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Sources Sought Announcement Crow Creek Substation Transformer Replacement, Canyon Ferry Unit, Pick-Sloan Missouri Basin Program, Montana THIS NOTICE IS NOT A REQUEST FOR PROPOSAL General Information Contract Opportunity Type: Sources Sought (Original) All Dates/Times are: (UTC-06:00) MOUNTAIN DAYLIGHT TIME, DENVER, USA Classification Responses Due: 4/27/2026, 3:00 PM MDT Product Service Code (PSC): Z2NZ, Repair or Alteration of Other Utilities North American Industry Classification System (NAICS) Code: 237130, Power and Communication Line and Related Structures Construction Description This is a Sources Sought announcement for Crow Creek Substation Transformer Replacement, Pick-Sloan Missouri Basin Program, Montana. This announcement is being used for market research and advanced planning purposes. Proposals are not requested and will not be accepted from this Sources Sought Notice. THIS IS NOT A SOLICITATION FOR PROPOSALS AND A CONTRACT WILL NOT BE AWARDED AS A RESULT OF THIS NOTICE. Work is located at Crow Creek Substation, located in the vicinity of Toston, Montana, off local irrigation district maintenance roads, south of US 287, in Broadwater County, approximately at Latitude: 46° 07'14.79" N, Longitude: 111°26'51.83"W. The substation provides service to Crow Creek Pumping Plant, located on the Missouri River, less than a mile from the substation. The pumping plant operates on a seasonal basis, however the substation is energized year-round providing station-service power to the plant in the off season. Seasonal operation is typically from May to October. The principal components of work that will be completed under this project include the following: 1) Manufacturing and factory testing one (1) step-down transformer. 2) Delivery to and placement of the transformer on existing foundation. 3) Erection of appurtenant equipment including bushings, arrestors, radiators, and filling of insulating oil. 4) Field testing, commissioning, and startup services. The requirement is to furnish and field test one (1) 2,500 kVA, 65-degree C rise, three-phase, fluid-filled, outdoor, step-down transformer. Low side to be connected in grounded wye and high side connected delta. Type & Class: Three-phase, sealed tan, outdoor, Class II step-down transformer: KY1A Capacity and Temp Rise: 2500 kVA, KNAN, 65 Degrees Celsius winding and liquid temperature rise Frequency: 60 Hertz High Side: 102 kV with 550kV BIL Low Side: 4.16 kV with 110kV BIL Impedance: 8.7% on a 2500 kVA base Tank Type: Sealed Winding: Copper Insulating Fluid: FR3 De-Energized High Tap Changer: +/- 5%, +/-10% Elevation: 4305 feet above sea level (1312 meters) Seismic Level: Moderate Delivery, placement, erection, and startup will occur over a single outage period after the existing transformer has been removed. Erection will include the placement and connection of bushings, arrestors, radiators, and anchoring. Outage will occur between October through April due to seasonal operation of the pumpin…

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