Techno-Economic Assessment of Hybrid Renewable Energy Systems for Residential Complexes of Tabriz City, Iran

Tabriz, Iran possesses abundant renewable energy sources like wind and solar energy. Residential complexes in Tabriz consume significant amounts of electrical energy. Most of this electricity is generated by non-renewable energy resources, which results in significant air pollution. This research provides a techno-economic evaluation of hybrid Renewable Energy Systems (RES) for three residential complexes located in Tabriz. Each complex contains three optimum cases (overall nine cases). Proposed hybrid systems require the lowest NPC and COE. First, generators are removed from RES for all nine cases (100 percent RES). The structure of these cases were PV, Wind-PV, and wind with converter and battery. Secondly, due to the affordable price of diesel in this region, diesel generation is added to RES of all cases to explore more feasible and affordable optimized hybrid systems. The structure of these cases were Wind-Diesel-PV, Wind-PV, and Wind-Diesel, and Diesel-PV with converter and battery. Technical and economic assessment of optimized systems is performed by means of HOMER software. The main purpose of optimized systems is to meet the load demand. The electricity load of the study area has been obtained by means of electricity bills. Average load demand and peak load of complex one, two, and three were 7972, 3991, and 2960 kWh/d and 1122, 562, and 417 kW respectively. The goal of the current research is to explore the possible usage of the optimized hybrid RES by means of economic and technical parameters. In the optimized configurations with 100% Renewable Energy System, it was interpreted that PV with Wind is fully practicable. In addition, the COE for Battery-Wind-Diesel-PV HES arrangement is minimum for entire complexes. The optimized systems with 100% RESs remarkably reduces harmful emissions.