A 37-year-old Kitchener man has been arrested after Waterloo Regional Police Service seized 832 pot plants on Thursday afternoon.
Police say excessive hydro use at a Cambridge warehouse caused them to get a search warrant.
There police found a marijuana grow operation.
Lam Duy Duong has been charged with Production of a Controlled Substance, and Possession for the Purpose of Trafficking.
He will remain in custody until his next court appearance.