In this study, an attempt was made to establish green energy from agricultural waste (orange peels). Activated carbon (AC) was produced from orange peels with chemical activation agent i.e. phosphoric acid (H3PO4) by the carbonization activation process. The influences of the process, carbonization temperature, and activation temperature (600°C) for time 2 h with H3PO4 of 1:1 ratio on the resulting activated carbon properties were evaluated. The AC is an excellent adsorbent and its applications are widely described in the literature. Prepared ACs are characterized by standard methods like XRD, SEM, FTIR, and XRF. XRD analysis is used to study the presence of a highly organized crystalline structure for AC. The surface chemical characteristics of activated carbons were determined by the FT-IR method. The microstructure of the produced activated carbons was examined by scanning electron microscopy (SEM). XRF is used to study the different concentrations of inorganic elements present in the produced AC. The result also shows the presence of seven elements with their concentration. Thus present study adds one more bio-waste source as useful raw material for the preparation of AC.