The founder of a Florida-based neo-Nazi group was convicted Monday of conspiring with his former girlfriend to plan an attack on Maryland’s power grid in furtherance of their shared racist beliefs.

Brandon Russell, a 29-year-old neo-Nazi leader from Orlando, Fla., faces up to 20 years in prison after a federal jury found him guilty of conspiring to damage a Maryland energy facility.

Neo-Nazi Brandon Russell is convicted of plotting to blow up Baltimore’s power grid as part of plan to sew chaos in the city. His co-defendant, Sarah Beth Clendaniel, earlier pleaded guilty in the case.