Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Monday, April 6, 2020 at 7:50 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
4/4/2020System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
4/5/2020No OFO in Effect
4/6/2020System Wide OFO in Effect7% Stage 1 at $ .25 /Dth Low Inventory
4/7/2020System Wide OFO in Effect6% Stage 1 at $ .25 /Dth Low Inventory

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 4, posted 09:26 PM PT

Last updated for the Gas Day of 04/06/2020
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf4/3/20204/4/20204/5/20204/6/20204/7/20204/8/20204/9/2020
4750
4700
4650
4600
4550
4500
4450 4491
4400
4350
4300 4325
4250 4299
420042444236 4235
4150
4100 4135
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
4/6/2020
Forecast
for
4/7/2020
Forecast
for
4/8/2020
Forecast
for
4/9/2020
Beginning Inventory4135429942354325
Ending Inventory4299423543254491
Inventory Change164-6490166
 
Upper Limit4500450044004400
Difference*
(Upper Limit - Ending Inventory)
20126575-91
 
Lower Limit4100410040004000
Difference*
(Ending Inventory - Lower Limit)
199135325491

*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 4, posted 09:26 PM PT

Last updated for the Gas Day of 04/06/2020
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
4/6/2020
Forecast
for
4/7/2020
Forecast
for
4/8/2020
Forecast
for
4/9/2020
COMPOSITE TEMPERATURE
Historical Average for current day: 56.6
48.853.956.659.3
Demand
On-System Demand2445232521652090
Off-System Deliveries
SoCal Gas (KRS)40247247247
Southwest Gas6666
Kern River GT - HDL0000
Transmission Shrinkage30333333
Injection
PG&E Storage Injection (263 Maximum)*
Core, Market Center, and Pipeline Balancing
0131818
Wild Goose Storage193135135135
Central Valley Storage0292929
Lodi Storage124686868
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2838285527002625
Supply
Interconnect Supply
Gas Transmission Northwest876116711671167
Ruby937905905905
California Production30303030
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett1222
Southern Trails0000
El Paso Natural Gas385379379379
Transwestern284227227227
Withdrawal
PG&E Storage Withdrawal (1027 Maximum)*
Core, Market Center, and Pipeline Balancing
296000
Wild Goose Storage-0-0-0-0
Central Valley Storage62-0-0-0
Lodi Storage-0-0-0-0
Gill Ranch Storage131808080
TOTAL SYSTEM SUPPLY3002279027902790
INVENTORY CHANGE
(Supply - Demand)
164-6490166
TOTAL CUSTOMER IMBALANCE-197-10451126

*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
4/6/2020
Forecast
for
4/7/2020
Forecast
for
4/8/2020
Forecast
for
4/9/2020
Injection
PG&E Storage
Core and Market Center
63534444
Wild Goose Storage408293293293
Central Valley Storage24292929
Lodi Storage263114114114
Gill Ranch Storage30474747
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
153132117117
Wild Goose Storage215158158158
Central Valley Storage85-0-0-0
Lodi Storage138464646
Gill Ranch Storage66353535
Pipeline Balancing Withdrawal300000

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

Actual
for
4/3/2020
Actual
for
4/4/2020
Actual
for
4/5/2020
COMPOSITE TEMPERATURE
Historical Average for current day: 56.6
53.953.949.8
Demand
On-System Demand188121112243
Off-System Deliveries
SoCal Gas (KRS)1013877
Southwest Gas1167
Kern River GT - HDL000
Transmission Shrinkage303030
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
9000
Wild Goose Storage330339350
Central Valley Storage765320
Lodi Storage43234228
Gill Ranch Storage000
TOTAL SYSTEM DEMAND256128122956
Supply
Interconnect Supply
Gas Transmission Northwest904864872
Ruby910945945
California Production313130
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett000
Southern Trails000
El Paso Natural Gas364361362
Transwestern273287284
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
0248262
Wild Goose Storage-0-0-0
Central Valley Storage-0-0-0
Lodi Storage-0-0-0
Gill Ranch Storage9568100
TOTAL SYSTEM SUPPLY257728042855
INVENTORY CHANGE
(Supply - Demand)
16-8-101
TOTAL CUSTOMER IMBALANCE59-341-408

*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
4/3/2020
Actual
for
4/4/2020
Actual
for
4/5/2020
Injection
PG&E Storage
Core and Market Center
636262
Wild Goose Storage480457459
Central Valley Storage775324
Lodi Storage87279276
Gill Ranch Storage606331
Pipeline Balancing Injection4700
Withdrawal
PG&E Storage
Core and Market Center
117117117
Wild Goose Storage155110110
Central Valley Storage-0-0-0
Lodi Storage464646
Gill Ranch Storage593535
Pipeline Balancing Withdrawal0290303
Balancing Gas
Imbalance Gas in Storage**907614308
PG&E Total Gas in Storage622096220161859

*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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