Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Saturday, February 18, 2017 at 7:18 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
2/16/2017System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
2/17/2017No OFO in Effect
2/18/2017System Wide OFO in Effect5% Stage 1 at $ .25 /Dth High Inventory
2/19/2017No 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.

Return to top


System Inventory Status

Plan 4, posted 09:58 PM PT

Last updated for the Gas Day of 02/18/2017
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
MMcf2/15/20172/16/20172/17/20172/18/20172/19/20172/20/20172/21/2017
4750
4700
4650
4600
4550
4500
4450
4400
43504362
4300
4250
4200 4240
4150
4100 4119
4050
4000 40334043
3950 3998
3900 3906
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.

Return to top


System Inventory Summary

Forecast
for
2/18/2017
Forecast
for
2/19/2017
Forecast
for
2/20/2017
Forecast
for
2/21/2017
Beginning Inventory4119403340433998
Ending Inventory4033404339983906
Inventory Change-8610-45-92
 
Upper Limit4350435043504350
Difference*
(Upper Limit - Ending Inventory)
317307352444
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
133143986

*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.

Return to top


PG&E Supply and Demand Forecast
(Net Physical Flows)

Plan 4, posted 09:58 PM PT

Last updated for the Gas Day of 02/18/2017
Next update expected by 8:00 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
2/18/2017
Forecast
for
2/19/2017
Forecast
for
2/20/2017
Forecast
for
2/21/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 51.8
52.155.258.554.4
Demand
On-System Demand1,8451,9152,0052,050
Off-System Deliveries
SoCal Gas (KRS)61616161
Southwest Gas12121212
Kern River GT - HDL0000
Transmission Shrinkage28292929
Injection
PG&E Storage Injection (86 Maximum)*
Core, Market Center, and Pipeline Balancing
003636
Wild Goose Storage286282282282
Central Valley Storage2222
Lodi Storage330232194194
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2,5642,5322,6202,665
Supply
Interconnect Supply
Gas Transmission Northwest1,1461,1431,1441,143
Ruby492491492492
California Production28282828
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett214245245245
Southern Trails0000
El Paso Natural Gas324366366366
Transwestern165165165165
Withdrawal
PG&E Storage Withdrawal (350 Maximum)*
Core, Market Center, and Pipeline Balancing
28225353
Wild Goose Storage0000
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage81818181
TOTAL SYSTEM SUPPLY2,4782,5422,5742,574
INVENTORY CHANGE
(Supply - Demand)
-8610-45-92
TOTAL CUSTOMER IMBALANCE-157-62-111-157

*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.

Return to top


PG&E Storage Activity Forecast
(Scheduled Volumes)

Forecast
for
2/18/2017
Forecast
for
2/19/2017
Forecast
for
2/20/2017
Forecast
for
2/21/2017
Injection
PG&E Storage
Core and Market Center
220218219219
Wild Goose Storage719714714714
Central Valley Storage99999999
Lodi Storage382284194194
Gill Ranch Storage26262626
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
265258254254
Wild Goose Storage433433433433
Central Valley Storage97979797
Lodi Storage535300
Gill Ranch Storage13131313
Pipeline Balancing Withdrawal75757575

Return to top


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

Actual
for
2/15/2017
Actual
for
2/16/2017
Actual
for
2/17/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 51.8
55.857.255
Demand
On-System Demand1,9761,9142,098
Off-System Deliveries
SoCal Gas (KRS)70100115
Southwest Gas666
Kern River GT - HDL101520
Transmission Shrinkage303031
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
000
Wild Goose Storage60240235
Central Valley Storage000
Lodi Storage76179174
Gill Ranch Storage406723
TOTAL SYSTEM DEMAND2,3602,5882,682
Supply
Interconnect Supply
Gas Transmission Northwest1,1481,2301,184
Ruby805800783
California Production272728
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett01827
Southern Trails677675
El Paso Natural Gas257218373
Transwestern1259690
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
1100
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY2,4402,4662,561
INVENTORY CHANGE
(Supply - Demand)
80-122-121
TOTAL CUSTOMER IMBALANCE198-58-51

*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.

Return to top


PG&E Recent Storage Activity
(Scheduled Volumes)

Actual
for
2/15/2017
Actual
for
2/16/2017
Actual
for
2/17/2017
Injection
PG&E Storage
Core and Market Center
210341285
Wild Goose Storage633695657
Central Valley Storage999999
Lodi Storage136239231
Gill Ranch Storage855
Pipeline Balancing Injection1257357
Withdrawal
PG&E Storage
Core and Market Center
290358315
Wild Goose Storage555455431
Central Valley Storage989797
Lodi Storage606060
Gill Ranch Storage8510
Pipeline Balancing Withdrawal000
Balancing Gas
Imbalance Gas in Storage**1,0829561,033
PG&E Total Gas in Storage64,34064,38664,443

*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.

Return to top