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Lutz CSG CSG: Decommissioning Plan 1.0 Introduction 2.0 Summary Statement of Expected Decommissioning Cost 3.0 Basis of Plan Narrative 3.1 General • • • • • Page 1 #REF! The following is a list of assumptions and clarifications to further define the methodology used to establish the scope and values of the removal costs and salvage values. The purpose of this report is to describe the decommissioning process for the Lutz CSG solar photovoltaic generation facility (“the project”) located at 7776 N 157th ST N, Hugo, MN 55038. The project consists of 2496 solar modules mounted to a driven pile, single axis tracker system. Both direct current (DC) and alternating current (AC) conductors will be trenched in conduit. After final circuit consolidation at the PV system pad mounted switchboard, the system’s voltage will be stepped-up to distribution level at the Xcel owned transformer and interconnected, onto an existing utility distribution circuit. The project converted approximately 5 acres of agricultural land into a power generation facility. Construction included elevated solar modules mounted on driven steel piles, concrete inverter/transformer pads, and gravel access roads. The intent of the decommissioning work will be to fully remove the solar facility, dispose of any components, and restore the site to a permanently stabilized grassed field. The service life of the facility is assumed to be 35 years. All dollar amounts are in net- present-value. It is assumed that all values will inflate/deflate at consistent with baseline inflation, therefore, the net-present-value comparison of removal cost to salvage value will remain relevant at the end of the service life. Costs associated with this plan represent a “turn key” operation for a general contractor to be hired for this work, including permits, mobilization, contingency, etc. Haul costs assume a maximum distance of 60 miles between the project and nearest disposal or recycling facility. No maximum duration has been assigned for this work. It has been assumed that this work would be handled by a single crew without full time site personnel. February 23, 2024