Sevan–Hrazdan Cascade (Armenian: Սևան-Հրազդան Կասկադ) is a complex of hydroelectric power plants on the Hrazdan River and its tributaries between the Lake Sevan and Yerevan in Armenia.

[3] In 2003 the cascade was given to Inter RAO UES in return for US$25 million debt by Armenia.

[4][5] In 2019 newspaper reported, that Rushydro is going to sell at $2.7 million cascade to Tashir group, owned by Samvel Karapetyan.

[6] Sevan–Hrazdan Cascade is stretched over about 70 kilometres (43 mi) and consists of seven hydroelectric power plants (HPP), with total nominal capacity of 565 MW.

The HPPs are Sevan, Hrazdan, Argel, Arzni, Kanaker, Yerevan-1 and Yerevan-3—all run-of-the-river type.

[8] The water is transported from the Lake Seven to the HPPs through open diversion canals and tunnels.

[12] The Hrazdan Hydroelectric Power Plant, known as Atarbekyan during the Soviet years, is located between the Sevan and Argel stations.

[15] In May 1995, landslides caused by heavy rains destroyed one of the plant spillways and blocked the Hrazdan River channel.

[14] The Arzni Hydroelectric Power Plant is located between of the Argel and Kanaker stations.

The plant is important for providing the peak-load capacity as also supplying Yerevan with irrigation and industrial water.

[2][7] As there is a plan to dredge Yerevan-1 dam right on the biological environment—there is also a high-level risk because of increased turbidity.

Another negative impact may be expected due to works and equipment transportations, which would cause pollution and noise, resulting in a social indignation.

The rehabilitation process will not include any further expansion or creation of new facilities—all the work items are approved according to the plan.