Green diesel is an alternative petroleum derived fuel owing to their non-renewable nature and high CO2 emissions. Hence, the present study highlights the production of green diesel from renewable and cost-effective fat, oil, and grease (FOG) via hydrodeoxygenation (HDO) reaction over a bimetallic-modified catalyst known as NiaCeb/Fe-F using a series of Ce loadings (Ni0.34Ce0.30/Fe-F, Ni0.34Ce0.42/Fe-F) which were synthesized via the electrodeposition method. Detailed catalyst characterization was conducted, and most of the catalysts exhibited surface areas within the range of 4.45-45.13 m²/g, with 76-233 µmolg^-1 of acid sites. The presence of cerium species not only amplifies the number of acid sites but also facilitates the efficient removal of oxygen species, marking a pivotal advancement in the process. The catalyst also demonstrated a significant needle-like morphological structure. Based on the catalytic HDO screening study at 400 °C within a 6 h reaction time, the Ni0.34Ce0.42/Fe-F (rich Ce vacancy species) catalytic HDO was found to be superior in catalytic activity compared to other catalysts, with a hydrocarbon yield of 53% and selectivity of 74% n-(C15-C18). Despite having a low surface area, the presence of high weak + medium acid sites in the catalyst, helped boost its catalytic activity in HDO.