Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Sunday, June 25, 2017 at 7:19 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
6/23/2017No OFO in Effect
6/24/2017System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
6/25/2017No OFO in Effect
6/26/2017No 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 1, posted 09:04 AM PT

Last updated for the Gas Day of 06/25/2017
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf6/22/20176/23/20176/24/20176/25/20176/26/20176/27/20176/28/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
43004333
4250
4200
4150 4183
4100 4143
4050 4063
4000 4034 4011
3950 3969
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
6/25/2017
Forecast
for
6/26/2017
Forecast
for
6/27/2017
Forecast
for
6/28/2017
Beginning Inventory4143403439694011
Ending Inventory4034396940114063
Inventory Change-109-654252
 
Upper Limit4200420042004200
Difference*
(Upper Limit - Ending Inventory)
166231189137
 
Lower Limit3800380038003800
Difference*
(Ending Inventory - Lower Limit)
234169211263

*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 1, posted 09:04 AM PT

Last updated for the Gas Day of 06/25/2017
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
6/25/2017
Forecast
for
6/26/2017
Forecast
for
6/27/2017
Forecast
for
6/28/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 68.9
68.96766.268.7
Demand
On-System Demand1495152515251515
Off-System Deliveries
SoCal Gas (KRS)312312312312
Southwest Gas8888
Kern River GT - HDL24242424
Transmission Shrinkage25252525
Injection
PG&E Storage Injection (263 Maximum)*
Core, Market Center, and Pipeline Balancing
1841099393
Wild Goose Storage909000
Central Valley Storage0000
Lodi Storage43434343
Gill Ranch Storage33333333
TOTAL SYSTEM DEMAND2215217020642054
Supply
Interconnect Supply
Gas Transmission Northwest1456145614561456
Ruby333333333333
California Production29292929
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett22222222
Southern Trails0000
El Paso Natural Gas212212212212
Transwestern46464646
Withdrawal
PG&E Storage Withdrawal (1568 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage8888
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2105210521052105
INVENTORY CHANGE
(Supply - Demand)
-109-654252
TOTAL CUSTOMER IMBALANCE-109-1393949

*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
6/25/2017
Forecast
for
6/26/2017
Forecast
for
6/27/2017
Forecast
for
6/28/2017
Injection
PG&E Storage
Core and Market Center
418418366366
Wild Goose Storage43243200
Central Valley Storage19191919
Lodi Storage126126126126
Gill Ranch Storage33333333
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
233233273273
Wild Goose Storage34234200
Central Valley Storage27272727
Lodi Storage83838383
Gill Ranch Storage0000
Pipeline Balancing Withdrawal07500

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

Actual
for
6/22/2017
Actual
for
6/23/2017
Actual
for
6/24/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 68.9
80.973.971.5
Demand
On-System Demand197117571535
Off-System Deliveries
SoCal Gas (KRS)316286271
Southwest Gas876
Kern River GT - HDL132423
Transmission Shrinkage252425
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
115178168
Wild Goose Storage0085
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage0039
TOTAL SYSTEM DEMAND244922762152
Supply
Interconnect Supply
Gas Transmission Northwest140013681479
Ruby293418327
California Production252625
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett3427
Southern Trails000
El Paso Natural Gas221269209
Transwestern191345
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
400
Wild Goose Storage28020
Central Valley Storage87170
Lodi Storage225100
Gill Ranch Storage1300
TOTAL SYSTEM SUPPLY257221262112
INVENTORY CHANGE
(Supply - Demand)
123-150-40
TOTAL CUSTOMER IMBALANCE301-1-131

*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
6/22/2017
Actual
for
6/23/2017
Actual
for
6/24/2017
Injection
PG&E Storage
Core and Market Center
336333419
Wild Goose Storage321467434
Central Valley Storage191919
Lodi Storage46114109
Gill Ranch Storage252843
Pipeline Balancing Injection551620
Withdrawal
PG&E Storage
Core and Market Center
255316235
Wild Goose Storage586493331
Central Valley Storage1072727
Lodi Storage27217294
Gill Ranch Storage63280
Pipeline Balancing Withdrawal0016
Balancing Gas
Imbalance Gas in Storage**421642074045
PG&E Total Gas in Storage843748451084688

*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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