The Oaks Landfill located at 6001 Olney Laytonsville Road in Laytonsville is owned by the County and is a closed and capped landfill. The landfill is the responsibility of the Montgomery County Department of Environmental Protection, Recycling and Resource Management Division. The landfill received mixed municipal solid waste from June 1982 until the Spring of 1995. The Oaks Landfill, home to a diverse array of plants and wildlife, also generates electricity using methane gas naturally produced by the site. The Oaks Landfill totals approximately 545 acres, which includes a capped footprint of 170 acres spread across four parcels.

In September 2019, the Department of General Services issued a Request for Energy Proposals for the Oaks Landfill Solar Photovoltaic Project. It is the County’s intent to install a large scale ground-mount solar energy system at the former landfill on top of the closed cap. The 6 megawatt ballasted ground mount system will be the largest solar project on County property. The solar energy system is expected to generate 11.4 million kilowatt hours of electricity each year – enough to power 930 homes. The solar power is expected to reduce greenhouse gas emissions as much as taking 1,740 cars off the road.