UNSPSC 15121505: Transformer oil or insulating oil

A highly refined mineral oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil filled transformers, some types of high voltage capacitors, fluorescent lamp ballasts, and some types of high voltage switches and circuit breakers. Its functions are to insulate, suppress corona and arcing, and to serve as a coolant.

UNSPSC 15121505 Transformer oil or insulating oil, a Commodity code, covers the purchase of specialized dielectric fluids for electrical equipment, primarily Type II transformer oil for substations and insulating oil testing services for oil-filled electrical infrastructure. Recent state and local solicitations show demand focused on bulk oil procurement for substation use and related laboratory testing and analysis services to monitor oil condition and equipment performance. Issuing bodies span state agencies, county school districts, and municipal utilities—the State of Florida, Cobb County School District in Georgia, Hillsborough County Public Schools in Florida, and Lubbock Power & Light in Texas have all posted opportunities under or adjacent to this code within the past four months. While the code nominal scope is narrow, purchasing agencies are buying transformer oil as part of broader electrical utility supply chains, including delivery logistics, testing protocols, and equipment-specific application requirements.

Recent opportunities reveal a geographic spread across Florida, Georgia, and Texas. The State of Florida posted RFQ 18028CV on October 19, 2026, seeking Type II transformer oil in 55-gallon drums for substations (due May 9, 2018 per the posting, though the date appears inconsistent with the October 2026 post date). Lubbock Power & Light issued two related RFPs in June 2026: RFP 7133-26-ELD for a 50 MVA transformer with full turnkey oil delivery and processing services (proposals due August 5, 2026, with delivery required by April 3, 2028 and estimated contract value structured on milestone-based payments), and RFP 7131-26-ELD for annual insulating oil testing laboratory services across approximately 20 substations (proposals due July 22, 2026, with ISO/IEC 17025 accreditation and utility experience required). Hillsborough County Public Schools procured ultralow sulfur diesel fuel under ITB 26205-ITB-DST with a Notice of Intent to Award issued July 13, 2026, naming Colonial Oil Industries as the incumbent and identifying multiple awardees, though this is fuel rather than transformer oil. The code shows modest but consistent activity among utilities and large public agencies managing electrical infrastructure.