Logical Analysis on the Strategy for a Sustainable Transition of the World to Green Energy—2050. Smart Cities and Villages Coupled to Renewable Energy Sources with Low Carbon Footprint

This paper brings, as an element of novelty and originality, a strategic feasibility study, in the form of a logical analysis related to the proposed objective, with particularization to the area of the EFTA plus the UK and Ireland. We tried to achieve an overall picture of a sustainable and prudent transition at the macroeconomic level, but also at the microeconomic and local levels, with specific values of ecological and energy-smart villages/towns. The convergent actions of the signatory states of the climate treaty COP-26/2021—Glasgow, UK are to improve the logistics and financing of the large-scale replacement of fossil fuels used in the economy and lives of human society. Various strategies have been discussed to address the energy mixes that could be used in the transition phase in stages and combined-cycle natural-gas plants, conditioned by the implementation of CCUS technology. The preliminary stage will focus on the provision and implementation of modern technologies for the production of electricity in photovoltaic and wind power. Starting with the 2030s, the industrialized production of blue and green hydrogen is expected; the first is expected to be obtained from the chemical synthesis of natural gas with the separation and storage of residual carbon from chemical reactions, and the second directly from ocean water through the phenomenon of H2O electrolysis. As a basic legislative element, the strategy aims to refine the idea of a carbon tax at the border or at the user, in order to discourage the use of fossil fuels.