Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Sunday, July 24, 2016 at 7:17 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
7/22/2016No OFO in Effect
7/23/2016No OFO in Effect
7/24/2016No OFO in Effect
7/25/2016No 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 05:12 AM PT

Last updated for the Gas Day of 07/23/2016
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
MMcf7/20/20167/21/20167/22/20167/23/20167/24/20167/25/20167/26/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200 42134220
4150 4158
4100
4050 4087 40694068
4000
39503996
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
7/23/2016
Forecast
for
7/24/2016
Forecast
for
7/25/2016
Forecast
for
7/26/2016
Beginning Inventory4213422041584069
Ending Inventory4220415840694068
Inventory Change7-62-89-1
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
80142231232
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
320258169168

*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 05:12 AM PT

Last updated for the Gas Day of 07/23/2016
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
7/23/2016
Forecast
for
7/24/2016
Forecast
for
7/25/2016
Forecast
for
7/26/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 70.6
75.574.672.975.9
Demand
On-System Demand2,0532,1152,2152,255
Off-System Deliveries
SoCal Gas (KRS)295303303303
Southwest Gas2222
Kern River GT - HDL62646464
Transmission Shrinkage27272727
Injection
PG&E Storage Injection (97 Maximum)*
Core, Market Center, and Pipeline Balancing
555700
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2,4942,5672,6102,650
Supply
Interconnect Supply
Gas Transmission Northwest1,1791,1961,1961,196
Ruby775775775775
California Production31323232
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett4444
Southern Trails0000
El Paso Natural Gas163161161161
Transwestern77777777
Withdrawal
PG&E Storage Withdrawal (322 Maximum)*
Core, Market Center, and Pipeline Balancing
00066
Wild Goose Storage110101101101
Central Valley Storage90878787
Lodi Storage52464646
Gill Ranch Storage192743105
TOTAL SYSTEM SUPPLY2,5002,5062,5222,649
INVENTORY CHANGE
(Supply - Demand)
7-62-89-1
TOTAL CUSTOMER IMBALANCE7912-88-77

*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
7/23/2016
Forecast
for
7/24/2016
Forecast
for
7/25/2016
Forecast
for
7/26/2016
Injection
PG&E Storage
Core and Market Center
168167167116
Wild Goose Storage279292292292
Central Valley Storage2222
Lodi Storage107101101101
Gill Ranch Storage17171717
Pipeline Balancing Injection787520
Withdrawal
PG&E Storage
Core and Market Center
165169169169
Wild Goose Storage395393393393
Central Valley Storage89898989
Lodi Storage157147147147
Gill Ranch Storage60606060
Pipeline Balancing Withdrawal00075

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

Actual
for
7/20/2016
Actual
for
7/21/2016
Actual
for
7/22/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 70.6
69.368.572.1
Demand
On-System Demand1,9861,9992,085
Off-System Deliveries
SoCal Gas (KRS)285296303
Southwest Gas222
Kern River GT - HDL537977
Transmission Shrinkage262728
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage2300
Gill Ranch Storage000
TOTAL SYSTEM DEMAND2,3752,4022,495
Supply
Interconnect Supply
Gas Transmission Northwest1,2741,3081,298
Ruby642645667
California Production343233
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett665
Southern Trails000
El Paso Natural Gas161182255
Transwestern666566
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
03230
Wild Goose Storage40100100
Central Valley Storage7048
Lodi Storage02631
Gill Ranch Storage689787
TOTAL SYSTEM SUPPLY2,2972,4932,621
INVENTORY CHANGE
(Supply - Demand)
-7891126
TOTAL CUSTOMER IMBALANCE-1112147

*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
7/20/2016
Actual
for
7/21/2016
Actual
for
7/22/2016
Injection
PG&E Storage
Core and Market Center
118118166
Wild Goose Storage224227265
Central Valley Storage2212
Lodi Storage656252
Gill Ranch Storage171717
Pipeline Balancing Injection000
Withdrawal
PG&E Storage
Core and Market Center
138154180
Wild Goose Storage278318361
Central Valley Storage81260
Lodi Storage478882
Gill Ranch Storage235142
Pipeline Balancing Withdrawal415779
Balancing Gas
Imbalance Gas in Storage**3,5503,5403,610
PG&E Total Gas in Storage95,35795,27095,177

*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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