Montgomery County Fire and Rescue Services (MCFRS) responded Tuesday morning to a house fire in the Olney Square neighborhood involving solar panels on the roof of a two-story single-family home in the 4400 block of Thornhurst Drive.

According to MCFRS, the fire was contained to the solar panels with no extension into the home. Crews extinguished the fire quickly, and no injuries were reported. Officials said the family is able to re-occupy the home.
MCFRS also highlighted the successful use of a newly acquired tool known as “PVStop,” a handheld unit that applies a deactivating liquid to photovoltaic (PV) systems. The agent was used in place of traditional tarps to safely shut down the energized solar panels during the incident.
Update – Thornhurst Dr, Olney Square neighborhood, 2-sty sign-family house, fire involved solar panel on roof, no extension, fire out, no injuries, family can re-occupy, @mcfrs effectively deployed ‘PVStop’ agent (in lieu of tarps) in order to deactivate solar panels https://t.co/ZwprUqNFDL pic.twitter.com/HlnlqtMdSS
— Pete Piringer (@mcfrsPIO) April 8, 2026

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