Potential Transmission Construction Scheduling In Southern Minnesota--- Fall 2004- Spring 2006

1
Potential Transmission Construction Scheduling In
Southern Minnesota--- Fall 2004- Spring 2006

• Xcel Energy has posted Significant Transmission
  construction during this time frame associated
  with its Wind Development in Southern Minnesota
• There are a number of Large Generators in the
  counties generally south of the Twin Cities
  identified as still active in the MISO queue with
  requested in service dates within or near this
  same time frame

2
Transmission Construction Scheduling In Southern
Minnesota Fall 2004- Spring 2006

• Of these generators, the following have completed
  the facility study phase.
• 37305-01 300 MW Rice Co
• 37540-02 667 MW Blue Earth Co
• 37911-01 385 MW Scott Co
• Using the interconnection and facility study
  results of just these generators, the following
  map shows the location of the transmission
  construction projects of the wind 825 Mw projects
  and these generator interconnections should they
  continue.

3
Southern Minnesota Potential Transmission
Work Fall 2004-Spring 2006
Transmission work Fall 04- Spring 2006
To Fergus Falls
Require outages during construction
Little Falls
Grant Co.
To Riverton
Douglas Co.
Note we expect some additional work to come from
delivery studies based on interconnection study
results
Morris
Benton Co.
Rush City
To Granite Falls
St Cloud
Chisago Co.
Glenwood
Panther
Sherco
Benson
Monticello
A.S. King
Willmar
Parkers Lake
To Morris
to Eau Claire
Blue Lake
Red Rock
Granite Falls / Minnesota Valley
Prairie Island
Franklin
Buffalo Ridge
Marshall
Wilmarth
Lake Yankton
W.Faribault
Winona
Pipestone
Byron
Chanarambie
West Owatonna
To Rochester
Lakefield Jct.
Adams
Split Rock
To Austin
To Raun
To Hazleton
J/DSPPLAN/schd67/outminn.ppt
4
37305-01 300 MW Rice Co.

• Based on the Facility study for this
  interconnection, this generation plant is located
  just north of Faribault MN and will require the
  following major transmission work
• Replace W. Faribault 115-69 kV Transformers
• Rebuild Fair Park- Northfield 69 kV line
• New Faribault Energy Park 115 kV substation
• Rebuild Lake Marion-W. Faribault 115 kV line
• Construction duration 23 Months
• Interconnection study strongly suggests
  additional transmission will be needed by this
  project for delivery.

5
37540-02 667 MW Blue Earth Co.

• Based on the Facility study for this
  interconnection, this generation plant is located
  Xcel Energys Wilmarth Substation and will
  require the following major transmission work
• Major rebuild 69, 115 and 345 kV substation
• Requires completion of Eastwood 115 kV conversion
  project.
• Construction duration 21 Months
• Interconnection study strongly suggests
  additional transmission will be needed by this
  project for delivery.

6
37540-02 667 MW Scott Co.

• Based on the Facility study for this
  interconnection, this generation plant is located
  Xcel Energys Blue Lake Substation and will
  require the following major transmission work
• Major Blue Lake 115 kV substation expansion
• Move Black Dog 230-115 kV transformer to Blue
  Lake
• gt1 mile 230 kV double circuit
• Re-conductor Blue Lake-Black Dog Line
• Construction Duration
• First learned about in October 2003
• Will just make May 2005 in-service
• Generator entered Facilities Construction
  Agreement to allow pre- IA Engineering and
  procurement.

7
Additional Large Generator Interconnection
requests in MISOs queue

• 37551-02 105 MW Martin Co 2004
• 37804-01 200 MW Dakota Co 2007
• 37830-01 180 MW Carver Co 2005
• 37967-01 100 MW Martin Co 2006
• 38034-01 350 MW Goodhue Co 2006