OAO Irkutskenergo is engaged in power generation business. The Company operates various hydro and thermal power plants. The Company operates a range of hydraulic power plants, including Irkutsk hydroelectric power station (HPS), Bratsk HPS and Ust-Ilimsk HPS. It operates a range of thermal power plants, including thermal power station (TPS)-6, TPS-9, TPS-10, TPS-11, TPS -12, TPS-16, Novo-Irkutsk TPS, Novo-Ziminsk TPS and Ust-Ilimsk TPS. It operates electricity transmission networks, including transmission networks with voltage of approximately 500 kilowatts and heat transmission networks. Its projects include the construction of Olkhonskie Vorota-Khunzhur, which is an approximately 40 kilovolts overhead line. Its basic grid development projects include introduction of the automated control system of the equipment condition (ACSEC), total manufacturing optimization (TMO) project and heating supply of the Right-Bank District of Bratsk due to Bratsk Gas-Condensate Field, among others.