Bannock Pumping Plant Transformer for Fort Hall Ir

The Bureau of Indian Affairs is seeking to procure one 12.47-480/277V Distribution Transformer rated at 2.5 MVA for the Bannock Pumping Plant at the Fort Hall Indian Irrigation Project. The transformer must be a three-phase, oil-cooled unit with copper windings, featuring a high voltage delta-connected winding at 12,470 volts and a low voltage grounded wye-connected winding at 480Y/277 volts. Key technical requirements include a 55°C temperature rise, de-energized tap changer with 2.5% taps, sealed tank construction, and compliance with ANSI, IEEE, and NEMA standards. The contractor must design, construct, test, and deliver the transformer F.O.B. to the jobsite with guarantees for workmanship, materials, and continuous satisfactory performance. The solicitation was posted on June 18, 2025, with proposals due by July 18, 2025, and the desired delivery date is September 1, 2027.

This procurement is designated as a 100% small business set-aside under NAICS code 335311 (Power, Distribution, and Specialty Transformer Manufacturing) with a size standard of 800 employees. No incumbent contractor or current service provider is identified in the solicitation documents. While specific contract values are not disclosed, this is structured as a firm-fixed-price purchase order for the single transformer unit and associated accessories. The transformer will be delivered to the Bannock Pump Station located approximately 11 miles southwest of Pocatello, Idaho, on the Fort Hall Reservation, with the specific installation site adjacent to 1300 Schiller Road in Pocatello. The equipment is designed for outdoor continuous duty at an altitude of 4,446 feet with ambient temperatures ranging from 0°C to 50°C.