North Mankato Load Serving study Xcel Energy Great

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North Mankato Load Serving study Xcel Energy Great River Energy

North Mankato Load Serving study Xcel Energy Great River Energy

Study Area:

Study Area:

System Characteristics • Major loads include Cities of Lesure and St. Peter • Only

System Characteristics • Major loads include Cities of Lesure and St. Peter • Only two strong sources from Wilmarth. • Long 69 k. V lines.

Critical contingencies (2012): Contingency Wilmarth – Penelope Branch Overload Cleveland – Jamestown tap Overloa

Critical contingencies (2012): Contingency Wilmarth – Penelope Branch Overload Cleveland – Jamestown tap Overloa Bus Voltag d Eagle Lake e 145 % 91. 5 % Cleveland – St. Thomas Wilmarth – Eagle Wilmarth –Traverse Lake 109 % Cleveland – 88 % St. Thomas Traverse – St. Peter 130 % St. Peter – 86. 5 % Cleveland – St. Thomas Jamestown – Cleveland

Critical contingencies continued: Contingency Le Sueur – Le Sueur Tap Branch Overload Cleveland –

Critical contingencies continued: Contingency Le Sueur – Le Sueur Tap Branch Overload Cleveland – Le Center Loss of Cleveland – Le Center Traverse – New Sweden Overloa Bus Voltag d Le Sueur – e 102 % Montgomer 88. 6 % y 104 % Le Center – 90. 8 % St. Thomas

Preferred Plan: • Preferred Plan is option 2. • Relatively inexpensive. • Scope for

Preferred Plan: • Preferred Plan is option 2. • Relatively inexpensive. • Scope for future 115 k. V line additions from Helena substation.

Other Concerns: • SPS to trip the Helena – St. Thomas line for the

Other Concerns: • SPS to trip the Helena – St. Thomas line for the loss of Helena – Wilmarth or Helena – Blue Lake 345 k. V lines. • The inservice date for this project depends on the inservice date of Helena 345 k. V substation. The project schedules has to be coordinated with the Southwest Minnesota – Twin cities 345 k. V line.

Questions?

Questions?