Transformer Reconditioning and Rebuild

The City of Naperville is requesting bids on transformer reconditioning and rebuild services under IFB, with bids due August 4, 2026 at 2:00 p.m. and virtual bid opening the same day. The scope covers inspection, reconditioning, or rebuilding of single-phase transformers (pole mount and pad mount) and three-phase pad mount transformers, with all work subject to the Illinois Prevailing Wage Act.

Pricing must be submitted on a unit-price basis for inspection, reconditioning, rebuild, and scrap services by transformer size and type, with all freight, material costs, and miscellaneous expenses included unless specifically excepted. Oil is bid separately at a price per gallon with a markup provision for cost increases during the contract term. Compensation is based on actual units repaired, rebuilt, or retired; estimated quantities on the bid form are for evaluation only.

All transformers must meet current ANSI, ASTM, IEEE, and NEMA standards and include manufacturer warranties of one to three years depending on service type. Successful bidders must provide certificates of insurance, performance and labor and material bonds equal to 100 percent of the total contract price, and complete a contractor safety orientation checklist before work begins.

The contract term runs from the date of award through August 31, 2027, with consideration for two additional one-year renewal options contingent on City Council funding approval and vendor performance. Bidders must submit responses electronically through the City's OpenGov portal and include an affidavit of compliance, responsible bidder ordinance form, bid worksheet with unit pricing, 10 percent bid deposit, three commercial references, and subcontractor bid forms if applicable. The City reserves the right to reject any bids, award to multiple vendors, increase or decrease quantities, and terminate the contract with thirty days' written notice. The question submission deadline was July 23, 2026.