Electric school buses could help power Illinois’ grid
A handful of school buses in northern Illinois will soon have a new summer job. ComEd is the latest utility to explore whether electric school buses could help manage the grid when school is out of session and air conditioners are humming. Under such vehicle-to-grid, or V2G, arrangements, electric school buses charge up at night when power is cheap and plentiful, then discharge electricity to the grid when local power demand is high. This infusion can alleviate the need to fire up natural gas peaker plants, buy expensive power on the market, or even build new power plants. The buses basically act as batteries attached to the grid, in a win-win situation where school districts are paid for the service and utilities get power that is cheaper and possibly cleaner than what they could otherwise acquire during peak hours. V2G projects are still in nascent and pilot-project stages, and significant challenges exist. The grid needs to communicate seamlessly with the bus charging station, and operators must make sure bus batteries are ready when needed and that the grid isn’t overloaded by local bursts of energy. Standards and certifications for V2G technology and practice are also still in early stages. “It takes a lot of effort to do those communications properly,” said Greggory Kresge, senior manager for utility engagement and transportation electrification at the World Resources Institute, a research and advocacy nonprofit focused on environmental and economic issues. “You have communication about speed, power level, how many kilowatts, how fast, what’s the duration — all these different packets of information going back and forth. It’s a fragile ecosystem. If one of those communication links breaks, it doesn’t function.” ComEd has proposed a pilot project launching this spring and running through 2025 in partnership with the San Diego-based company Nuvve, which also has led V2G pilots in California, Delaware, and New York as well as in Europe and Asia. While the ComEd pilot will only involve four electric school buses in three different northern Illinois school districts, it could pave the way for widespread V2G in an area with hot summers, air pollution problems, and lots of students. “The main idea is to look at this from a technology-demonstration standpoint,” said Sri Raghavan (Raghav) Kothandaraman, ComEd manager of emerging technology, smart grid, and innovation. “How does the charger work in connection with the bus? How does it work with the grid? How do we send commands to these chargers to be able to discharge during particular times? We’re trying to look at it from a win-win-win scenario for school districts and [electric bus] manufacturers as well as the utility.” Kothandaraman said he could not say whether the buses are already owned by the districts or would be provided by ComEd. Nuvve CEO and cofounder Gregory Poilasne said the vehicles would be made by Blue Bird, one of the country’s leading electric-bus manufacturers. Resiliency and opportunity Electric school buses cost about three times as much upfront as traditional diesel school buses, though the savings on fuel and maintenance can make the total cost of ownership lower over time. School districts have had access to electric school bus funding from the Volkswagen emissions-cheating settlement and the Biden administration’s $5 billion Clean School Bus Program, but the federal initiative ends next year. Clean energy advocates say V2G programs could provide a new revenue source that makes electric school buses more financially viable for districts while slashing the air pollution and noise that students and drivers are exposed to with diesel buses. A 2022 WRI report counted at least 15 utilities across 14 states with electric school bus V2G programs. Kresge noted that school districts can earn high payments for power from their buses during peak demand or “emergency load reduction program” times designated by utilities. In California pilot programs, utilities pay $2 per kilowatt-hour during emergency load reduction periods, whereas market prices in the state hover around 30 cents per kilowatt-hour. Along with feeding the grid, electric school buses can act as behind-the-meter batteries that give schools emergency power during blackouts, Kresge said. In California, they can also power school buildings when utilities shut down transmission lines because of wildfire risk.
A handful of school buses in northern Illinois will soon have a new summer job. ComEd is the latest utility to explore whether electric school buses could help manage the grid when school is out of session and air conditioners are humming. Under such vehicle-to-grid, or V2G, arrangements , electric school buses…
A handful of school buses in northern Illinois will soon have a new summer job.
ComEd is the latest utility to explore whether electric school buses could help manage the grid when school is out of session and air conditioners are humming.
Under such vehicle-to-grid, or V2G, arrangements, electric school buses charge up at night when power is cheap and plentiful, then discharge electricity to the grid when local power demand is high. This infusion can alleviate the need to fire up natural gas peaker plants, buy expensive power on the market, or even build new power plants.
The buses basically act as batteries attached to the grid, in a win-win situation where school districts are paid for the service and utilities get power that is cheaper and possibly cleaner than what they could otherwise acquire during peak hours.
V2G projects are still in nascent and pilot-project stages, and significant challenges exist. The grid needs to communicate seamlessly with the bus charging station, and operators must make sure bus batteries are ready when needed and that the grid isn’t overloaded by local bursts of energy. Standards and certifications for V2G technology and practice are also still in early stages.
“It takes a lot of effort to do those communications properly,” said Greggory Kresge, senior manager for utility engagement and transportation electrification at the World Resources Institute, a research and advocacy nonprofit focused on environmental and economic issues. “You have communication about speed, power level, how many kilowatts, how fast, what’s the duration — all these different packets of information going back and forth. It’s a fragile ecosystem. If one of those communication links breaks, it doesn’t function.”
ComEd has proposed a pilot project launching this spring and running through 2025 in partnership with the San Diego-based company Nuvve, which also has led V2G pilots in California, Delaware, and New York as well as in Europe and Asia. While the ComEd pilot will only involve four electric school buses in three different northern Illinois school districts, it could pave the way for widespread V2G in an area with hot summers, air pollution problems, and lots of students.
“The main idea is to look at this from a technology-demonstration standpoint,” said Sri Raghavan (Raghav) Kothandaraman, ComEd manager of emerging technology, smart grid, and innovation. “How does the charger work in connection with the bus? How does it work with the grid? How do we send commands to these chargers to be able to discharge during particular times? We’re trying to look at it from a win-win-win scenario for school districts and [electric bus] manufacturers as well as the utility.”
Kothandaraman said he could not say whether the buses are already owned by the districts or would be provided by ComEd. Nuvve CEO and cofounder Gregory Poilasne said the vehicles would be made by Blue Bird, one of the country’s leading electric-bus manufacturers.
Resiliency and opportunity
Electric school buses cost about three times as much upfront as traditional diesel school buses, though the savings on fuel and maintenance can make the total cost of ownership lower over time.
School districts have had access to electric school bus funding from the Volkswagen emissions-cheating settlement and the Biden administration’s $5 billion Clean School Bus Program, but the federal initiative ends next year. Clean energy advocates say V2G programs could provide a new revenue source that makes electric school buses more financially viable for districts while slashing the air pollution and noise that students and drivers are exposed to with diesel buses.
A 2022 WRI report counted at least 15 utilities across 14 states with electric school bus V2G programs. Kresge noted that school districts can earn high payments for power from their buses during peak demand or “emergency load reduction program” times designated by utilities. In California pilot programs, utilities pay $2 per kilowatt-hour during emergency load reduction periods, whereas market prices in the state hover around 30 cents per kilowatt-hour.
Along with feeding the grid, electric school buses can act as behind-the-meter batteries that give schools emergency power during blackouts, Kresge said. In California, they can also power school buildings when utilities shut down transmission lines because of wildfire risk.