The total installed capacity of EPS JSC's 16 hydropower plants, comprising 51 hydro-generators, amounts to 3,008 MW, representing almost 37% of the company's overall generation potential. Electricity is produced within the “Đerdap Hydropower Plants" Branch, Kladovo, and the “Drinsko-Limske Hydropower Plants" Branch, Bajina Bašta.

The first hydropower facilities were commissioned in the mid-1950s, beginning with the Vlasina HPPs in 1955, followed by the “Elektromorava" HPPs between 1954 and 1957. Among them, the “Đerdap" Hydropower Plant is regarded as the “queen" of Serbia's hydropower assets.

The Đerdap Branch comprises 28 units with a combined installed capacity of 1,619 MW and an average annual output of 7,161 GWh, accounting for roughly 21% of EPS's total electricity generation. Construction of “Đerdap 1" commenced in 1964 as a joint investment of the Socialist Federal Republic of Yugoslavia and Romania. Twelve units were built — six on each side of the border. The first units were commissioned in August 1970, and the entire facility entered operation on 16 May 1972. In addition to electricity generation, “Đerdap 1" operates ship locks, including a two-stage system that transfers vessels to the downstream level of the Danube. By chamber dimensions, these locks rank among the largest in the world.

Construction of “Đerdap 2" officially began on 3 December 1977, with the first units commissioned in 1985. The plant comprises a power station, ship lock, spillway and non-spillway dam, and a roadway across the dam, with the state border running through its centre. The project also envisages the possibility of a railway line being constructed over the dam.

The Drinsko-Limske Hydropower Plants Branch operates nine facilities on the Drina and Lim rivers, with a total installed capacity of 1,389 MW. Their average annual production of 3,293 GWh represents around 10% of EPS's electricity generation.

​Hydropower Plants

Installed capacity: 3,008 MW

Average annual production (2010–2025): 10,473 GWh (≈31% of EPS electricity generation)

Đerdap HPP Branch 

Installed capacity: 1,619 MW

Average annual production: 7,161 GWh (≈21% of EPS electricity generation)

Drinsko–Limske HPP Branch 

Installed capacity: 1,389 MW

Average annual production: 3,293 GWh (≈10% of EPS electricity generation)

Small Hydropower Plants

Installed capacity: 17.9 MW

Average annual production (2016–2025): 31 GWh (≈0.1% of EPS electricity generation)​