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START bus capital plan raises hybrid vs. diesel cost questions; staff to seek BUILD/FTA clarifications
Summary
START presented an updated capital plan that increased the Gillig hybrid bus cost and proposed converting four diesel bus purchases to hybrids. Staff warned the BUILD grant caps may affect federal match; they will seek FTA and YDOT clarification before the jurisdictions finalize funding.
START staff updated the joint meeting on FY26 capital requests for the transit fleet, highlighting a rise in the estimated cost for a Gillig hybrid bus and a proposal to convert four planned diesel bus purchases to hybrid models.
Staff said the federal BUILD grant that covers part of the purchase imposes a maximum federal contribution for certain vehicle types, so the local match and grant structure change if the vehicle type differs from the original grant application. The change from diesel to hybrid for four vehicles would increase per-bus capital cost in the START presentation from about $800,000 per bus (diesel) to roughly $1.1 million per bus (hybrid), a difference staff estimated at $300,000 per bus. That conversion would increase the overall project cost and alter the federal/local split; staff noted an 85/15 federal/local ratio under the BUILD allocation in the current calculation but said they would have to seek grant amendments.
Commissioners asked whether reverting the BUILD-funded vehicles back to diesel would reduce local matching obligations. Staff said they would seek clarifications from the FTA Denver office and YDOT about allowed vehicle types under the BUILD grant, the grant cap per vehicle, and whether an amendment could be approved in time for procurement. Several commissioners said they wanted the staff analysis on cash-flow, grant amendment feasibility and lifecycle operating cost comparisons (including fuel and maintenance) before making a final decision.
Commissioner Gardner noted that hybrid vehicles can reduce operating costs over the life of a bus but carry higher upfront capital costs, and he asked staff to model lifecycle cost-savings. Staff said they will engage the BUILD grant manager and the FTA regional office and return with options showing the net local cost differences and timing impacts for procurement and grant amendments.
The joint boards did not finalize the capital purchases at the meeting; staff will return to the boards with detailed cash-flow projections and grant-amendment options prior to the June final budget decisions.
