A exergoeconomic and techno-economic analysis of integrating multi-effect distillation, absorption refrigeration and process heat plants in a concentrated solar power plant is carried out. A solar multigeneration plant is modeled to simultaneously produce electricity, desalinated water, cooling, and process heat. The methodology considers modeling a multi-generation plant, applying exergoeconomic method and levelized cost method. The solar multi-generation plant is simulated in a typical meteorological year, with one hour time-step and a yearly total DNI of 3,389 kW h/m(2)/year, considering the demand of a specific mining company located in northern Chile. The analysis of simulation shows that the levelized cost method overcharges electricity and undercharges water, cooling and process heat with respect to the exergoeconomic method. The exergoeconomic method is a robust method of cost allocation for applying in a solar multi-generation plant.