Although Egypt is not characterized by abundant Cenozoic igneous activity, its location in the northeastern corner of the African plate suggests that it may possess geothermal resources, especially along its eastern margin. The Eastern Desert of Egypt characterizes by some geothermal potential fields particularly adjacent to the Red Sea. Although the western part of Egypt (Western Desert) has low regional temperature gradients, there are many wells with deep artesian aquifers which represent a low-temperature geothermal resource (35-40°C). In addition, the eastern shore of the Gulf of Suez consists of the hottest springs, including Ain Sokhna, Ayun Musa, Ain Hammam Faraun and Hammam Musa. These areas along both shores of the Gulf of Suez are the most promising for geothermal development. Many geothermal explorations were carried out in Egypt using geophysical and geochemical techniques. Recently obtained data indicates a temperature of 120°C or higher may be found in the reservoir located adjacent to the Gulf of Suez and Red Sea coastal zone. A conceptual model was constructed for the Hammam Faraun hot spring on the eastern side of the Gulf of Suez, which is the hottest spring in Egypt. The model shows the heat source of the hot spring is probably derived from high terrestrial heat flow and deep fluid circulation controlled by faults associated with the opening of the Red Sea and Gulf of Suez rifts.
Indonesia is one of the largest geothermal resource potential countries in the world, with a total energy potential of about 27.5 GWe. Of this energy potential, only 988 MWe or less than 4% was used for electricity generation in 2007. In the first decade of geothermal electricity generation (1980-1990), only Kamojang Geothermal Field was developed. In the second decade (1990-2000), geothermal fields producing electricity were Salak Geothermal Field, Darajat Geothermal Field, Dieng Geothermal Field and Sibayak Geothermal Field. In the early third decade, the power plants were installed in Wayang Windu Geothermal Field and Lahendong Geothermal Field. Direct use of geothermal energy for agriculture products began in the third decade. The acceleration of electricity production from the geothermal potential in the third decade (2000-2010) was planned by the road map of geothermal development. For rapid promotion of geothermal energy development, the Indonesian geothermal industry and government need detailed information of the geothermal fields to meet the expected demand.