Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Sunday, October 21, 2018 at 7:16 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
10/19/2018No OFO in Effect
10/20/2018No OFO in Effect
10/21/2018No OFO in Effect
10/22/2018No 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 01:00 PM PT

Last updated for the Gas Day of 10/21/2018
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
MMcf10/18/201810/19/201810/20/201810/21/201810/22/201810/23/201810/24/2018
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100
4050
4000 4011
3950 39863962
39003945
3850
3800 3817
3750 37703778
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
10/21/2018
Forecast
for
10/22/2018
Forecast
for
10/23/2018
Forecast
for
10/24/2018
Beginning Inventory3986396238173770
Ending Inventory3962381737703778
Inventory Change-24-145-478
 
Upper Limit4150415041504150
Difference*
(Upper Limit - Ending Inventory)
188333380372
 
Lower Limit3750375037503750
Difference*
(Ending Inventory - Lower Limit)
212672028

*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 01:00 PM PT

Last updated for the Gas Day of 10/21/2018
Next update expected by 4:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
10/21/2018
Forecast
for
10/22/2018
Forecast
for
10/23/2018
Forecast
for
10/24/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 62.4
60.9606061.7
Demand
On-System Demand1930215521602130
Off-System Deliveries
SoCal Gas (KRS)259283283283
Southwest Gas6666
Kern River GT - HDL0000
Transmission Shrinkage29292929
Injection
PG&E Storage Injection (379 Maximum)*
Core, Market Center, and Pipeline Balancing
1000
Wild Goose Storage226226226226
Central Valley Storage1111
Lodi Storage1100
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2453270027042674
Supply
Interconnect Supply
Gas Transmission Northwest1164118011801180
Ruby875874874874
California Production29292929
SoCal Gas (KRS)0000
Kern River GT - HDL4444
Kern River GT - Daggett0000
Southern Trails0000
El Paso Natural Gas129131131131
Transwestern218219219219
Withdrawal
PG&E Storage Withdrawal (786 Maximum)*
Core, Market Center, and Pipeline Balancing
0107134134
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0075100
Gill Ranch Storage10101010
TOTAL SYSTEM SUPPLY2429255526572682
INVENTORY CHANGE
(Supply - Demand)
-24-145-478
TOTAL CUSTOMER IMBALANCE9-218-117-61

*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
10/21/2018
Forecast
for
10/22/2018
Forecast
for
10/23/2018
Forecast
for
10/24/2018
Injection
PG&E Storage
Core and Market Center
127124104104
Wild Goose Storage506505505505
Central Valley Storage66666666
Lodi Storage828200
Gill Ranch Storage0000
Pipeline Balancing Injection29000
Withdrawal
PG&E Storage
Core and Market Center
156156163163
Wild Goose Storage279279279279
Central Valley Storage65656565
Lodi Storage818175100
Gill Ranch Storage10101010
Pipeline Balancing Withdrawal0757575

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

Actual
for
10/18/2018
Actual
for
10/19/2018
Actual
for
10/20/2018
COMPOSITE TEMPERATURE
Historical Average for current day: 62.4
6163.562.3
Demand
On-System Demand224720971971
Off-System Deliveries
SoCal Gas (KRS)364367281
Southwest Gas766
Kern River GT - HDL1400
Transmission Shrinkage272929
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
0020
Wild Goose Storage100276235
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND275927752542
Supply
Interconnect Supply
Gas Transmission Northwest120212481181
Ruby670811872
California Production293029
SoCal Gas (KRS)000
Kern River GT - HDL0029
Kern River GT - Daggett000
Southern Trails000
El Paso Natural Gas112137134
Transwestern257207218
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
3922670
Wild Goose Storage000
Central Valley Storage0390
Lodi Storage8710144
Gill Ranch Storage43011
TOTAL SYSTEM SUPPLY279328412517
INVENTORY CHANGE
(Supply - Demand)
3466-25
TOTAL CUSTOMER IMBALANCE1513848

*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
10/18/2018
Actual
for
10/19/2018
Actual
for
10/20/2018
Injection
PG&E Storage
Core and Market Center
9393128
Wild Goose Storage552700506
Central Valley Storage666566
Lodi Storage828182
Gill Ranch Storage5000
Pipeline Balancing Injection04148
Withdrawal
PG&E Storage
Core and Market Center
474401156
Wild Goose Storage454420280
Central Valley Storage5611465
Lodi Storage177177129
Gill Ranch Storage50110
Pipeline Balancing Withdrawal5500
Balancing Gas
Imbalance Gas in Storage**237824672537
PG&E Total Gas in Storage744767404073773

*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 4.040 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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