Based on the development and utilization condition of energy and resources and power energy demand in the Ngari area of Tibet, possible power supply schemes were studied. A clean energy utilization hybrid model of a reservoir power station and photovoltaic plant is proposed through comprehensive comparison of power system requirements, operation and maintenance, environmental protection, and economics. The system structure, power generation characteristics, and operation effect of this hydro-photovoltaic hybrid system are analyzed. The results show that the complementary power-generating characteristic of the energy utilization pattern using the reservoir power station and photovoltaic plant is beneficial to photovoltaic power consumption and power network safety operation.