Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Monday, May 25, 2015 at 7:16 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
5/23/2015No OFO in Effect
5/24/2015No OFO in Effect
5/25/2015No OFO in Effect
5/26/2015No 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 4, posted 09:28 PM PT

Last updated for the Gas Day of 05/25/2015
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
MMcf5/22/20155/23/20155/24/20155/25/20155/26/20155/27/20155/28/2015
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150 4193
4100 4130 4117
4050 4091
40004013 4049
3950
3900 3947
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
5/25/2015
Forecast
for
5/26/2015
Forecast
for
5/27/2015
Forecast
for
5/28/2015
Beginning Inventory4193404941173947
Ending Inventory4049411739474091
Inventory Change-14468-170144
 
Upper Limit4300435043004300
Difference*
(Upper Limit - Ending Inventory)
251233353209
 
Lower Limit3900400039003900
Difference*
(Ending Inventory - Lower Limit)
14911747191

*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 4, posted 09:28 PM PT

Last updated for the Gas Day of 05/25/2015
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
5/25/2015
Forecast
for
5/26/2015
Forecast
for
5/27/2015
Forecast
for
5/28/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 64.5
61.462.664.967.5
Demand
On-System Demand1,7651,8602,0902,085
Off-System Deliveries
SoCal Gas (KRS)99147198198
Southwest Gas4333
Kern River GT - HDL0000
Transmission Shrinkage28322832
Injection
PG&E Storage Injection (400 Maximum)*
Core, Market Center, and Pipeline Balancing
274250178228
Wild Goose Storage2632707575
Central Valley Storage61616161
Lodi Storage164987575
Gill Ranch Storage95953636
TOTAL SYSTEM DEMAND2,7542,8172,7442,793
Supply
Interconnect Supply
Gas Transmission Northwest1,1281,1761,1761,176
Ruby619620620620
California Production38383838
SoCal Gas (KRS)0000
Kern River GT - HDL02715027
Kern River GT - Daggett7392150124
Southern Trails12404040
El Paso Natural Gas546640250659
Transwestern195252150252
Withdrawal
PG&E Storage Withdrawal (1,810 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2,6102,8862,5742,937
INVENTORY CHANGE
(Supply - Demand)
-14468-170144
TOTAL CUSTOMER IMBALANCE-12565-226141

*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
5/25/2015
Forecast
for
5/26/2015
Forecast
for
5/27/2015
Forecast
for
5/28/2015
Injection
PG&E Storage
Core and Market Center
371373358358
Wild Goose Storage4995037575
Central Valley Storage96969696
Lodi Storage2051297575
Gill Ranch Storage36363636
Pipeline Balancing Injection50000
Withdrawal
PG&E Storage
Core and Market Center
8763129130
Wild Goose Storage23723200
Central Valley Storage34343434
Lodi Storage413100
Gill Ranch Storage0000
Pipeline Balancing Withdrawal00500

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

Actual
for
5/22/2015
Actual
for
5/23/2015
Actual
for
5/24/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 64.5
61.661.261.2
Demand
On-System Demand1,9531,7121,702
Off-System Deliveries
SoCal Gas (KRS)224178168
Southwest Gas343
Kern River GT - HDL000
Transmission Shrinkage323333
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
295350351
Wild Goose Storage190270270
Central Valley Storage06768
Lodi Storage127195198
Gill Ranch Storage479595
TOTAL SYSTEM DEMAND2,8712,9042,888
Supply
Interconnect Supply
Gas Transmission Northwest1,2931,2311,218
Ruby583623609
California Production373838
SoCal Gas (KRS)000
Kern River GT - HDL202727
Kern River GT - Daggett190172134
Southern Trails294040
El Paso Natural Gas522631634
Transwestern223260250
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY2,8983,0212,951
INVENTORY CHANGE
(Supply - Demand)
2711763
TOTAL CUSTOMER IMBALANCE106193189

*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
5/22/2015
Actual
for
5/23/2015
Actual
for
5/24/2015
Injection
PG&E Storage
Core and Market Center
291372372
Wild Goose Storage429501500
Central Valley Storage399595
Lodi Storage158226226
Gill Ranch Storage363636
Pipeline Balancing Injection88101102
Withdrawal
PG&E Storage
Core and Market Center
636363
Wild Goose Storage233231231
Central Valley Storage343434
Lodi Storage313131
Gill Ranch Storage1000
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**2,0422,2382,449
PG&E Total Gas in Storage81,28481,59982,009

*Until yesterday's final figures are released, all numbers 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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