Khopoli is an industrial city in the Khalapur taluka of Raigad district, in the Indian state of Maharashtra, at the base of the Sahyadri mountains. Patalganga River, which is the tailrace channel of the Tata Hydroelectric Power Station, flows through Khopoli. It is a municipal council and is a part of the Mumbai Metropolitan Region. Khopoli Municipal Council covers an area of 30 km2. Khopoli is served by a railway station connected to the Mumbai suburban railway by a single line from Karjat.