Altern Energy Limited is a Pakistan-based company, which owns, operates and maintains a 32-megawatt gas-based thermal power plant located near Fateh Jang, district Attock, Punjab in Pakistan. The Company sells the electrical energy produced to Water and Power Development Authority (WAPDA) under long term Power Purchase Agreement (PPA). The Company's subsidiaries include Power Management Company (Private) Limited (PMCL) and Rousch (Pakistan) Power Limited. The Company is a subsidiary of Descon Engineering Limited.