Since Indonesia is composed approximately of 13,700 islands, extending over 5,100 km from east to west. a nationwide electrical transmission network is not realistic, especially in remote islands. However, lots of the islands are of volcanic origin, and they have geothermal potential to produce green power. The Indonesian Government is promoting to construct small-scale geothermal power stations in those remote islands through the Rural Electrification Program. This project aims to develop a geothermal exploration system suitable for tropical remote islands, and consequently to contribute to the Rural Electrification Program of the Indonesian Government. Based on the preliminary survey by the VSI, Mataloko, central Flores Island was selected for the project site. Various geo-scientific and technological methods have been applied to the geothermal system in Mataloko and its surrounding area to construct an exploration system effective for the tropical remote islands. At the final stage of the project two shallow holes were drilled to verify a geothermal model constructed by using of the exploration data. The steam production test was successfully carried out to confirm the geothermal reservoir under the project site.