Sustainable business model for off-grid PV electrification in developing country: In the case of Sumba Island, Indonesia

The electrification ratio of Sumba Island has been increased in the past five years from about 24.5% in 2010 to about 43% 2015 in which 55% of the share supplied by renewable energy resources (Hivos, 2015). Despite the progress on electrification ratio, there are still about 238 out of 433 villages which do not have electricity access (PLN, 2017...