en Distributed Generation/Integration of Renewables Distributed Generation/Integration of Renewables Research Paper Research Paper <span style="font-size:10pt"><span new="" roman="" style="font-family:" times=""><span style="color:black">This paper presents an effective approach for determining optimal integration of renewable energy distributed generator (RE-DGs) of solar farms (SFs) and wind farms (WFs) in IEEE 69-node power distribution network (PDN) with target of minimizing (1) the single objective function of total active power loss and (2) multi-objective function including a) total active power loss, b) total reactive power loss, c) the voltage deviation and d) imported energy from the main power gird. Intelligent and adaptive meta-heuristic optimization algorithm called bonobo optimizer (BO) is introduced to address optimization problem considering the changing four seasons of winter, spring, summer and autumn from both generation and consumption. The obtained results from BO show its outstanding performance in determining the suitable installation of SFs and WFs compared with many published methods and implemented methods for two cases of single and multi-objective functions.</span></span></span> Solar farms, Wind farms, Bonobo optimizer, Total power loss, The voltage deviation. 147 163 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-5498-1&slc_lang=en&sid=1 Nguyen Nhat Tung tungnn@tlu.edu.vn 1800319475328460017247 1800319475328460017247 Yes Faculty of Electrical and Electronics Engineering, Thuyloi University, Hanoi, Vietnam.