Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Friday, March 24, 2017 at 2:05 PM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
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
3/25/2017No 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 12:45 PM PT

Last updated for the Gas Day of 03/24/2017
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
MMcf3/21/20173/22/20173/23/20173/24/20173/25/20173/26/20173/27/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200
4150 4153
4100 4104 4135
4050 4071
4000 4008
39503974 3950
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
3/24/2017
Forecast
for
3/25/2017
Forecast
for
3/26/2017
Forecast
for
3/27/2017
Beginning Inventory4008395041044153
Ending Inventory3950410441534135
Inventory Change-5815449-18
 
Upper Limit4350435043504450
Difference*
(Upper Limit - Ending Inventory)
400246197315
 
Lower Limit3900390039004000
Difference*
(Ending Inventory - Lower Limit)
50204253135

*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 12:45 PM PT

Last updated for the Gas Day of 03/24/2017
Next update expected by 3:30 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
3/24/2017
Forecast
for
3/25/2017
Forecast
for
3/26/2017
Forecast
for
3/27/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 55.2
54.255.554.255.1
Demand
On-System Demand1925163517401875
Off-System Deliveries
SoCal Gas (KRS)60606060
Southwest Gas7777
Kern River GT - HDL0000
Transmission Shrinkage30323232
Injection
PG&E Storage Injection (332 Maximum)*
Core, Market Center, and Pipeline Balancing
213182207289
Wild Goose Storage130349349349
Central Valley Storage0949494
Lodi Storage179106106106
Gill Ranch Storage24343434
TOTAL SYSTEM DEMAND2567249826282845
Supply
Interconnect Supply
Gas Transmission Northwest1266119611961196
Ruby720886886886
California Production32323232
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett76111111111
Southern Trails30303030
El Paso Natural Gas232249249249
Transwestern154149149149
Withdrawal
PG&E Storage Withdrawal (1300 Maximum)*
Core, Market Center, and Pipeline Balancing
0025175
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2510265226772827
INVENTORY CHANGE
(Supply - Demand)
-5815449-18
TOTAL CUSTOMER IMBALANCE-6522612456

*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
3/24/2017
Forecast
for
3/25/2017
Forecast
for
3/26/2017
Forecast
for
3/27/2017
Injection
PG&E Storage
Core and Market Center
426281281245
Wild Goose Storage709744744744
Central Valley Storage63157157157
Lodi Storage179106106106
Gill Ranch Storage34505050
Pipeline Balancing Injection0757575
Withdrawal
PG&E Storage
Core and Market Center
213174174206
Wild Goose Storage579395395395
Central Valley Storage63636363
Lodi Storage0000
Gill Ranch Storage10151515
Pipeline Balancing Withdrawal0000

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

Actual
for
3/21/2017
Actual
for
3/22/2017
Actual
for
3/23/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 55.2
5952.655
Demand
On-System Demand173119201848
Off-System Deliveries
SoCal Gas (KRS)576543
Southwest Gas889
Kern River GT - HDL000
Transmission Shrinkage272629
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
5576208
Wild Goose Storage0040
Central Valley Storage000
Lodi Storage156114218
Gill Ranch Storage58064
TOTAL SYSTEM DEMAND209222092459
Supply
Interconnect Supply
Gas Transmission Northwest121412181268
Ruby496516582
California Production282727
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett939676
Southern Trails23030
El Paso Natural Gas210196262
Transwestern164129147
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
1200
Wild Goose Storage0500
Central Valley Storage0444
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY221923062396
INVENTORY CHANGE
(Supply - Demand)
12797-63
TOTAL CUSTOMER IMBALANCE9112411

*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
3/21/2017
Actual
for
3/22/2017
Actual
for
3/23/2017
Injection
PG&E Storage
Core and Market Center
333238403
Wild Goose Storage388390389
Central Valley Storage632163
Lodi Storage159125218
Gill Ranch Storage382229
Pipeline Balancing Injection04271
Withdrawal
PG&E Storage
Core and Market Center
201205223
Wild Goose Storage393443342
Central Valley Storage636363
Lodi Storage0100
Gill Ranch Storage101010
Pipeline Balancing Withdrawal6600
Balancing Gas
Imbalance Gas in Storage**156417191695
PG&E Total Gas in Storage651166525865258

*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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