Supporting green hydrogen planning through spatial multi-criteria and technical potential analysis

This study assesses the suitability and technical potential for green hydrogen production in Minas Gerais, Brazil, using a spatially explicit framework. By an Analytic Hierarchy Process, the suitability across 66 microregions is evaluated by applying four main criteria and 22 subcriteria that encompass environmental, resource, infrastructure, and socio-economic factors, weighted by expert judgment. In parallel, the study estimates green hydrogen production potential based on renewable electricity availability from solar, wind, biomass, and residual sources, considering electrolysis. The results indicate a total technical potential of approximately 46 Mt H 2 per year, largely dominated by solar energy (86%). Environmental restrictions emerge as the most influential factor in territorial suitability, often outweighing resource availability. Northwestern microregions show higher suitability, while some resource-rich areas remain constrained by environmental factors. Overall, regions with higher suitability align with higher production potential, highlighting the need for integrated planning approaches.