Springfield explores propane buses as near-term greener option; depot infrastructure study planned

The Springfield Township SD Property Committee discussed alternative fuels for its bus fleet, with district transportation staff saying propane appears to be the most feasible near-term alternative to diesel while electric buses remain limited by charging infrastructure.

Nate Bray said a number of regional districts have adopted propane fleets and have not returned to diesel. He listed operational advantages—quieter cabins, reliable cold starts and fewer complex emissions-related components—and noted lower long-term ownership costs are possible because some expensive diesel components (for example, turbochargers) are not needed on propane engines.

Bray said large Type D buses suitable for Springfield may have factory-available propane engines by model year 2027, and that vendors and conversion firms are preparing product lines. He cautioned the main barrier is on-site fueling infrastructure: a propane fueling tank sized to serve the fleet requires planning and space and must be part of a longer-term depot plan so the district does not purchase a limited number of propane buses and then lack capacity to expand.

Miss Green said the district has commissioned CMTA to study the transportation center this summer to evaluate options for accommodating alternative fuels and related infrastructure. She added the district’s diesel fuel pricing is locked through June 2026 by its IU contract extension, so procurement and replacement timing will be coordinated to avoid unnecessary diesel purchases if a switch is planned.

Committee members asked about short-term conversions and the district’s stance was not to retrofit existing buses due to chassis life and cost; Bray said conversions he referenced generally involve factory-authorized propane-capable engines rather than aftermarket work on aged chassis. Administration said any short-term smaller-start approach would still require a long-term plan for tank sizing and growth.

Next steps: CMTA study results are expected this summer; administration will use that analysis to plan depot changes and coordinate bus replacements to align with any transition to propane.