Moolamattom is the headquarters of Arakulam Panchayath in Thodupuzha Taluk, Idukki district in Kerala, India. It lies 22 km from Thodupuzha, on the banks of the Thodupuzha River, a tributary of the Muvattupuzha river. Moolamattom is famous for India's second largest underground hydroelectric power station - Moolamattom hydro power station.