The Simón Bolívar Hydroelectric Plant, also Guri Dam, previously known as the Raúl Leoni Hydroelectric Plant, is a concrete gravity and embankment dam in Bolívar State, Venezuela, on the Caroni River, built from 1963 to 1969. It is 7,426 metres long and 162 m high. It impounds the large Guri Reservoir with a surface area of 4,250 square kilometres (1,641 sq mi).

Bolívar is one of the 23 states of Venezuela. The state capital city is Ciudad Bolívar and the largest city is Ciudad Guayana. Bolívar State covers a total surface area of 242,801 km2 (93,746 sq mi) and as of the 2011 census, had a population of 1,410,964. The state contains Angel Falls.