Development of semi-integrated solar street lamp for rural area Tomy Abuzairi, Kresna Devara, Ananta Rezky, Andrew Bastian, A.R. Wing Wira and Arief Udhiarto E3S Web Conf., 67 (2018) 01016 Published online: 26 November 2018 DOI: 10.1051/e3sconf/20186701016