Introduction: The Sayano – Shushenskaya Hydroelectric Power Station is located on the Yenisei River, near Saynogorsk in Khakassia. It was previously the largest hydroelectric power station in Russia and the sixth largest hydroelectric power station in the world. Construction began in 1968, taking 10 years to build and opened in 1978. The facility was designed by Leningrad. After the fall of the Soviet Union the station was privatized and RAO UES became the main shareholder. RusHydro operated the plant, controlling the production of 10 turbines, each with a capacity of 640 MW. The station was one of the largest contributors to the local electricity grid and over 70% of the energy generated went to the four smelters of the Aluminum Company called Rusal in Siberia. On August 17, 2009 at 8:13 local time (00:13 GMT) at the Sayano-Shushenskaya Hydroelectric Power Plant a serious accident occurred when the structure, design, maintenance and safety controls of Turbine 2 failed each other and caused massive destruction and death. Background: The Sayano-Shushenskaya hydroelectric power station was the largest hydroelectric power station in Russia. Operated by RusHydro. On August 17, 2009 at 8:13 am local time, a serious accident occurred. The water-flowing turbine two tore it from its position and lifted it 14 meters into the air, the turbine continued to spin tearing up the concrete and spreading it around it. Eventually the turbine hit the turbine cover supposedly held in place by 80 bolts every 8 cm ripping it out of position and the 920 ton rotor flew out of place hitting the room and the surrounding wall of the turbine hall destroying the ceiling and surrounding wall. Due to a series of short circuits other turbines began......middle of paper......oss in failure. Many villages and towns were without electricity for a long period of time before power was restored. The solution in the aftermath of the accident was that the spillway was adjusted to lower the reservoir's water level by 3 to 5 centimeters. The flood water was pumped out of the engine room by 24 August 2009. On 28 August the search and rescue operation was completed and the state of emergency imposed in Khakassia on 17 August 2009 was lifted. The solution to the massive loss of power was to accelerate the construction of the Boguchany hydroelectric power plant to replace the lost generating capacity. Chemical absorbents were used to absorb the oil spill in the Yenisei River and were completely removed by August 25, 2009. August 19 was declared a day of mourning in Khakassia, and August 25 was declared a day of mourning at the company RusHydro.