Synthesis of SiC was achieved by using concentrated solar energy provided by the IER-UNAM solar. The synthesis consisted in 5 steps, where the last 2 steps were performed by using concentrated solar energy. In this step, silica synthesized by the sol–gel method was used as a precursor of silicon, and sucrose as precursor of carbon. The last step of the synthesis was carried out at a temperature of 1500 C in argon atmosphere; in this case a graphite crucible was used to support the sample. According to the results of TEM, the SiC particles system is polydisperse in size, with grains of nanometer order size. Results showed that it is feasible the use of concentrated solar energy for the synthesis of SiC with lower CO2 emissions than conventional methods.