The purpose of this study was to prepare graphene ( rGO ) from graphene oxide ( GO ) using environmentally friendly reducing agents and examine the capacitive properties of the obtained rGO. The objective of this process is to achieve a high degree of reduction and to provide conditions where agglomeration of rGO will be prevented. Determination of capacitive properties may provide insight into the progress of process. Reduction of GO has been succesfully carried out using olive leaf extract (ELM) and olive mill wastewater (OMW) as environmentally friendly reducing agent. Reduction with olive leaf extract was carried out at pH 7 and 10, and with olive mill wastewater at pH 10 and temperature 80˚C. The structural properties of the rGO samples were characterized by FT-IR spectroscopy and thermogravimetric analysis ( TGA ). It was found that reduction of GO with ELM and OMW resulted in a significant decrease of oxygen functional groups and regeneration of sp2 hybridization. By using the thermogravimetric analysis it has been determined that the sample of rGO ( ELM, pH=7) shows the highest oxygene content while the lowest oxygene content was obtained for rGO (ELM, pH=10). The results are in agreement with the values of electrical conductivity for various rGO samples. The highest conductivity is recorded for rGO ( OMW , pH = 10 ) 15.4 S cm^-1, while the lowest conductivity was observed for rGO (ELM, pH=7 ) , 1.2 S cm^-1. Capacitive properties are determined by using cyclic voltammetry and electrochemical impedance spectroscopy ( EIS ) techniques. From the cyclic voltammetry results it can be concluded that for all rGO samples reduced by ELM, constant current is obtained within the potential range of examination which indicates a good capacitive behavior . For rGO ( OMW, pH=10) sample cyclic voltammograms recorded additional current peak related to the redox reaction of the phenolic compounds present within the structure of rGO. The highest specific capacitance values is obtained for the thinnest sample of rGO (ELM, pH=10), 33,96 F g^-1 and for the rGO (OMW, pH=10), 32,26 F g^-1. Thicker layers show smaller specific capacitance values and the best capacitive properties were obtained for rGO (OMW , pH = 10 ) . From the obtained results it can be concluded that the greatest degree of GO reduction and the best capacitive properties of rGO were obtained for the reduction process carried out at pH = 10 while reducing agents used during the synthesis did not significantly affect the properties of the rGO.