Abdillah, N., Setiawan, A. A. and ., S. (2015) “Redesigning Solar Water Pumping System at Giricahyo, Gunungkidul Regency, Yogyakarta: HOMER Analysis Approach”, KnE Energy, 2(2), pp. 132- 140. doi: 10.18502/ken.v2i2.368.