. According to the experts, in 2000-2010 in Armenia energocomplex it is necessary to invest about $635 million. It was said in the document introduced by the committee on power system. For Armenia energocomplex hydroelectric plant building is the first thing to do. According to the accepted standards, for atomic power stations for 1kilowatt of adjusted energy it is necessary about $1500, for heat-and-power station it is about 800, for hydroelectric plant it is $1200-1500.