Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, April 1, 2015 at 7:18 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
3/30/2015No OFO in Effect
3/31/2015No OFO in Effect
4/1/2015No OFO in Effect
4/2/2015No 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 3, posted 03:26 PM PT

Last updated for the Gas Day of 04/01/2015
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
MMcf3/29/20153/30/20153/31/20154/1/20154/2/20154/3/20154/4/2015
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150
4100
40504066 407240734067 4055
4000 4011
3950 3967
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
4/1/2015
Forecast
for
4/2/2015
Forecast
for
4/3/2015
Forecast
for
4/4/2015
Beginning Inventory4072407340674011
Ending Inventory4073406740114055
Inventory Change1-6-5644
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
227233289245
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
173167111155

*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 03:26 PM PT

Last updated for the Gas Day of 04/01/2015
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
4/1/2015
Forecast
for
4/2/2015
Forecast
for
4/3/2015
Forecast
for
4/4/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 56.3
57.857.558.356.4
Demand
On-System Demand2095211020101905
Off-System Deliveries
SoCal Gas (KRS)149156156156
Southwest Gas3444
Kern River GT - HDL0000
Transmission Shrinkage24242424
Injection
PG&E Storage Injection (364 Maximum)*
Core, Market Center, and Pipeline Balancing
215156242247
Wild Goose Storage0000
Central Valley Storage897373
Lodi Storage0111
Gill Ranch Storage60525252
TOTAL SYSTEM DEMAND2554251225612461
Supply
Interconnect Supply
Gas Transmission Northwest1085104210421042
Ruby332360360360
California Production40404040
SoCal Gas (KRS)0000
Kern River GT - HDL46111
Kern River GT - Daggett255269269269
Southern Trails0404040
El Paso Natural Gas217171171171
Transwestern243250250250
Withdrawal
PG&E Storage Withdrawal (1597 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage322334334334
Central Valley Storage0000
Lodi Storage14000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2555250625062506
INVENTORY CHANGE
(Supply - Demand)
1-6-5644
TOTAL CUSTOMER IMBALANCE-071-10116

*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
4/1/2015
Forecast
for
4/2/2015
Forecast
for
4/3/2015
Forecast
for
4/4/2015
Injection
PG&E Storage
Core and Market Center
301242322297
Wild Goose Storage170164164164
Central Valley Storage3436100100
Lodi Storage43595959
Gill Ranch Storage88838383
Pipeline Balancing Injection0754575
Withdrawal
PG&E Storage
Core and Market Center
86161125125
Wild Goose Storage492498498498
Central Valley Storage27272727
Lodi Storage58585858
Gill Ranch Storage29313131
Pipeline Balancing Withdrawal0000

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

Actual
for
3/29/2015
Actual
for
3/30/2015
Actual
for
3/31/2015
COMPOSITE TEMPERATURE
Historical Average for current day: 56.3
63.86259.9
Demand
On-System Demand169520121984
Off-System Deliveries
SoCal Gas (KRS)506869
Southwest Gas333
Kern River GT - HDL000
Transmission Shrinkage262626
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
272114102
Wild Goose Storage000
Central Valley Storage3070
Lodi Storage1826578
Gill Ranch Storage1019533
TOTAL SYSTEM DEMAND235723902294
Supply
Interconnect Supply
Gas Transmission Northwest108310941063
Ruby340342385
California Production323230
SoCal Gas (KRS)000
Kern River GT - HDL00148
Kern River GT - Daggett326296199
Southern Trails393939
El Paso Natural Gas219235165
Transwestern281252321
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage0050
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY232022912399
INVENTORY CHANGE
(Supply - Demand)
-37-99105
TOTAL CUSTOMER IMBALANCE79-13065

*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
3/29/2015
Actual
for
3/30/2015
Actual
for
3/31/2015
Injection
PG&E Storage
Core and Market Center
373352333
Wild Goose Storage459452480
Central Valley Storage556049
Lodi Storage273138161
Gill Ranch Storage949535
Pipeline Balancing Injection8100
Withdrawal
PG&E Storage
Core and Market Center
182185180
Wild Goose Storage462466525
Central Valley Storage454550
Lodi Storage877989
Gill Ranch Storage002
Pipeline Balancing Withdrawal05351
Balancing Gas
Imbalance Gas in Storage**294928552836
PG&E Total Gas in Storage680766834868462

*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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