Notice of Xcel Energy Filing Permit Appl

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t • remove three existing transmission structures (Structures 076, 077, and 078) and associated 1,030 feet of single circuit 115 kV transmission Line 0831 and installing two new structures and approximately 1,095 feet of single circuit 115 kV transmission line to re-route the existing line off of residential property and onto adjacent Huntington Farm Association ("HFA")1 property adjacent to the BNSF railroad; • disconnect the existing Line 0831 at transmission Structure 077, install a new double circuit corner structure, and connect the new double circuit 115 kV transmission line from the new Orono Substation to Line 0831; • installing fiber optic ground wire with the new 115 kV transmission line and the replaced segment of Line 0831; • except for existing switchgear (which will be reused in the new substation), remove the existing Orono Substation and construct the replacement Orono Substation as a 115- 13.8 kV transmission substation to accommodate the new 115 kV line termination and/or ring bus by, installing a 28 MVA, 118-14.3 kV transformer, adding transfer trip and pilot relaying, installing fiber optic lines for relaying and transfer trip, installing breakers, reconfiguring line protection, replacing shield wire with fiber optic shield wire, and related modifications;and • revise as needed line designations, terminals, breakers, relays, and line protection as a result of the above changes in connecting the new Orono Substation to 115 kV transmission Line 0831. While not part of the requested Route Permit for this Project, the following work will also be completed: • disconnect approximately 385 feet of existing Great River Energy (GRE) 69 kV transmission line (BD) from the existing Orono Substation and re-route approximately 420 feet of this line around the proposed new Orono Substation and associated new 115 kV transmission line facilities (the re-routed GRE 69 kV transmission line would not be connected to the new Orono Substation). The existing Orono Substation has been in service since 1990 and is situated on land owned in fee by Xcel Energy. All proposed substation upgrade components will be located within existing Xcel Energy property. Xcel Energy also proposes to build a new double circuit 115 kV transmission line to connect the Orono Substation to the existing 115 kV Line 0831 located approximately 1/a mile northwest of the Orono Substation. The proposed transmission structures are single-pole, galvanized steel or weathering-steel type structures. The height of the new single circuit poles will range from 70 to 90 feet while the double circuit poles will range from 75 to 115 feet, with the spans between poles ranging from 300 to 500 feet. 1 HFA is an association of landowners which are a part of the Huntington Farm residential development that is located west of the existing Orono Substation site. HFA owns undeveloped parcels surrounding the residential parcels that are part of HFA. 2