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SRP Summer Preparedness 2007

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SRP
Summer Preparedness
2007
Mike Hummel
Manager – Supply & Trading
and
Gary Harper
Manager - System Operations
ACC Summer Preparedness Hearing
March 22, 2007
03/22/07 ACC Open Meeting
Summer Preparedness 2007
1
SRP Electric Service Territory
Peoria
Scottsdale
Surprise
Phoenix
Paradise
Valley
Litchfield
Park
Fountain
Hills
Eastern Mining Area
Glendale
Tolleson
Mesa
Apache
Junction
Tempe
Gilbert
Avondale
Chandler
Goodyear
03/22/07 ACC Open Meeting
Queen
Creek
Summer Preparedness 2007
2
Summary
• Peak demand is expected to be higher
than last year due to continued growth.
• Adequate resources have been secured
to meet the anticipated demand.
• The risk of potential wildfires is a
continuing concern.
03/22/07 ACC Open Meeting
Summer Preparedness 2007
3
Peak Load Forecast
6627 MW
6590 MW
2006 Actual
03/22/07 ACC Open Meeting
2007 Forecast
Summer Preparedness 2007
4
Summer 2006 Retail System Peak
�Needle Peak’
• Summer 2006 new peak – 6590 MW
• Exceeded Base Forecast of 6210 MW by 380 MW
– 16 hours
• Exceeded High Risk Forecast of 6448 MW by 150 MW
(1:10 occurrence)
– 3 hours
• 118 degree Peak Temperature (1:10 occurrence)
03/22/07 ACC Open Meeting
Summer Preparedness 2007
5
Summer 2007 Outlook
912 MW
6627 MW
Expected
Need
Expected
Capability
Reserves
Purchased
Power
1849 MW
SRP
Forecast
Peak Load
SRP
5690 MW
Generation
Total 7539 MW Total 7539 MW
03/22/07 ACC Open Meeting
Summer Preparedness 2007
6
Reserves
• Respond to load extremes above base
forecast.
• Provide an immediate response to forced
outages.
• Quantity is based on NERC and WECC
operating criteria and contractual
arrangements.
• A portfolio of resources is utilized to meet the
reserve requirements.
– Balances “reliability” and “low cost” objectives.
03/22/07 ACC Open Meeting
Summer Preparedness 2007
7
SRP Owned Generation – 2007
Total Capacity: 5690 MW
Hydro & Renewables
276 MW
Gas
2951 MW
Coal
1791 MW
Nuclear
672 MW
03/22/07 ACC Open Meeting
Summer Preparedness 2007
8
Purchased Power
• Purchased power portfolio is in place to
meet demand.
• Additional purchases may be needed to
respond to forced unit outages.
• Regional market conditions suggest that
there will be sufficient capacity to meet the
Arizona demand.
03/22/07 ACC Open Meeting
Summer Preparedness 2007
9
Fuel Status
• Nuclear – Full requirements under contract
• Coal
– Plants expected to be at or above target
inventories by summer season
– Full requirements under contract
• Natural Gas
– Full transportation requirements under contract
– In process of securing retail commodity
requirements
– Distillate fuel back-up
03/22/07 ACC Open Meeting
Summer Preparedness 2007
10
Generation Maintenance
Completed By Summer 2007
Units
Agua Fria
Craig
Desert Basin
Hayden
Horse Mesa
Kyrene
Mormon Flat
Navajo
Palo Verde
Roosevelt
Santan
Stewart Mountain
03/22/07 ACC Open Meeting
1,2,3,4,5,6
2
1,2
2
1,2,4
7
1,2
2
1,2,3
1
1,2,3,4,5
1
Summer Preparedness 2007
11
System Additions
Stations
NEW
NUMBER
- Distribution Substations
5
- 28MVA 69/12kV Transformers
9
- 230kV Breakers
12
- 69kV Breakers
43
- 69kV Capacitors
48 MVAR
-230/69kV Transformers
2
-500/230kV Transformers
1
03/22/07 ACC Open Meeting
Summer Preparedness 2007
12
System Additions
Lines
ADDITIONS
NUMBER
- Pole Replacements
620
- Rebuilt/Upgrade 69kV Lines
6.1 Miles
- New Circuit Miles of 69kV Line
20.6 Miles
- Rebuilt/Upgrade 230kV Lines
17.5 Miles
- New Circuit Miles of 230kV Line
03/22/07 ACC Open Meeting
Summer Preparedness 2007
9 Miles
13
System Preparation
Transmission and substation maintenance
and training will be complete by summer.
This includes:
– Line patrols/inspections
– Preventative maintenance
– Pole re-enforcement
– Pole change-outs/
upgrades
– Wildfire coordination
03/22/07 ACC Open Meeting
Summer Preparedness 2007
– Tree trimming
– Cable replacement
– Storm planning
– Emergency
procedure training
– Blackstart training
14
SRP/Wildland Fire Coordination
•
•
•
•
•
Facilities identification and location
Direct communication between SRP and
Agencies
SRP Advisor Representative on-site
Firefighting safety information
Participate in State Drill and Southwest
Mutual Assistance Committee
03/22/07 ACC Open Meeting
Summer Preparedness 2007
15
SRP Electric Facility Firefighting
• Support development of Pre-Plan
Information for each facility.
• Provide Emergency Contact Information for
each facility and responding firefighters.
• Integrate SRP representatives into Incident
Command System management.
• Provide firefighter electrical safety
awareness and facility orientation training.
03/22/07 ACC Open Meeting
Summer Preparedness 2007
16
Arizona EHV Transmission Systems
Craig
Hayden
TO
UTAH
NEVADA
COLORADO
TO
UTAH
UTAH
Navajo
Shiprock
Four Corners
Glen Canyon
TO
NEVADA
Marketplace
Mc Cullough
El Dorado
Moenkopi
Electrical Substations
Coal Generation
Mohave
Davis
Hydro Generation
Cholla
Coronado
Springerville
Parker
Westwing
To
Devers
To
Miguel
San Juan
TO
NEW
MEXICO
Mead
TO
CALIFORNIA
CALIFORNIA
TO COLORADO
Pinnacle
Peak
Rudd
Palo
Silver King
Kyrene Browning
Verde
Hassayampa Jojoba
TO
Phil Young
PHOENIX AREA
(Greenlee)
North Gila
Saguaro
New Gas Generation
TO
NEW
MEXICO
Liberty
TO TUCSON
AREA
TO
NEW
MEXICO
South Vail
MEXICO
03/22/07 ACC Open Meeting
North
ARIZONA
Summer Preparedness 2007
NEW MEXICO
17
Distribution
• Summer operating procedures reviewed
and refresher training provided to O&M
personnel.
• Six mobile substation transformers are
available for service if needed.
• If required, the process for implementing
rotating outages has been automated.
– The planned sequence of substation outages
and the duration of each outage is the same as
in the past.
03/22/07 ACC Open Meeting
Summer Preparedness 2007
18
Summary of Year 2007
Projected Conditions
• Transmission, SRP generation and planned
energy purchases are adequate to serve
the forecasted year 2007 demand.
• Wildfires are our biggest concern.
• Contingency plans are in place to handle
emergency events.
03/22/07 ACC Open Meeting
Summer Preparedness 2007
19
03/22/07 ACC Open Meeting
Summer Preparedness 2007
20
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