QTC Energy Public Company Limited, together with its subsidiaries, engages in the manufacture, sale, and distribution of electric transformers in Thailand and internationally. The company offers oil and dry type, and super low loss transformer products; residential, commercial, and utility smart PV solution; and EV charger products. It also provides various services, such as scheduled check and maintenance, transformer repair and maintenance, transformer oil fill, transformer rental services, and installation of electrical equipment and solar panels. In addition, the company is involved in the import and distribution of product and equipment relating to the solar cell; investing renewable energy business; operating in electric vehicle energy sector; and operates solar power plant. It sells its products under the QTC trademark, as well as under customer specific brands. The company was formerly known as QTC Transformers Co., Ltd. and changed its name to QTC Energy Public Company Limited in August 2010. QTC Energy Public Company Limited was founded in 1996 and is headquartered in Bangkok, Thailand.