Geothermal Exploration in Eritrea Country Update
[Department of Mines, Eritrea]
Eritrea relies its electric generation totally from imported refined petroleum products, which is based on oil burning products. In 2017, a 42MW have been added to the existed installed power capacity to become 195 MW. The capacity is not enough as development mainly in mining, agriculture and industry sectors are planned to increase. Therefore harnessing the geothermal potential has a significant impact on the economic development of Eritrea. The impact can be viewed both the unreliable cost fluctuation mainly increment of fuel cost coupled with the unfriendly environment. Therefore geothermal energy will have an important input in alleviating expenditure on foreign currency while safeguarding the environment. The tectonic setting and geological makeup of the Danakil region of Eritrea is a favourable site for having geothermal resources that are potential for the development of geothermal resources mainly for electrical generation and geothermal utilization. Alid and Nabro-Dubbi fields are the notable places with ample geothermal manifestations. The completion of some of the surface studies on Alid prompts here to concentrate on the recent work performed. A more than 2250C reservoir temperature was estimated using gas geothermometers from Alid geothermal prospect. The resistivity survey that was conducted recently has availed an interesting anomaly at the rift floor and opened a wider perspective in exploration. The 2011 eruption in Nabro-Dubbi signifies that the area is still an active magmatic zone. The old surface manifestation has covered by basaltic flows and ashes. It is to be noted that other high geothermal manifestation also occur in Jalua volcanic complex but needs exploration study. There are considerable low temperature-thermal springs potential for recreation spas, health and mineral water bottling, and etc, occur at around the Asmara-Massawa highway, close to Gulf of Zula and within the Danakil Depression, which mostly do not show any immediate association with recent magmatism. Gravity and microseismic studies and soil-gas surveys are planned to complete surface exploration studies in late 2019 in Alid, so that sites for drilling will be selected.
|        Topic: Country Updates||Paper Number: 01021|