Subsidiary of Hidroelektrane na Trebišnjici a.d. (abbreviated ZP HET or only HET) is a Bosnian company engaged in the production of electricity in hydropower plants Trebinje I, Trebinje II and Dubrovnik and their maintenance. Hydroelectric power plants on Trebišnjica operate within the mixed holding company Elektroprivreda of the Bosnian entity Republika Srpska, Elektroprivreda Republike Srpske. HET is listed on the Banja Luka Stock Exchange, one of the two stock exchanges in Bosnia and Herzegovina.

Hydropower plants

The hydroelectric power plants on Trebišnjica manage a total of three hydroelectric power plants, HPP Trebinje I, HPP Trebinje II and HPP Dubrovnik. According to the signed contract on the distribution of the produced HPP Dubrovnik, Hrvatska Elektroprivreda (HEP) owns 22% of the electricity, and HET, in relation to ERS, 78% of the total produced electricity. Although PHE Čapljina is also part of the HET system, it is owned by Elektroprivreda HZHB.