Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Monday, December 5, 2016 at 7:32 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
12/3/2016No OFO in Effect
12/4/2016No OFO in Effect
12/5/2016No OFO in Effect
12/6/2016No 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 1, posted 10:08 AM PT

Last updated for the Gas Day of 12/05/2016
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf12/2/201612/3/201612/4/201612/5/201612/6/201612/7/201612/8/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100 41194125 4104
40504096 4059
4000 4047
3950 3954
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
12/5/2016
Forecast
for
12/6/2016
Forecast
for
12/7/2016
Forecast
for
12/8/2016
Beginning Inventory4125404740593954
Ending Inventory4047405939544104
Inventory Change-7812-105150
 
Upper Limit4350435043504350
Difference*
(Upper Limit - Ending Inventory)
303291396246
 
Lower Limit4000400040004000
Difference*
(Ending Inventory - Lower Limit)
4759-46104

*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 1, posted 10:08 AM PT

Last updated for the Gas Day of 12/05/2016
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
12/5/2016
Forecast
for
12/6/2016
Forecast
for
12/7/2016
Forecast
for
12/8/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 50.6
4744.646.852.8
Demand
On-System Demand2790293529402685
Off-System Deliveries
SoCal Gas (KRS)142142142142
Southwest Gas12121212
Kern River GT - HDL0000
Transmission Shrinkage23232323
Injection
PG&E Storage Injection (306 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage5055
TOTAL SYSTEM DEMAND2972311231222867
Supply
Interconnect Supply
Gas Transmission Northwest994994994994
Ruby445445445445
California Production26262626
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett8888
Southern Trails0000
El Paso Natural Gas235235235235
Transwestern209209209209
Withdrawal
PG&E Storage Withdrawal (1316 Maximum)*
Core, Market Center, and Pipeline Balancing
294800734734
Wild Goose Storage448100100100
Central Valley Storage39397070
Lodi Storage197197197197
Gill Ranch Storage07200
TOTAL SYSTEM SUPPLY2894312430173017
INVENTORY CHANGE
(Supply - Demand)
-7812-105150
TOTAL CUSTOMER IMBALANCE-140-50-17283

*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
12/5/2016
Forecast
for
12/6/2016
Forecast
for
12/7/2016
Forecast
for
12/8/2016
Injection
PG&E Storage
Core and Market Center
257127127127
Wild Goose Storage207000
Central Valley Storage53532323
Lodi Storage0000
Gill Ranch Storage10101010
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
476929786786
Wild Goose Storage655100100100
Central Valley Storage92929494
Lodi Storage197197197197
Gill Ranch Storage5555
Pipeline Balancing Withdrawal75757575

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

Actual
for
12/2/2016
Actual
for
12/3/2016
Actual
for
12/4/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 50.6
50.748.549.8
Demand
On-System Demand261223042289
Off-System Deliveries
SoCal Gas (KRS)165155154
Southwest Gas131310
Kern River GT - HDL3700
Transmission Shrinkage242323
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND285224952476
Supply
Interconnect Supply
Gas Transmission Northwest107110051004
Ruby462424422
California Production272728
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett877
Southern Trails000
El Paso Natural Gas251285262
Transwestern192213207
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
19221
Wild Goose Storage401310315
Central Valley Storage744340
Lodi Storage200202196
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY287825182482
INVENTORY CHANGE
(Supply - Demand)
26236
TOTAL CUSTOMER IMBALANCE10-43-44

*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
12/2/2016
Actual
for
12/3/2016
Actual
for
12/4/2016
Injection
PG&E Storage
Core and Market Center
202292294
Wild Goose Storage293301319
Central Valley Storage235353
Lodi Storage050
Gill Ranch Storage551010
Pipeline Balancing Injection000
Withdrawal
PG&E Storage
Core and Market Center
364219220
Wild Goose Storage689627626
Central Valley Storage949292
Lodi Storage197202197
Gill Ranch Storage5655
Pipeline Balancing Withdrawal307575
Balancing Gas
Imbalance Gas in Storage**296928912825
PG&E Total Gas in Storage962149602296020

*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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