OFO/EFO Outlook System Inventory Status System Inventory Summary Supply and Demand Forecast Storage Activity Forecast Recent Supply and Demand Data Recent Storage Activity

Daily Demand by Customer Class Physical Pipeline Capacity Supply and Demand Archive Pipeline Maintenance News OFO/EFO Archive Storage Activity Archive OFO Overview Scheduled Volumes by Path

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OFO/EFO Outlook

Last Updated Saturday, February 11, 2012 at 7:15am

Gas Day	Activity	Tolerance	Stage/Noncompliance Charge	Reason
02/09/2012	No OFO in Effect
02/10/2012	No OFO in Effect
02/11/2012	No OFO in Effect
02/12/2012	No 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 4, posted 10:11 PM PT

Last updated for the Gas Day of 02/11/2012
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

	Ending Inventory History			Ending Inventory Forecasts
MMcf	2/8/2012	2/9/2012	2/10/2012	2/11/2012	2/12/2012	2/13/2012	2/14/2012
4750
4700
4650
4600
4550
4500
4450
4400
4350
4300		4311		4334	4323
4250			4293
4200	4248
4150
4100						4126
4050
4000
3950
3900							3930
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 2/11/2012	Forecast for 2/12/2012	Forecast for 2/13/2012	Forecast for 2/14/2012
Beginning Inventory	4293	4334	4323	4126
Ending Inventory	4334	4323	4126	3930
Inventory Change	41	-11	-197	-196
Upper Limit	4450	4450	4450	4450
Difference* (Upper Limit - Ending Inventory)	116	127	324	520
Lower Limit	4000	4000	4000	4000
Difference* (Ending Inventory - Lower Limit)	334	323	126	-70

*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 8:30 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 4, posted 10:11 PM PT

Last updated for the Gas Day of 02/11/2012
Next update expected by 5:30 AM PT
(The Gas Day runs from 7:00 AM to 7:00 AM)

	Forecast for 2/11/2012	Forecast for 2/12/2012	Forecast for 2/13/2012	Forecast for 2/14/2012
COMPOSITE TEMPERATURE Historical Average for current day: 51.2	51.6	51.4	47.9	46.6
Demand
On-System Demand	2335	2375	2835	2845
Off-System Deliveries
SoCal Gas (KRS)	300	300	300	300
Southwest Gas	8	10	10	10
Kern River GT - HDL	104	74	74	74
Transmission Shrinkage	30	30	30	30
Injection
PG&E Storage (175 Maximum)* Core, Market Center, and Pipeline Balancing	167	176	0	0
Wild Goose Storage	38	38	38	38
Central Valley Storage	19	19	19	19
Lodi Storage	0	0	0	0
Gill Ranch Storage	0	0	0	0
TOTAL SYSTEM DEMAND	3000	3021	3305	3315
Supply
Interconnect Supply
Gas Transmission Northwest	980	980	980	980
Ruby	968	938	938	938
California Production	110	110	110	110
SoCal Gas (KRS)	0	0	0	0
Kern River GT - HDL	0	0	0	0
Kern River GT - Daggett	318	327	327	327
Southern Trails	39	39	39	39
El Paso Natural Gas	215	205	205	205
Transwestern	276	276	276	276
Withdrawal
PG&E Storage (1644 Maximum)* Core, Market Center, and Pipeline Balancing	0	0	98	108
Wild Goose Storage	0	0	0	0
Central Valley Storage	0	0	0	0
Lodi Storage	133	133	133	133
Gill Ranch Storage	2	2	2	2
TOTAL SYSTEM SUPPLY	3041	3010	3108	3118
INVENTORY CHANGE (Supply - Demand)	41	-11	-197	-196
TOTAL CUSTOMER IMBALANCE	91	51	-133	-133

*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 2/11/2012	Forecast for 2/12/2012	Forecast for 2/13/2012	Forecast for 2/14/2012
Injection
PG&E Storage Core and Market Center	357	367	367	367
Wild Goose Storage	222	222	222	222
Central Valley Storage	19	19	19	19
Lodi Storage	296	296	296	296
Gill Ranch Storage	18	18	18	18
Pipeline Balancing Injection	75	75	75	75
Withdrawal
PG&E Storage Core and Market Center	266	267	540	550
Wild Goose Storage	184	184	184	184
Central Valley Storage	0	0	0	0
Lodi Storage	429	429	429	429
Gill Ranch Storage	20	20	20	20
Pipeline Balancing Withdrawal	0	0	0	0

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

	Actual for 2/8/2012	Actual for 2/9/2012	Actual for 2/10/2012*
COMPOSITE TEMPERATURE Historical Average for current day: 51.2	53.2	55	55.5
System Demand
On-System Demand	2507	2371	2334
Off-System Deliveries
SoCal Gas (KRS)	143	123	302
Southwest Gas	9	6	8
Kern River GT - HDL	99	97	100
Transmission Shrinkage	28	28	30
Injection
PG&E Storage Core, Market Center, and Pipeline Balancing	47	168	126
Wild Goose Storage	0	0	0
Central Valley Storage	19	19	19
Lodi Storage	0	0	77
Gill Ranch Storage	0	0	0
TOTAL SYSTEM DEMAND	2851	2813	2995
Supply
Interconnect Supply
Gas Transmission Northwest	969	1011	1089
Ruby	1015	913	882
California Production	107	106	109
SoCal Gas	0	0	0
Kern River GT - HDL	0	0	0
Kern River GT - Daggett	64	160	260
Southern Trails	80	40	40
El Paso Natural Gas	203	209	288
Transwestern	71	128	264
Withdrawal
PG&E Storage Core, Market Center, and Pipeline Balancing	60	49	2
Wild Goose Storage	140	55	40
Central Valley	0	0	0
Lodi Storage	267	204	0
Gill Ranch Storage	0	0	3
TOTAL SYSTEM SUPPLY	2975	2876	2977
INVENTORY CHANGE (Supply - Demand)	124	63	-18
TOTAL CUSTOMER IMBALANCE	204	124	40

*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 2/8/2012	Actual for 2/9/2012	Actual for 2/10/2012*
Injection
PG&E Storage Core and Market Center	344	350	339
Wild Goose Storage	125	145	164
Central Valley Storage	19	19	19
Lodi Storage	309	368	524
Gill Ranch Storage	18	18	14
Pipeline Balancing Injection	82	64	69
Withdrawal
PG&E Storage Core and Market Center	439	295	284
Wild Goose Storage	267	198	197
Central Valley Storage	0	0	0
Lodi Storage	566	568	465
Gill Ranch Storage	20	20	20
Pipeline Balancing Withdrawal	0	0	0
Balancing Gas
Imbalance Gas in Storage**	3422	3485	3497

*Until yesterday's final figures are released, all numbers 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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