Low power output due to poor anode kinetics is minimized by modifying the anode with rGO-Zeolite to improve the electrochemical redox reactions in biophotovoltaics (BPV). Higher power production and N/P- recovery is successfully achieved in horizontal Torch separator-based urine fed BPV modified with rGO-Zeolite anodes than bare graphite anode. Among the two variants of anodes, modified anode results in power of 146.88 mW/m2, redox current of 18.9 mA, Phosphorous (88 ± 0.3%), NH4+–N (49 ± 0.5%), and Coulombic efficiency of 15.16 ± 0.3%. Improvement in power output is due to the higher electroactive surface area provided by rGO-Zeolite anode for electron transfer. Recovery of clear catholyte (8 ml/day) during human-urine treatment and energy recovery for operating the hygro-clock are the main key features of low-cost BPV. Thus, BPV with modified anodes serves as a sustainable technology for recovering energy and resources from human urine and makes it suitable to use for onsite urine treatment and sanitation applications. Display omitted •Novel clay separator-based urine BPV tested with rGO and zeolite modified anode.•rGO and zeolite modified anode performed well due to enhanced microbial adherence.•The scope and potential of rGO and zeolite modified anode in urine BPV was assessed.•Horizontal positioning of torch separator made recovery of struvite easy.•Long term reliability and direct powering of hygro-clock with urine BPV obtained.