## 1 Introduction  
The Republic of Djibouti is located in the Horn of Africa, at the intersection of the Red Sea and the Indian Ocean (Figure 1). Djibouti benefits from a geostrategic position over the world's main shipping road, and it is the natural outlet for the landlocked countries in the region. On the other hand, the Republic of Djibouti is one of several African countries located on the East African Rift System (EARS) (Figure 1). As in other rifting zones, the EARS activity corresponds to large seismic, tectonic, and volcanic activities [1]. This unique geodynamical environment puts the Republic of Djibouti in an excellent position to develop geothermal energy. Indeed, the Republic of Djibouti, one of the few countries with geothermal potential in Africa, is endowed with a substantial amount of this energy, which is found scattered along the Gulf of Tadjourah ridge and the western part of the country (Supplementary Figure S1) [2,3]. However, the most geologically active area in Djibouti is the Lake Asal area, and the AG Rift is one of two emergent oceanic ridges globally, the other being in Iceland [1]. Therefore, several studies have been carried out on the Republic of Djibouti geothermal areas to either select the most favorable geothermal prospects for exploration by deep drilling or estimate their geothermal potential [2, 3, 4, 5, 6, 7, 8]. The Government of Djibouti has established an ambitious long-term development plan to improve energy access and energy security as a primary strategic focus by using alternative energy sources. Indeed, the Republic of Djibouti is endowed with strong potential in terms of renewable energy resources in addition to geothermal energy, such as wind and solar [9; 10; 11; 12]. The plan aims at diversifying energy resources and focusing on renewable energy, which the country is endowed with, such as wind and solar and geothermal energy [9; 10; 11; 12]. Furthermore, the Republic of Djibouti is among the fifteen African countries having the best wind resource potential [13], Wind energy is the world's fastest growing renewable energy technology [14; 15]. For example, [PERSON] et al. [16] used two years of wind data measured at four heights above sea level to determine the wind potential of the southern coast of Pakistan. [PERSON] et al. [17] investigated the environmental, economic, and social impacts of geothermal energy systems. They provided a detailed review of barriers and highlighted options for increasing the global geothermal energy capacity and production needed to meet \"net-zero\" carbon emission goals [17]. In addition to electricity production, wind and geothermal energies can also generate green hydrogen via the water electrolysis process, which consists of splitting the water molecule under the effect of an electric current [18; 19]. Despite the growth of the hydrogen market as a promising energy source, conventional routes for hydrogen production, i.e., from fossil fuels, have negative environmental impacts [20]. However, the power-to-gas concept, based on water electrolysis using electricity from renewable energy sources (wind, solar, geothermal), is the most environmentally friendly approach. Water electrolysis, a mature technique with relatively good efficiency [21; 22], currently accounts for 4% of hydrogen production, but this is expected to expand significantly in the coming years, with a 22% market share projected for 2050 [23]. The primary consumers of hydrogen are the oil refining, metallurgy, chemical, and pharmaceutical industries. The growth of the above-mentioned industries leads to an increase in hydrogen demand. Numerous studies have investigated the integration of  
Figure 1: Locations of the wind measurement towers with topographical elevation (The dashed lines show the Asal-Ghoubbet Rift). renewable energy for green hydrogen production. [PERSON] and [PERSON] [24] performed a comparative assessment of renewable energy-based hydrogen production methods (i.e., Biomass, solar and geothermal).