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Central Square trustees hear updated electric-bus study that cuts feasible routes from about 50 to 21
Summary
A consultant told the Central Square board that revised assumptions about trip timing and charging spikes reduce the number of district routes currently feasible for electric buses from previous estimates (40–51) to 21; staff and board members discussed grants, battery-storage options and timing for capital work and referendums.
The Central Square Central School District on Monday heard a revised fleet-electrification analysis showing that, under current bus and battery technology, only 21 of the district’s routes are currently feasible for conversion to electric buses.
Gabriel Glantz, project manager at Polara, told the board the change came after recalculating how short, closely spaced trips create demand spikes that force a larger infrastructure size. "Power management is software driven charging so that there aren't any spikes in draw from the grid and that it's equalizing the charging across all the time that's available," Glantz said, arguing that software and scheduling can reduce infrastructure needs but not eliminate the operational limits.
Board members pressed staff and the consultant on practical questions: the district runs 74 routes, staff said; the study initially flagged 40–51 vehicles but the May 2024 update narrowed that to 21 vehicles that are feasible with today's battery ranges. Glantz recommended a minimum infrastructure starting point of 16 Level 2 chargers and 5 Level 3 chargers to serve the recommended fleet and spares.
Trustees and staff also discussed the district’s financing options and the interaction with state policy. A staff presenter noted Central Square’s transportation aid ratio (88.1%) and described current practice under State Education Department (SED) guidance to amortize bus purchases over five years for diesel vehicles, while current electric-bus amortization has been treated as 12 years; "there is currently legislation on the table to move it to 8 years," staff said. Staff warned bond propositions must disclose full purchase prices and cannot rely on post-rebate figures in ballot language.
Board members weighed staging strategies — buying a small number of electric buses alongside diesel replacements — and flagged risks: battery warranties and mid-lifecycle battery replacement costs; capital project timing (district debt-service limits were cited as a constraint that may prevent large projects until 2027); and the uncertainty of grant availability for both power delivery to the site and on-site charging infrastructure. One trustee said the district should hardwire sites and install conduits during a capital cycle so charging stations can be added later without repaving.
The board did not take action on purchases; discussion centered on further study, grant research, and how to present referendum options and community outreach should the district choose to pursue electric-bus purchases.
