Development of fuzzy logic-based demand-side energy management system for hybrid energy sources

•A hybrid energy system combining grid and solar PV/Battery was designed for powering commercial building loads.•An integrated energy management scheme based on fuzzy logic control was designed for commercial load demand management.•A techno-economical analysis was performed to determine the cost-saving potentials.•Capacity planning was highly prioritized, considering energy, economy, environment and grid dependence.