Challenges for green hydrogen development

The paper underlines the challenges for hydrogen developments with special reference to green hydrogen production and electrolyser behaviour. The present and future 2050 production, consumption, uses and costs are reported as based on the scenarios of international agencies. The Levelised Costs of Hydrogen (LCOH) computed for 2020, 2030 and 2050 by the authors are reported in representative graphs. Some considerations are given to the utilisation of existing methane transport infrastructure with partial blending with hydrogen or with 100% hydrogen. Some concepts on transport of hydrogen versus electricity are outlined