In article the review of assessment methods of the energy supplied to the surface of solar panels. Need of increase in accuracy of calculation of the solar energy entering on the panel is proved due to accounting of the additional influencing factors. A technique for estimating solar energy to the surface of panels has been developed. The degree of cloudiness influence on the solar energy input for the area under consideration is identified. Comparison of results of modeling with use of the developed technique and specialized computer programs is carried out. The comparison showed satisfactory results. Modeling of incoming solar energy for the existing solar power station showed a higher quality of the developed technique compared with specialized software. The optimal angle of inclination of the solar panel is calculated and the reduction of the incoming energy is analyzed when the angle deviates from the optimal value. The application of modeling of incoming solar energy intake to obtain daily graphs for the electricity generation of a solar power station and comparing them with daily graphs of the electrical load of the consumer is considered. Conclusions by results of researches are drawn.

The authors propose a model of fuzzy inference system (FIS) to determine the optimal consumption of hydro resources of hydroelectric reservoirs by the criterion of maximum generation of electrical energy. It is proposed to use a fuzzy controller that allows to develop optimal strategies to ensure the maximum energy output of hydroelectric power stations and passes to the downstream, to formulate proposals for creating a subsystem for calculating the regimes, schedules of drawdown and filling of reservoirs by the criterion of maximum generation of electrical energy. The use of fuzzy controllers and submission to their inputs of data on changes in the regimes of a cascade of hydroelectric stations in real time allows us to obtain a FIS system that will be an assistant for the operational management of hydroelectric reservoirs.