TellusPower
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TellusPower and Zūm deploy bidirectional chargers for US electric school bus fleets
TellusPower is supplying bidirectional chargers to transportation-as-a-service startup Zūm, which is credited with deploying the first fully electric school bus fleet in the US, a 75-strong fleet in Oakland Unified School District for the 2024 to 25 school year. A more recent project with San Francisco Unified School District uses the same hardware, which Zūm white-labels. TellusPower CEO Mike Calise told EV Infrastructure News that the chargers act as a "power router", linking idle bus batteries with the grid, buildings and battery storage for up to 5MW of theoretical cumulative capacity.
Why it matters
Fleets with fixed duty cycles, such as school buses and refuse trucks, are being positioned as dispatchable energy assets, which could change how depots are specified and how bidirectional hardware is procured. The white-label arrangement also shows hardware vendors reaching the market through fleet service providers rather than selling direct.