Otashdoni oftobi, dastgohest baroi akkumulyasiya va istifoda burdani energiyai Oftob dar pukhtupaz. Unsuri asosii Otashdoni oftobi geliokonsentrator (jamovarandai nuri Oftob) meboshad, ki az yak yo yakchand oina va yo linza iborat ast. Geliokonsentratori Otashdoni oftobi aksaran dar shakli paraboloid sokhta meshavad. Geliokoyasentratorro ru ba samti harakati zohirii Oftob doshta, dasti idora mekunand.
Koeffisient amali mufidi Otashdoni oftobi ba 55—60% merasad. Dar SSSR holo az tajriba tadrijan ba istifodai Otashdoni oftobi guzashta istodaand. Makhsusan dar respublikahoi Osiyoi Miyona, ki sole besh az 200 ruz Oftob nurposhi mekunad, istifodai geliodastgohho az jumla Otashdoni oftobi peshomadhoi kalon dorad.