In Concentrated Solar Power (CSP) applications, the design of optical field layout and estimation of optical power received are prerequisites for its development and further implementation. Thus, the estimation of optical power is an important parameter for a given land area is an essential part for a given geographical location. In this proposed work, we investigate the optical layout for central receiver system (CRS), along with heliostats layout for an optical power of 400 kW to 550 kW for a close to 8 hours of operation. By using the ray tracing technique, we estimate amount of radiation reaching the receiver systematically and thus provides a realistic estimate of the optical power that reaches the receiver. The ray tracing carried out for a given configuration of a heliostat field provides an estimate the optical power received by the receiver for two different dimensions of heliostat, that were investigated and the area required for it are presented in this work. © 2019 Author(s).