Operating Data | California Gas Transmission Pipeline Status

OFO/EFO Outlook

Last Updated Wednesday, August 24, 2016 at 7:17 AM
Gas DayActivityToleranceStage/Noncompliance ChargeReason
8/22/2016No OFO in Effect
8/23/2016No OFO in Effect
8/24/2016No OFO in Effect
8/25/2016No 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 07:42 AM PT

Last updated for the Gas Day of 08/24/2016
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
MMcf8/21/20168/22/20168/23/20168/24/20168/25/20168/26/20168/27/2016
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300
4250
42004245
4150 4185
4100 4133
4050
4000 4035 4042
3950 3990
3900 3942
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
8/24/2016
Forecast
for
8/25/2016
Forecast
for
8/26/2016
Forecast
for
8/27/2016
Beginning Inventory4133403539423990
Ending Inventory4035394239904042
Inventory Change-98-934852
 
Upper Limit4300430043004300
Difference*
(Upper Limit - Ending Inventory)
265358310258
 
Lower Limit3900390039003900
Difference*
(Ending Inventory - Lower Limit)
1354290142

*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 07:42 AM PT

Last updated for the Gas Day of 08/24/2016
Next update expected by 1:00 PM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)
Forecast
for
8/24/2016
Forecast
for
8/25/2016
Forecast
for
8/26/2016
Forecast
for
8/27/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 70
67.967.667.967.8
Demand
On-System Demand2010202520051880
Off-System Deliveries
SoCal Gas (KRS)288288288288
Southwest Gas2222
Kern River GT - HDL52525252
Transmission Shrinkage27272727
Injection
PG&E Storage Injection (290 Maximum)*
Core, Market Center, and Pipeline Balancing
0000
Wild Goose Storage123000
Central Valley Storage4444
Lodi Storage69000
Gill Ranch Storage0000
TOTAL SYSTEM DEMAND2576239823782253
Supply
Interconnect Supply
Gas Transmission Northwest1223122312231223
Ruby618618618618
California Production32323232
SoCal Gas (KRS)0000
Kern River GT - HDL0000
Kern River GT - Daggett6666
Southern Trails0000
El Paso Natural Gas268268268268
Transwestern81818181
Withdrawal
PG&E Storage Withdrawal (601 Maximum)*
Core, Market Center, and Pipeline Balancing
2492814928
Wild Goose Storage0484848
Central Valley Storage0000
Lodi Storage0000
Gill Ranch Storage0000
TOTAL SYSTEM SUPPLY2478230524262305
INVENTORY CHANGE
(Supply - Demand)
-98-934852
TOTAL CUSTOMER IMBALANCE-173-1692151

*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
8/24/2016
Forecast
for
8/25/2016
Forecast
for
8/26/2016
Forecast
for
8/27/2016
Injection
PG&E Storage
Core and Market Center
1018615111
Wild Goose Storage402000
Central Valley Storage10101010
Lodi Storage69000
Gill Ranch Storage4444
Pipeline Balancing Injection0000
Withdrawal
PG&E Storage
Core and Market Center
184139139139
Wild Goose Storage279484848
Central Valley Storage6666
Lodi Storage0000
Gill Ranch Storage4444
Pipeline Balancing Withdrawal7575250

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

Actual
for
8/21/2016
Actual
for
8/22/2016
Actual
for
8/23/2016
COMPOSITE TEMPERATURE
Historical Average for current day: 70
6867.667.8
Demand
On-System Demand175820331987
Off-System Deliveries
SoCal Gas (KRS)270305160
Southwest Gas222
Kern River GT - HDL535252
Transmission Shrinkage282725
Injection
PG&E Storage
Core, Market Center, and Pipeline Balancing
58565
Wild Goose Storage000
Central Valley Storage18181
Lodi Storage0087
Gill Ranch Storage5400
TOTAL SYSTEM DEMAND224124942318
Supply
Interconnect Supply
Gas Transmission Northwest125612421552
Ruby660659145
California Production323335
SoCal Gas (KRS)000
Kern River GT - HDL000
Kern River GT - Daggett16164
Southern Trails3800
El Paso Natural Gas233221300
Transwestern1369450
Withdrawal
PG&E Storage
Core, Market Center, and Pipeline Balancing
050119
Wild Goose Storage58460
Central Valley Storage000
Lodi Storage0340
Gill Ranch Storage000
TOTAL SYSTEM SUPPLY237624342266
INVENTORY CHANGE
(Supply - Demand)
135-60-52
TOTAL CUSTOMER IMBALANCE2254-109

*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
8/21/2016
Actual
for
8/22/2016
Actual
for
8/23/2016
Injection
PG&E Storage
Core and Market Center
18110980
Wild Goose Storage319286317
Central Valley Storage232317
Lodi Storage1414112
Gill Ranch Storage444
Pipeline Balancing Injection68710
Withdrawal
PG&E Storage
Core and Market Center
135174183
Wild Goose Storage342357368
Central Valley Storage666
Lodi Storage144824
Gill Ranch Storage334
Pipeline Balancing Withdrawal0011
Balancing Gas
Imbalance Gas in Storage**370237323615
PG&E Total Gas in Storage934019351593495

*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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