Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Tuesday, May 24, 2016 at 7:17 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
5/22/2016No OFO in Effect
5/23/2016No OFO in Effect
5/24/2016No OFO in Effect
5/25/2016No 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 5, posted 04:51 AM PT

Last updated for the Gas Day of 05/24/2016
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf5/21/20165/22/20165/23/20165/24/20165/25/20165/26/20165/27/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250 4264
4200
4150 4190
4100 4136
4050 406440854087
40004022
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
5/24/2016
Forecast
for
5/25/2016
Forecast
for
5/26/2016
Forecast
for
5/27/2016
Beginning Inventory4085408741364190
Ending Inventory4087413641904264
Inventory Change2495474
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
21316411036
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
187236290364

*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 8:30 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 5, posted 04:51 AM PT

Last updated for the Gas Day of 05/24/2016
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
5/24/2016
Forecast
for
5/25/2016
Forecast
for
5/26/2016
Forecast
for
5/27/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 64.5
61.762.865.768.8
Demand
On-System Demand1,5131,5101,4851,390
Off-System Deliveries
SoCal Gas (KRS)242248248248
Southwest Gas4444
Kern River GT - HDL0000
Transmission Shrinkage27272727
Injection
PG&E Storage Injection (365 Maximum)*
Core, Market Center, and Pipeline Balancing
244244221221
Wild Goose Storage196117117117
Central Valley Storage7121212
Lodi Storage0075150
Gill Ranch Storage05599
TOTAL SYSTEM DEMAND2,2322,2172,1972,177
Supply
Interconnect Supply
Gas Transmission Northwest1,3261,3081,3081,308
Ruby490470470470
California Production33333333
SoCal Gas (KRS)0000
Kern River GT - HDL0121212
Kern River GT - Daggett44484848
Southern Trails0000
El Paso Natural Gas153194194194
Transwestern162187187187
Withdrawal
PG&E Storage Withdrawal (1,690 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage261400
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2,2342,2662,2522,252
INVENTORY CHANGE
(Supply - Demand)
2495474
TOTAL CUSTOMER IMBALANCE68100105125

*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
5/24/2016
Forecast
for
5/25/2016
Forecast
for
5/26/2016
Forecast
for
5/27/2016
Injection
PG&E Storage
Core and Market Center
347346362362
Wild Goose Storage453424424424
Central Valley Storage62686868
Lodi Storage1096475150
Gill Ranch Storage19212121
Pipeline Balancing Injection78757575
Withdrawal
PG&E Storage
Core and Market Center
150131216216
Wild Goose Storage261307307307
Central Valley Storage56565656
Lodi Storage1367800
Gill Ranch Storage50121212
Pipeline Balancing Withdrawal0000

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

Actual
for
5/21/2016
Actual
for
5/22/2016
Actual
for
5/23/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 64.5
5859.762.1
Demand
On-System Demand1,3841,3731,459
Off-System Deliveries
SoCal Gas (KRS)185176230
Southwest Gas444
Kern River GT - HDL000
Transmission Shrinkage262727
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
7878109
Wild Goose Storage250250230
Central Valley Storage108111106
Lodi Storage16315192
Gill Ranch Storage676734
TOTAL SYSTEM DEMAND2,2662,2372,290
Supply
Interconnect Supply
Gas Transmission Northwest1,0551,1771,209
Ruby540540537
California Production343433
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett362117
Southern Trails000
El Paso Natural Gas311301311
Transwestern224206205
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY2,2002,2792,311
INVENTORY CHANGE
(Supply - Demand)
-664221
TOTAL CUSTOMER IMBALANCE-137-68-100

*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
5/21/2016
Actual
for
5/22/2016
Actual
for
5/23/2016
Injection
PG&E Storage
Core and Market Center
304305333
Wild Goose Storage523525527
Central Valley Storage165165161
Lodi Storage201210158
Gill Ranch Storage656543
Pipeline Balancing Injection000
Withdrawal
PG&E Storage
Core and Market Center
138132172
Wild Goose Storage276277285
Central Valley Storage565656
Lodi Storage445858
Gill Ranch Storage000
Pipeline Balancing Withdrawal889553
Balancing Gas
Imbalance Gas in Storage**3,6733,6143,464
PG&E Total Gas in Storage89,53989,61789,695

*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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