Renewable Energy Technologies for Economic Development Kamaruddin Abdullah, Aep Saepul Uyun, Rahedi Soegeng, Eri Suherman, Herry Susanto, Roy Hendroko Setyobudi, Juris Burlakovs and Zane Vincēviča-Gaile E3S Web Conf., 188 (2020) 00016 Published online: 08 September 2020 DOI: 10.1051/e3sconf/202018800016