A comparative analysis of the dependence of the prime cost of electrical power on the cost of money supply for different types of generation was carried out. Two the most popular types of technologies in conventional power industry (thermal one on the basis of coal and nuclear one) and two the largest prospective types of technologies in alternative power industry (wind and solar power) were taken to contrast the situation. The comparison was carried out within the range from the lowest possible cost of electricity (minimum costs with maximum possible utilization coefficient) to the largest possible cost of electricity (maximum cost with the lowest possible utilization coefficient). Wind power can provide the lowest cost of electricity among all other types of generation in question within the range from the minimum to maximum values whereas thermal energy provides the highest cost of electricity and with maximum values it turns to be absolutely uncompetitive. The cost of electricity for nuclear and solar power supply is relative. Upon reception of credit resources with baseline interest nuclear and solar power could provide electricity for industrial consumers as per existing tariffs in Ukraine at the lowest prime cost.