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Large reductions in carbon dioxide (CO 2 ) emissions are needed to mitigate the impacts of climate change. Electric power plants and refineries were the largest CO 2 emission sources in Algeria. One option to reduce CO 2 emissions is carbon dioxide capture and storage (CCS), which can be used to generate electricity with processes of geothermal heat extraction. The objective of this study is to analyse the spatial distribution of CO 2 emission sources, and to identify the most suitable locations for integrating this technology. For these suitable locations, dioxide carbon emissions were quantified. This quantification is used to evaluate the potential for both electric and hydrogen production and to estimate the levelized cost of electrolytic hydrogen. For this reason, Geographical Information System (GIS) based methodology with combining several criteria is used. These criteria include spatially varied CO 2 emission sources, potential geothermic and demand of electrical energy (considering the existing production sources and the consumption of electrical energy for each city). GIS is used for creating new multi-layer information. It also offers a highly flexible, easily updateable database and display tool that facilitates the spatial analyses. As a result, the most suitable areas were located extensively in northeast and southwest part of Algeria. The northeast site was characterised by geothermal gradient of 6 °C/100 m and has the most important electric and hydrogen potential, while in the second site the electric and hydrogen production is low than the first. In addition, the cost of hydrogen production at the northeast site is more competitive. [ABSTRACT FROM AUTHOR]

In recent years, Algeria has intensified its efforts to diversify its resources and ensure environmental sustainability by the implementation of energetic and economic policies and strategies. The integration of hydrogen into the road transportation sector as fuel can help country to meet its policy goals. Using the combination of spatial data in a Geographic Information System (GIS) with a techno-economic models, this paper presents an analysis of hydrogen demand from hydrogen vehicle in Algeria by 2045. The costs associated with hydrogen production via water electrolysis-based renewable sources, CO 2 emissions, and the environmental benefits under two scenarios are also presented. The results of this study show that the annual amount of hydrogen demand would be 945.5 thousand tons H 2 through 2045. Where the capital, Algiers represent 26% of national demands. The average levelized cost of hydrogen for the solar-based hydrogen, is in the range of 5 $/kg to 0.9 $/kg. Whereas, the average levelized cost of hydrogen for the geothermal-based hydrogen decline from 4.66 $/kg to 3.54 $/kg by 2045. A remarkable CO 2 reduction is achievable; the environmental savings is estimated at 158.8 million tons of CO 2 . [ABSTRACT FROM AUTHOR]