Thai Solar Energy Public Company Limited is a Thailand-based company engaged in operation of solar power plants. The Company operates direct stream generation solar thermal power plants and solar photovoltaic power plants, which consist of solar farms, commercial rooftop units, and residential rooftop units. It has agreements to supply all electricity to Metropolitan Electricity Authority (MEA) and Provincial Electricity Authority (PEA). The Company also operates solar farms in Kanchanaburi province and commercial rooftop solar power units in Lopburi, Phrae, Nakhonsawan, Chumphon, Suratthani, Songkhla provinces, among others. It subsidiaries comprise Thai Solar Renewable Company Limited, TSE Rooftop Company Limited, TSE Corporations Company Limited and TSE Group International Pte Ltd.