Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, April 24, 2019 at 12:21 PM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
4/22/2019No OFO in Effect
4/23/2019System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
4/24/2019No OFO in Effect
4/25/2019System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High 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 09:36 PM PT

Last updated for the Gas Day of 04/24/2019
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
MMcf4/21/20194/22/20194/23/20194/24/20194/25/20194/26/20194/27/2019
4750
4700
4650
4600
4550
4500
4450
4400
4350
430043114317 4333
4250 4253
4200 4247
4150 4154
4100 4146
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
4/24/2019
Forecast
for
4/25/2019
Forecast
for
4/26/2019
Forecast
for
4/27/2019
Beginning Inventory4247433341544146
Ending Inventory4333415441464253
Inventory Change86-179-8107
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
-3314615447
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
433254246353

*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 09:36 PM PT

Last updated for the Gas Day of 04/24/2019
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
4/24/2019
Forecast
for
4/25/2019
Forecast
for
4/26/2019
Forecast
for
4/27/2019
COMPOSITE TEMPERATURE
Historical Average for current day: 59.1
71.967.367.767.7
Demand
On-System Demand1460143513751260
Off-System Deliveries
SoCal Gas (KRS)42333333
Southwest Gas6666
Kern River GT - HDL10161616
Transmission Shrinkage30282828
Injection
PG&E Storage Injection (320 Maximum)*
Core, Market Center, and Pipeline Balancing
278262208208
Wild Goose Storage444470470470
Central Valley Storage0898989
Lodi Storage301259259259
Gill Ranch Storage1021186262
TOTAL SYSTEM DEMAND2673271625462431
Supply
Interconnect Supply
Gas Transmission Northwest1330110711071107
Ruby716743743743
California Production25252525
SoCal Gas (KRS)-0-0-0-0
Kern River GT - HDL-0-0-0-0
Kern River GT - Daggett3333
Southern Trails0000
El Paso Natural Gas394363363363
Transwestern284296296296
Withdrawal
PG&E Storage Withdrawal (574 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage-0-0-0-0
Central Valley Storage7-0-0-0
Lodi Storage-0-0-0-0
Gill Ranch Storage-0-0-0-0
TOTAL SYSTEM SUPPLY2759253825382538
INVENTORY CHANGE
(Supply - Demand)
86-179-8107
TOTAL CUSTOMER IMBALANCE161-11057172

*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
4/24/2019
Forecast
for
4/25/2019
Forecast
for
4/26/2019
Forecast
for
4/27/2019
Injection
PG&E Storage
Core and Market Center
420431321321
Wild Goose Storage496518518518
Central Valley Storage58106106106
Lodi Storage310267267267
Gill Ranch Storage138129129129
Pipeline Balancing Injection84757575
Withdrawal
PG&E Storage
Core and Market Center
188188188188
Wild Goose Storage52484848
Central Valley Storage65171717
Lodi Storage9999
Gill Ranch Storage74686868
Pipeline Balancing Withdrawal0000

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

Actual
for
4/21/2019
Actual
for
4/22/2019
Actual
for
4/23/2019
COMPOSITE TEMPERATURE
Historical Average for current day: 59.1
60.467.472.5
Demand
On-System Demand134014651462
Off-System Deliveries
SoCal Gas (KRS)385554
Southwest Gas666
Kern River GT - HDL000
Transmission Shrinkage313131
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
224278269
Wild Goose Storage470483530
Central Valley Storage1458190
Lodi Storage291288297
Gill Ranch Storage113113120
TOTAL SYSTEM DEMAND265828002859
Supply
Interconnect Supply
Gas Transmission Northwest128212961421
Ruby799811666
California Production252425
SoCal Gas (KRS)-0-0-0
Kern River GT - HDL-0-0-0
Kern River GT - Daggett744
Southern Trails000
El Paso Natural Gas391404414
Transwestern266267258
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 SUPPLY276928062789
INVENTORY CHANGE
(Supply - Demand)
1116-70
TOTAL CUSTOMER IMBALANCE2209712

*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
4/21/2019
Actual
for
4/22/2019
Actual
for
4/23/2019
Injection
PG&E Storage
Core and Market Center
314377429
Wild Goose Storage489496568
Central Valley Storage161112106
Lodi Storage301296305
Gill Ranch Storage176176139
Pipeline Balancing Injection988862
Withdrawal
PG&E Storage
Core and Market Center
187187187
Wild Goose Storage242537
Central Valley Storage173117
Lodi Storage999
Gill Ranch Storage646471
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**329134253450
PG&E Total Gas in Storage414994172342001

*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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