NIGP 28584: Transformers, Transmission Line Type

NIGP 28584 Transformers, Transmission Line Type is an Item code that encompasses the procurement of power transformers, distribution transformers, and high-voltage testing equipment by state and local utilities, municipalities, and special-purpose districts. Recent solicitations reveal a portfolio ranging from specialized testing modules and regulator units to full-service design-manufacture-delivery-installation contracts for substation-class power transformers rated at tens of megavolt-amperes with complex loss-evaluation models and warranty provisions. State and local governments buying under this code include municipal electric utilities (Keys Energy Services in Key West; Kissimmee Utility Authority; Ocala Utility Services; City of Leesburg; City of College Park Power Department), city and county infrastructure departments (City of Palo Alto; Portage County, Wisconsin), school districts (Northside Independent School District in Texas), and cooperative purchasing vehicles such as Sourcewell. Scope spans single units (one high-voltage testing module, one 67–13,090 kV three-phase power transformer) to inventory stocks of distribution regulators and pole-mounted transformers in multiple kVA configurations. Mandatory sourcing requirements appear frequently—continental U.S. manufacturing, ISO 9001 and ISO 45001 certifications, and demonstrated experience with similar municipal utility projects within the past five to ten years.

Recent activity concentrates in Florida, with Kissimmee Utility Authority, City of Leesburg, Keys Energy Services, and City of Ocala posting solicitations between late September and May 2026. The City of Palo Alto (California) pre-qualified vendors for six 20/26/34 MVA substation transformers in late September 2026; Portage County, Wisconsin, and the City of College Park, Georgia, solicited electrical and power-distribution packages in summer 2026. Representative recent opportunities include the City of Leesburg's RFP for one 67–13,090 kV three-phase transformer with proposals due August 19, 2026 at 11:00 a.m., featuring a twenty-year cost-of-ownership model tied to no-load and load losses with liquidated damages provisions; Kissimmee Utility Authority's IFB 26046JG for one OMICRON CP TD12 precision high-voltage test module with bids due September 22, 2026 at 2:00 p.m. EST and anticipated contract value less than $250,000; and City of Ocala's ITB ELE/260171 for six 250 kVA distribution regulators with bids due November 21, 2026 at 2:00 p.m., restricted to Original Equipment Utility manufacturers. Keys Energy Services (Key West) requested sealed proposals for distribution transformers in multiple configurations due October 16, 2026 at 10:00 a.m., evaluated using a Total Owning Cost formula incorporating no-load and load losses.