Šio darbo tikslas – ištirti stochastinio programavimo energetikos uždavinį. Darbe tyrinėta Lietuvos energetikos struktūra, taip pat tyrinėti optimizavimo metodai. Sudarytas Lietuvos energetikos uždavinio modelis. Optimizavimo modelis realizuotas Java programa. Optimizavimo programoje panaudotos objektinio ir lygiagretaus programavimo paradigmos. Atlikti energetikos uždavinio parametrų tyrimai. / Primary goal of this work was to research stochastic programming model of the energetic system. In this paper we also studied Lithuanian energetic sector structure and made Lithuanian energetic model. This model was realized in Java programming language. Created program is written using object-oriented and parallel programming paradigms. Also we researched different parameters influence on the model.