Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Thursday, March 23, 2017 at 7:19 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
3/21/2017No OFO in Effect
3/22/2017System Wide OFO in Effect8% Stage 1 at $ .25 /Dth Low Inventory
3/23/2017No OFO in Effect
3/24/2017No 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 2, posted 12:44 PM PT

Last updated for the Gas Day of 03/23/2017
Next update expected by 3:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

Ending Inventory HistoryEnding Inventory Forecasts
MMcf3/20/20173/21/20173/22/20173/23/20173/24/20173/25/20173/26/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200 4232
4150 4152
4100
4050 4071
4000 4016
3950 3974 3992
3900
3850
38003847
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
3/23/2017
Forecast
for
3/24/2017
Forecast
for
3/25/2017
Forecast
for
3/26/2017
Beginning Inventory4071399240164152
Ending Inventory3992401641524232
Inventory Change-792413680
 
Upper Limit4350435043504350
Difference*
(Upper Limit - Ending Inventory)
358334198118
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
92116252332

*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 2, posted 12:44 PM PT

Last updated for the Gas Day of 03/23/2017
Next update expected by 3:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
3/23/2017
Forecast
for
3/24/2017
Forecast
for
3/25/2017
Forecast
for
3/26/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 55.1
54.254.354.754.5
Demand
On-System Demand1870189017001755
Off-System Deliveries
SoCal Gas (KRS)36606060
Southwest Gas7777
Kern River GT - HDL0000
Transmission Shrinkage29313131
Injection
PG&E Storage Injection (299 Maximum)*
Core, Market Center, and Pipeline Balancing
209243112112
Wild Goose Storage41130314314
Central Valley Storage0000
Lodi Storage218106169169
Gill Ranch Storage60612424
TOTAL SYSTEM DEMAND2470252724162471
Supply
Interconnect Supply
Gas Transmission Northwest1270128512851285
Ruby580726726726
California Production32323232
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett75949494
Southern Trails30303030
El Paso Natural Gas264233233233
Transwestern141152152152
Withdrawal
PG&E Storage Withdrawal (1297 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2391255225522552
INVENTORY CHANGE
(Supply - Demand)
-792413680
TOTAL CUSTOMER IMBALANCE-1092205150

*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
3/23/2017
Forecast
for
3/24/2017
Forecast
for
3/25/2017
Forecast
for
3/26/2017
Injection
PG&E Storage
Core and Market Center
399409245245
Wild Goose Storage392711314314
Central Valley Storage63636363
Lodi Storage218106169169
Gill Ranch Storage29343434
Pipeline Balancing Injection75757575
Withdrawal
PG&E Storage
Core and Market Center
223204208208
Wild Goose Storage35158100
Central Valley Storage63636363
Lodi Storage0000
Gill Ranch Storage10101010
Pipeline Balancing Withdrawal0000

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

Actual
for
3/20/2017
Actual
for
3/21/2017
Actual
for
3/22/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 55.1
59.75952.6
Demand
On-System Demand175117311920
Off-System Deliveries
SoCal Gas (KRS)165765
Southwest Gas788
Kern River GT - HDL000
Transmission Shrinkage292726
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
1805576
Wild Goose Storage35000
Central Valley Storage9100
Lodi Storage155156114
Gill Ranch Storage88580
TOTAL SYSTEM DEMAND266720922209
Supply
Interconnect Supply
Gas Transmission Northwest121412141218
Ruby756496516
California Production272827
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett639396
Southern Trails13230
El Paso Natural Gas213210196
Transwestern156164129
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
0120
Wild Goose Storage0050
Central Valley Storage0044
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY244222192306
INVENTORY CHANGE
(Supply - Demand)
-22512797
TOTAL CUSTOMER IMBALANCE-21091124

*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
3/20/2017
Actual
for
3/21/2017
Actual
for
3/22/2017
Injection
PG&E Storage
Core and Market Center
401333238
Wild Goose Storage766388390
Central Valley Storage1576321
Lodi Storage150159125
Gill Ranch Storage383822
Pipeline Balancing Injection32042
Withdrawal
PG&E Storage
Core and Market Center
197201205
Wild Goose Storage414393443
Central Valley Storage636363
Lodi Storage0010
Gill Ranch Storage121010
Pipeline Balancing Withdrawal0660
Balancing Gas
Imbalance Gas in Storage**156415641720
PG&E Total Gas in Storage648796511665182

*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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