This work intends to hybridize a solar field into the current waste to energy gasification power plant in Boa Esperança in Minas Gerais. The gasification process converts municipal solid waste to usable synthesis gas for electrical production. This current operation of waste to energy power plant removes waste accumulated from the landfill site. It recovers an extensive area for future solar field installation due to this available space without any waste in the future. The design of the planned solar field comprises the parabolic trough concentrating systems. The aim of the solar design is to provide ongoing heat to the power block with direct storage tanks. The solar field operation is simulated by the development of a Matlab computer program based one dimensional implicit difference method with energy balance approach of an evacuated receiver. The validation of present model was done by comparing the outlet temperatures of simulation results and the experimental data obtained by Sandia National Laboratories. Moreover, the mass flow rate is regulated through the field to make sure that the outlet temperature from the solar collector is kept as close to the desired 390 Celsius Degree as possible. To accomplish the main purpose of the work, many different computational models with start-up and full operation stages are suggested for different clear days along the typical meteorological year of the city Boa Esperança. Eventually, a cloud day with a real meteorological data was chosen for a computational model of the solar field performance. All results of the real day operation are used to improve the computer program of the present work. These results are useful for future solar field design.