“Future Energy Mix of Nepalese grid and its effect on Power System”

Abstract

Energy mix refers to the combination of different sources in to the grid to increase the power system reliability. In Nepal most of electricity is from hydro power plant. There are other alternative sources of energy to produce an electricity but hydro is much more available resources to produce electricity. There are different types of schemes of hydro power plants which can be operated to meet base load, intermittent load and peak load. In current situation, there is some deficit of energy. So country is importing energy from India via different points. The generation pattern of hydro power plant is highly dependent in natural phenomenon of rain and hence the flow of water in river. In wet season the generation from run off river hydro power plants is high but in dry season the generation is low. Due to this there is large unbalance may arise in the system. The energy surplus deficit analysis will give an overview of future energy situation in advance which will be very helpful for energy planner to take necessary decision. Energy surplus analysis for fiscal year 2087/088 and for fiscal year 2092/093 under three scenario viz: under 4.5 % with only half of all generation license issued RoR/ PRoR projects in operation within fiscal year 2087/088 and half of generation license applied projects(RoR/PRoR) comes in operation till fiscal year 2092/093 (Scenario 1); under 4.5 % Economic growth rate with all generation license issued projects in operation within fiscal year 2087/088 and all generation license issued and generation license applied projects comes in operation till fiscal year 2092/093 (scenario 2) and under 7.2 % Economic growth with all generation license issued projects in operation within fiscal year 2087/088 and all generation license issued and generation license applied projects comes in operation till fiscal year 2092/093.