Massachusetts School Bus Pilot Shows Revenue Potential for Vehicle-to-Grid Fleets

A Massachusetts vehicle-to-grid pilot has shown how parked electric school buses can serve as distributed energy resources during periods of high electricity demand. With bidirectional charging equipment, a bus can charge when electricity is available and later discharge stored power to the grid when a utility needs support. The source reports that one bus discharged about 10.8 MWh over two summers, while the participating district earned nearly $12,000 per bus per season through the ConnectedSolutions utility program. For school districts and fleet operators, the demonstration puts a potential revenue stream alongside the transportation and emissions objectives that typically motivate electric-bus deployments.

The operating model depends on vehicles being available when peak demand occurs. School buses are often parked for extended periods, particularly during summer breaks, making their batteries potentially useful to utilities seeking short-duration demand response. The source describes bus batteries in the range of 150 to 300 kWh and explains that bidirectional chargers can reverse the usual flow of electricity, allowing energy to move from a vehicle back to the grid. The value is therefore not simply a function of battery capacity: it also depends on charging infrastructure, the utility’s program rules, dispatch timing, bus schedules, and the fleet’s ability to maintain sufficient charge for upcoming routes.

For public-sector buyers, the reported financial results are an input to market research and project planning, not a guaranteed return. Districts considering an electric-bus procurement can assess whether vehicles and chargers are compatible with vehicle-to-grid operations, whether local utilities offer demand-response participation, and how dispatch requirements fit fleet availability. They should also account for battery-warranty provisions, charging and interconnection needs, operational responsibility, and how revenue is allocated among the district, fleet contractor, charging provider, and utility. The source’s reference to a twenty-bus program earning thousands of dollars per vehicle annually is an estimate described in fleet-management guidance, rather than a confirmed result for every district or deployment.

The broader signals point to possible growth in integrated procurements that combine vehicles, bidirectional chargers, software or controls, and ongoing grid-response operations. The source names Xos, which it says began factory-level production of school buses equipped with bidirectional capability in April, and the supplied vendor list also identifies Highland Electric Fleets. Related examples include a Vermont–Massachusetts pilot that discharged more than 17 MWh and an Oakland electric-bus deployment projected to deliver 2.1 GWh annually to the grid. These examples provide context for agencies, districts, and contractors evaluating the technology, but the supplied information does not identify a new solicitation, formal contract award, or guaranteed performance commitment. Any procurement strategy should distinguish demonstrated pilot outcomes from projections and confirm local program terms before building expected grid revenue into a project’s business case.

• Massachusetts pilot: One electric school bus discharged about 10.8 MWh over two summers into the suburban Boston distribution grid.
• Reported revenue: The participating district earned nearly $12,000 per bus per season through the ConnectedSolutions program, according to the source.
• Technology requirement: Vehicle-to-grid service relies on bidirectional charging hardware that can both charge a bus and send stored power back to the grid.
• Fleet-planning factor: The source describes bus batteries of roughly 150–300 kWh and highlights extended parking periods, especially during summer, as a potential operational advantage.
• Related pilot: A Vermont–Massachusetts effort reportedly discharged more than 17 MWh; this is a separate example and should not be treated as a Massachusetts-only result.
• Related deployment: An Oakland electric-bus deployment is projected to provide 2.1 GWh annually to the grid; the figure is a projection, not a measured result in the supplied material.
• Supplier signal: Xos is reported to have begun factory-level production of school buses with bidirectional capability in April; Highland Electric Fleets is also identified among the vendors.
• Buyer actions: Districts and fleet contractors can review utility-program eligibility, charger and vehicle compatibility, bus availability during peak periods, interconnection needs, and battery-warranty tracking.
• Commercial opportunity: Manufacturers, charging providers, and fleet operators may pursue integrated vehicle, equipment, and grid-response offerings, while validating program economics and operational obligations.
• Procurement status: These are pilot and deployment examples—not announced open solicitations or formal contract awards—and actual revenue depends on program terms and fleet operations.