Public Joint-stock Company TNS energo Mari El supplies electricity in the Republic of Mari El. The company serves 340,511 individuals and 8,329 legal entities. The company was formerly known as Joint-Stock Company Marienergosbyt and changed its name to Public Joint-stock Company TNS energo Mari El in June 2015. The company is based in Yoshkar-Ola, Russia. Public Joint-stock Company TNS energo Mari El is a subsidiary of Public Joint Stock Company Group of Companies TNS energo.