The idea of powering railway locomotives using green energy is one that could, theoretically,rnreduce or save power from grid supply in Ethiopian railway sector. Solar Energy is one methodrnof conserving energy in rails and regenerative breaking other method. We can also combine therntwo for maximum optimization. In this thesis is to assess the technical feasibility of employingrnsolar power combined with grid supply in Addis Ababa light railway vehicle that could reducernconsumption of power from gird supply. This is meant to serve as reference to future workrnregarding the cost-benefit analysis that employs this power source option. rnThis thesis presents a design of grid-solar hybrid system for powering auxiliary system of AddisrnAbaba Light Train. The power management system consists of a PV and auxiliary power box ofrnthe train of the LRT powered by grid (pantograph) to replace or use solar panels on the roof ofrnthe train to reduce power consumption, considering variation in the load and solar radiation. Thernproposed system aimed to minimize the power drawn from the grid and operate the PV within arnspecific power range and also maximum power point tracker will be used in order to get the bestrnout of PV. It provides theoretical studies of photovoltaic systems and modeling techniques usingrnequivalent electric circuits. rnAs the system employs the maximum power point tracker (MPPT), it is consisting of MPPTrnalgorithms, control methods and MATLAB simulations verify the DC-DC converter design. Thernpower management involves the control of power where a proportional and Fuzzy based integralrn(PI) controller is used. A fuzzy logic controller is also developed to generate appropriate controlrnparameters. MATLAB modeling and simulation of the whole system will be done and result wilrnbe discussed.