Tenaga Nasional Bhd, or TNB, is an electric utility company in Malaysia. The company is involved in the generation, transmission, distribution, and sale of electricity. TNB segments includes Power Generation, Grid, Distribution Network, and Retail. The generation division encompasses the company's portfolio of thermal and hydroelectric power plants located throughout Malaysia. Through its subsidiaries, TNB also engages in other energy-related operations, such as the manufacturing of transformers and the providing of consulting services. The company generates revenue through the sale of electricity in West Malaysia. Its customers are mainly commercial operations, domestic consumers, and large industrial entities.