CHANGE
(Supply - Demand)
-75-303449
TOTAL CUSTOMER IMBALANCE-155-75-114

*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
5/10/2021
Forecast
for
5/11/2021
Forecast
for
5/12/2021
Forecast
for
5/13/2021
Injection
PG&E Storage
Core and Market Center
284230143143
Wild Goose Storage589431430430
Central Valley Storage78787878
Lodi Storage469270270270
Gill Ranch Storage76616161
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
151112150150
Wild Goose Storage18010300
Central Valley Storage31313131
Lodi Storage13131313
Gill Ranch Storage31313131
Pipeline Balancing Withdrawal34000

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

Actual
for
5/7/2021
Actual
for
5/8/2021
Actual
for
5/9/2021
COMPOSITE TEMPERATURE
Historical Average for current day: 61.5
63.470.368.6
Demand
On-System Demand142812761235
Off-System Deliveries
SoCal Gas (KRS)192186131
Southwest Gas465
Kern River GT - HDL3200
Transmission Shrinkage333131
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
329186194
Wild Goose Storage385400405
Central Valley Storage849787
Lodi Storage182454454
Gill Ranch Storage595859
TOTAL SYSTEM DEMAND272926962603
Supply
Interconnect Supply
Gas Transmission Northwest143213551343
Ruby648618609
California Production282727
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett0010
Southern Trails000
El Paso Natural Gas348329325
Transwestern303308294
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage-0-0-0
Central Valley Storage-0-0-0
Lodi Storage-0-0-0
Gill Ranch Storage-0-0-0
TOTAL SYSTEM SUPPLY275826372607
INVENTORY CHANGE
(Supply - Demand)
29-594
TOTAL CUSTOMER IMBALANCE275-749

*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
5/7/2021
Actual
for
5/8/2021
Actual
for
5/9/2021
Injection
PG&E Storage
Core and Market Center
264261260
Wild Goose Storage559582591
Central Valley Storage116127118
Lodi Storage189468468
Gill Ranch Storage909090
Pipeline Balancing Injection2157684
Withdrawal
PG&E Storage
Core and Market Center
150151151
Wild Goose Storage174180180
Central Valley Storage313131
Lodi Storage131313
Gill Ranch Storage313131
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**119611701221
PG&E Total Gas in Storage669666729567481

*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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