Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Saturday, July 30, 2016 at 7:17 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
7/28/2016System Wide OFO in Effect5% Stage 1 at $ .25 /Dth Low Inventory
7/29/2016No OFO in Effect
7/30/2016No OFO in Effect
7/31/2016No 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 3, posted 04:22 PM PT

Last updated for the Gas Day of 07/30/2016
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf7/27/20167/28/20167/29/20167/30/20167/31/20168/1/20168/2/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150 4194
41004118 4124 41084104
4050 4052 4091
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
7/30/2016
Forecast
for
7/31/2016
Forecast
for
8/1/2016
Forecast
for
8/2/2016
Beginning Inventory4124405241084104
Ending Inventory4052410841044091
Inventory Change-7256-4-13
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
248192196209
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
152208204191

*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 3, posted 04:22 PM PT

Last updated for the Gas Day of 07/30/2016
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
7/30/2016
Forecast
for
7/31/2016
Forecast
for
8/1/2016
Forecast
for
8/2/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 70.6
73.271.970.771.2
Demand
On-System Demand2075203523002310
Off-System Deliveries
SoCal Gas (KRS)315315315315
Southwest Gas2222
Kern River GT - HDL89898989
Transmission Shrinkage27282826
Injection
PG&E Storage Injection (98 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage52000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2561246927342742
Supply
Interconnect Supply
Gas Transmission Northwest1191126212621150
Ruby788789789710
California Production32323232
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett4444
Southern Trails0000
El Paso Natural Gas203192192192
Transwestern71717171
Withdrawal
PG&E Storage Withdrawal (333 Maximum)*
Core, Market Center, and Pipeline Balancing
007979
Wild Goose Storage12187130170
Central Valley Storage48474747
Lodi Storage0400150
Gill Ranch Storage321124124
TOTAL SYSTEM SUPPLY2489252627302729
INVENTORY CHANGE
(Supply - Demand)
-7256-4-13
TOTAL CUSTOMER IMBALANCE-3081-85-96

*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
7/30/2016
Forecast
for
7/31/2016
Forecast
for
8/1/2016
Forecast
for
8/2/2016
Injection
PG&E Storage
Core and Market Center
143142120120
Wild Goose Storage34437800
Central Valley Storage2222
Lodi Storage1192200
Gill Ranch Storage18491717
Pipeline Balancing Injection483100
Withdrawal
PG&E Storage
Core and Market Center
190173214214
Wild Goose Storage465465130170
Central Valley Storage50505050
Lodi Storage67620150
Gill Ranch Storage50505050
Pipeline Balancing Withdrawal007575

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

Actual
for
7/27/2016
Actual
for
7/28/2016
Actual
for
7/29/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 70.6
76.874.875.2
Demand
On-System Demand259127342558
Off-System Deliveries
SoCal Gas (KRS)275312306
Southwest Gas222
Kern River GT - HDL899092
Transmission Shrinkage272728
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM DEMAND298431652986
Supply
Interconnect Supply
Gas Transmission Northwest115111881178
Ruby786771785
California Production333433
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett400
Southern Trails000
El Paso Natural Gas239222278
Transwestern704969
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
108649
Wild Goose Storage120300155
Central Valley Storage9611650
Lodi Storage176400193
Gill Ranch Storage136155126
TOTAL SYSTEM SUPPLY292032412917
INVENTORY CHANGE
(Supply - Demand)
-6476-70
TOTAL CUSTOMER IMBALANCE-142172-164

*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
7/27/2016
Actual
for
7/28/2016
Actual
for
7/29/2016
Injection
PG&E Storage
Core and Market Center
119122145
Wild Goose Storage431344351
Central Valley Storage222
Lodi Storage522222
Gill Ranch Storage201825
Pipeline Balancing Injection0760
Withdrawal
PG&E Storage
Core and Market Center
209204207
Wild Goose Storage557646503
Central Valley Storage9911751
Lodi Storage223422213
Gill Ranch Storage9417360
Pipeline Balancing Withdrawal81079
Balancing Gas
Imbalance Gas in Storage**343736883525
PG&E Total Gas in Storage948489467894672

*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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