Understanding how Vehicle-to-Grid technology helps electric school buses support both transportation and community energy resilience.
What is Vehicle-to-Grid (V2G)?
Vehicle-to-Grid (V2G) is a technology that allows electric vehicles to do more than simply charge from the grid. With V2G, a vehicle battery can also send stored electricity back when needed. This creates a two-way flow of energy between the vehicle and the power system.
In the Recharge-OK project, electric school buses are being explored not only as transportation vehicles, but also as mobile energy resources that can help improve resilience during severe weather, outages, and high-demand periods.
Why Electric School Buses?
Electric school buses are especially well suited for V2G because they combine large battery capacity, predictable schedules, and limited daily route distances. Compared with many other vehicles, school buses often spend long periods parked between routes or outside school hours, which creates opportunities for managed charging and energy discharge.
This means they may be able to support both transportation needs and energy resilience goals without requiring an entirely separate backup energy system.
Large Battery Capacity
Electric school buses carry substantial battery storage that can potentially support backup power and grid services.
Predictable Schedules
School transportation follows regular daily routines, making it easier to plan charging and availability.
Dual Purpose
The same asset can support student transportation while also contributing to community energy resilience.
How Charging and Discharging Work
A V2G-enabled system depends on more than the bus battery alone. It also requires bidirectional chargers, control systems, and operating rules that determine when the bus should charge, when it can discharge, and how its transportation schedule is protected.
1. Charging
When electricity is available and the bus is not needed for routes, the battery can be charged through a bidirectional charger.
2. Stored Energy
The battery stores electricity until it is needed for transportation, peak demand management, or emergency support.
3. Discharging
During an outage or high-demand period, the system can send electricity back from the bus battery through the charger to support resilience goals.
Important: A V2G system must always prioritize safe operation and school transportation needs. Energy discharge decisions should be managed so that buses remain available for their intended routes and responsibilities.
Why It Matters for Communities
In Oklahoma, tornadoes, ice storms, extreme heat, and other severe weather events can interrupt power systems and daily life. V2G technology offers one way to improve preparedness by using existing public assets more effectively.
Emergency Support
Stored electricity may help support critical community functions during outages or severe disruptions.
Peak Demand Reduction
Managed discharge can help reduce stress on the grid during times of especially high electricity demand.
Community Resilience
V2G can help communities think differently about resilience by turning transportation fleets into potential energy assets.
How Recharge-OK Applies V2G in Practice
Recharge-OK is applying these ideas through a pilot in Shawnee, Oklahoma. The project brings together schools, utilities, researchers, community stakeholders, and industry collaborators to evaluate how V2G-enabled electric school buses can support both transportation and resilience goals.
In addition to technical deployment, Recharge-OK also includes community engagement, educational outreach, and a decision-support platform that helps communicate energy performance, system impacts, and future planning opportunities.
- Pilot implementation in Shawnee Public Schools
- Use of bidirectional charging infrastructure
- Evaluation of backup power and peak demand support
- Community workshops, outreach, and STEM activities
- Data communication through a decision-support platform
Looking Ahead
Recharge-OK aims to show how public-sector assets such as school transportation fleets can contribute to a more resilient energy future. By combining technical research, practical deployment, and community-centered planning, the project is building a model that can inform future V2G efforts in Oklahoma and beyond.