Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, March 22, 2017 at 7:18 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
3/20/2017No OFO in Effect
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

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 03:48 PM PT

Last updated for the Gas Day of 03/22/2017
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
MMcf3/19/20173/20/20173/21/20173/22/20173/23/20173/24/20173/25/2017
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
4200 4201
4150 4197
4100 4141
40504072 4085
4000
3950 3974
3900
3850
3800 3847
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
3/22/2017
Forecast
for
3/23/2017
Forecast
for
3/24/2017
Forecast
for
3/25/2017
Beginning Inventory3974408541414201
Ending Inventory4085414142014197
Inventory Change1115660-4
 
Upper Limit4350435043504350
Difference*
(Upper Limit - Ending Inventory)
265209149153
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
185241301297

*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 3, posted 03:48 PM PT

Last updated for the Gas Day of 03/22/2017
Next update expected by 11:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
3/22/2017
Forecast
for
3/23/2017
Forecast
for
3/24/2017
Forecast
for
3/25/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 55
5355.354.554.8
Demand
On-System Demand1865184518601675
Off-System Deliveries
SoCal Gas (KRS)60606060
Southwest Gas7777
Kern River GT - HDL0000
Transmission Shrinkage26292929
Injection
PG&E Storage Injection (244 Maximum)*
Core, Market Center, and Pipeline Balancing
108171111111
Wild Goose Storage063159314
Central Valley Storage00094
Lodi Storage125868686
Gill Ranch Storage0812525
TOTAL SYSTEM DEMAND2191234123362400
Supply
Interconnect Supply
Gas Transmission Northwest1221128612861286
Ruby515582582582
California Production26262626
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett95747474
Southern Trails30303030
El Paso Natural Gas194257257257
Transwestern125141141141
Withdrawal
PG&E Storage Withdrawal (1280 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage54000
Central Valley Storage42000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2302239723972397
INVENTORY CHANGE
(Supply - Demand)
1115660-4
TOTAL CUSTOMER IMBALANCE1639713571

*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
3/22/2017
Forecast
for
3/23/2017
Forecast
for
3/24/2017
Forecast
for
3/25/2017
Injection
PG&E Storage
Core and Market Center
238399245245
Wild Goose Storage390392159314
Central Valley Storage216363157
Lodi Storage135868686
Gill Ranch Storage22353535
Pipeline Balancing Injection75417575
Withdrawal
PG&E Storage
Core and Market Center
205213209209
Wild Goose Storage44332900
Central Valley Storage63636363
Lodi Storage10000
Gill Ranch Storage10101010
Pipeline Balancing Withdrawal0000

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

Actual
for
3/19/2017
Actual
for
3/20/2017
Actual
for
3/21/2017
COMPOSITE TEMPERATURE
Historical Average for current day: 55
60.359.759
Demand
On-System Demand152017511731
Off-System Deliveries
SoCal Gas (KRS)271657
Southwest Gas578
Kern River GT - HDL000
Transmission Shrinkage302927
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
23018055
Wild Goose Storage3503500
Central Valley Storage94910
Lodi Storage171155156
Gill Ranch Storage888858
TOTAL SYSTEM DEMAND251526672092
Supply
Interconnect Supply
Gas Transmission Northwest120712141214
Ruby757756496
California Production262728
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett766393
Southern Trails13132
El Paso Natural Gas259213210
Transwestern182156164
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
0012
Wild Goose Storage000
Central Valley Storage000
Lodi Storage000
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY252124422219
INVENTORY CHANGE
(Supply - Demand)
6-225127
TOTAL CUSTOMER IMBALANCE34-21091

*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
3/19/2017
Actual
for
3/20/2017
Actual
for
3/21/2017
Injection
PG&E Storage
Core and Market Center
401401333
Wild Goose Storage766766388
Central Valley Storage15715763
Lodi Storage174150159
Gill Ranch Storage413838
Pipeline Balancing Injection59320
Withdrawal
PG&E Storage
Core and Market Center
174197201
Wild Goose Storage405414393
Central Valley Storage636363
Lodi Storage000
Gill Ranch Storage101210
Pipeline Balancing Withdrawal0066
Balancing Gas
Imbalance Gas in Storage**168815641564
PG&E Total Gas in Storage645936487965116

*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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