Mikšová hydroelectric power plant is a channel power plant that had been the country’s largest hydroelectric power plant until after the Liptovská Mara pumped storage was built. The right-side slopes were used to build the diversion channel, so only the left-side dam was constructed throughout the length, being as high as 22 metres near the plant.
Thanks to the high head the HPP also has a high installed capacity of 3 x 31.2 = 93.6 MW.
Slovenské elektrárne operates 31 hydroelectric plants. Their combined output is 1,652.7 MW, representing approximately 38.4% of the Company’s total installed capacity. Majority of the installations is located on the Váh River cascade, or the longest river in Slovakia. On average, the hydroelectric sources generate 2,070 MW annually (consumption of pumped storage power stations excluded), or some 11% of the electricity produced by Slovenské elektrárne.
Because of their very variable power output and operational flexibility, hydroelectric plants are capable to satisfy the swiftly changing demands in the daily-load diagram, pairing nicely with the base load supply covered by nuclear power plants. Slovenské elektrárne has 736.6 MW installed in river hydropower plants and 916.4 MW in pumped storage power stations.