Mobile Sources Control Program

EV Bus Grant Title Image

Electric school buses improve public health and the environment by reducing harmful emissions. Traditional diesel-powered buses release pollutants that contribute to poor air quality and pose risks to both students and the broader community. By transitioning to electric buses, schools can significantly reduce greenhouse gas emissions and decrease the exposure of children to toxic exhaust, creating a healthier environment for future generations. Electric buses also are quieter and more energy-efficient, which contributes to a reduction in noise pollution and long-term operational costs.

The Maryland Department of the Environment has been at the forefront of this transition, awarding $2 million in grants to help replace diesel school buses with electric models over the last few years. This funding supports the state's commitment to cleaner transportation and environmental sustainability. By investing in electric school buses, Maryland is not only reducing the state's carbon footprint but also ensuring that children travel to and from school in a safer and more environmentally friendly way. Statewide, there are more than 240 electric buses.​

We are now accepting applications for $3 million in state grants to purchase new electric school buses. Each grant will provide $300,000 funding for the replacement of a diesel bus with an electric bus to improve indoor and outdoor emissions for students.​

Proposals must be submitted by February 7, 2025. The department will review the proposals with preference toward projected pollution reductions and environmental justice impacts. Grantees will be announced next spring. 



The Mobile Sources Control Program implements measures and programs to reduce motor vehicle related pollution. Take a look at the following resources to help Maryland achieve cleaner air:                

Fuel Saving Items​

School Bus Funding

Smoking Vehicle Hotline

1-866-677-2833
Report a Smoking Vehicle On-Line

​Contact Us

410-537-3270 or 1-800-633-6101 x3270​​

​What are Mobile Sources?

Mobile Sources include a variety of vehicles, engines, and equipment that generate air pollution, and that move or can be moved from place to place. There are two categories of mobile sources: on-road vehicles and nonroad vehicles.


On-road vehicles include:

  • Light-duty vehicles
  • Light-duty trucks
  • Heavy-duty vehicles
  • Medium-duty passenger vehicles
  • Motorcycles 

Nonroad vehicles include off-road gasoline, diesel, and equipment vehicles such as:

  • Aircraft
  • Airport service equipment and vehicles
  • Commercial equipment
  • Construction equipment and vehicles
  • Farm equipment
  • Industrial equipment
  • Lawn and garden equipment
  • Locomotives
  • Logging equipment
  • Marine vessels
  • Railway maintenance equipment
  • Recreational engines and vehicles
  • Recreational marine vessels