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Hidroelektrarna Vrhovo je prva v verigi spodnjesavskih elektrarn, zgrajena leta 1993, in kot hidrotehnični objekt, ki je umeščen v prostor vodotoka po celotni širini, vpliva na hidravlične razmere v akumulaciji. Obratovanje na pregradnem objektu hidroelektrarne je v obstoječem poslovniku obratovanja določeno v odvisnosti od pretokov iz gorvodnih območij, ne pa tudi v odvisnosti od vpliva dotekajočih plavin in naplavin v akumulaciji. V nalogi je uvodoma predstavljena vloga hidroenergije kot obnovljivega vira energije v elektroenergetskem sistemu, sledi krajši pregled obstoječe literature s področja vpliva plavin v akumulaciji in zgodovinski pregled obstoječih analiz prodonosnosti oz. premestitvene zmogljivosti in kalnosti na območju hidroelektrarne Vrhovo kot osnova za kasnejšo validacijo modela premestitvene zmogljivosti. V analitičnem delu naloge je uvodoma preučevano časovno spreminjanje volumna akumulacije zaradi vpliva plavin, sledijo teoretične podlage in predstavitev uporabljenega modela premestitvene zmogljivosti, izdelava računske mreže in določitev robnih ter vhodnih pogojev modela. Jedro naloge predstavlja analiza in vrednotenje rezultatov simulacije premestitvene zmogljivosti in kasneje implementacija teh rezultatov za optimizacijo obstoječe denivelacijske/obratovalne krivulje s priporočili. HPP Vrhovo is the first powerplant in the chain of the lower Sava River Basin, built in 1993 and as an object, spatially positined across the full width of the river, influences hydraulic conditions within the reservoir. Operation rulebook of the HPP Vrhovo determines dam gates and flaps operation only according to upstream flows, without considering sediment influence in the reservoir. At first, the role of hydroenergy as an renewable energy source in the electricity production is presented, followed by a short literature review from the expert field of sediment influence on reservoir hydraulic conditions and historical review of key sediment transport analyses of the HPP Vrhovo reservoir as one of later validation tools of the sediment transport simulation results. In the analytical section of the thesis, temporal changes of the HPP Vrhovo reservoir volume are analysed initially, followed by sediment transport theoretical basis, short introduction of used sediment transport model, development of model numerical grid and setting of initial and boundary conditions of the model. The core of this thesis is presented in the latter part, analysis and validation of the results of sediment transport simulation and finally implementation of those results into optimization of existing operation rule curve with final recommendations.