Abstract
Climate change and environmental degradation are an existential threat to the world. To overcome this problem on 11 December 2019 the European Commission presented the European Green Deal, that has the objective to reduce the greenhouse gas emissions by at least 55% by 2030, and to reach complete carbon neutrality by 2050[1]. Green hydrogen could have a critical role in reaching this objective for its versatility as it can be used mainly as a feedstock, in ammonia production, for transportation (marine and aviation), in industry and to a smaller extent for power generation and heating [1][8]. The OPEX (operational expenditure) and CAPEX (capital expenditure) values of an electrolyser plant are expected to drop due to this political support from the European Commission's decision and continued technological development, leading to a possible scenario in which the cost of hydrogen per kg could compete with conventional fuels (1.5-3 euro per kg [2]).