Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Friday, July 21, 2017 at 1:29 PM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
7/19/2017No OFO in Effect
7/20/2017No OFO in Effect
7/21/2017No OFO in Effect
7/22/2017System 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 09:17 PM PT

Last updated for the Gas Day of 07/21/2017
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
MMcf7/18/20177/19/20177/20/20177/21/20177/22/20177/23/20177/24/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200 4224
4150 4161
4100 4123 4146
40504079
4000 4037 4016
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
7/21/2017
Forecast
for
7/22/2017
Forecast
for
7/23/2017
Forecast
for
7/24/2017
Beginning Inventory4123422441464161
Ending Inventory4224414641614016
Inventory Change101-7815-145
 
Upper Limit4200420042004200
Difference*
(Upper Limit - Ending Inventory)
-245439184
 
Lower Limit3800380038003800
Difference*
(Ending Inventory - Lower Limit)
424346361216

*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 09:17 PM PT

Last updated for the Gas Day of 07/21/2017
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
7/21/2017
Forecast
for
7/22/2017
Forecast
for
7/23/2017
Forecast
for
7/24/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 70.7
71.375.674.974.4
Demand
On-System Demand1700162515901750
Off-System Deliveries
SoCal Gas (KRS)350332332332
Southwest Gas8888
Kern River GT - HDL24242424
Transmission Shrinkage27262626
Injection
PG&E Storage Injection (205 Maximum)*
Core, Market Center, and Pipeline Balancing
133162162162
Wild Goose Storage05622
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage56716666
TOTAL SYSTEM DEMAND2299230422112371
Supply
Interconnect Supply
Gas Transmission Northwest1281124612461246
Ruby606617617617
California Production28282828
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett35333
Southern Trails0000
El Paso Natural Gas176200200200
Transwestern91868686
Withdrawal
PG&E Storage Withdrawal (957 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage181444444
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2399222622262226
INVENTORY CHANGE
(Supply - Demand)
101-7815-145
TOTAL CUSTOMER IMBALANCE182-284-76

*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
7/21/2017
Forecast
for
7/22/2017
Forecast
for
7/23/2017
Forecast
for
7/24/2017
Injection
PG&E Storage
Core and Market Center
242259259259
Wild Goose Storage416403350350
Central Valley Storage0000
Lodi Storage1333333
Gill Ranch Storage7333333
Pipeline Balancing Injection75757070
Withdrawal
PG&E Storage
Core and Market Center
127116116116
Wild Goose Storage421348348348
Central Valley Storage0000
Lodi Storage182777777
Gill Ranch Storage7191919
Pipeline Balancing Withdrawal0000

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

Actual
for
7/18/2017
Actual
for
7/19/2017
Actual
for
7/20/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 70.7
68.670.570.4
Demand
On-System Demand170117271683
Off-System Deliveries
SoCal Gas (KRS)340327352
Southwest Gas687
Kern River GT - HDL231621
Transmission Shrinkage262626
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
120120112
Wild Goose Storage0350
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage573457
TOTAL SYSTEM DEMAND227322922258
Supply
Interconnect Supply
Gas Transmission Northwest135913631400
Ruby545542487
California Production212323
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett5633
Southern Trails000
El Paso Natural Gas245174186
Transwestern309170
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage4551146
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY225122502344
INVENTORY CHANGE
(Supply - Demand)
-22-4286
TOTAL CUSTOMER IMBALANCE492171

*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
7/18/2017
Actual
for
7/19/2017
Actual
for
7/20/2017
Injection
PG&E Storage
Core and Market Center
208218232
Wild Goose Storage438357437
Central Valley Storage110
Lodi Storage1301
Gill Ranch Storage17311
Pipeline Balancing Injection707368
Withdrawal
PG&E Storage
Core and Market Center
103138132
Wild Goose Storage441322437
Central Valley Storage000
Lodi Storage5478149
Gill Ranch Storage17311
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**296029393078
PG&E Total Gas in Storage883398851488668

*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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