Green Hydrogen. Renewable Energy. Offshore Wind Energy. Techno-economic and Environmental Analysis. Viability study

The decarbonization of the energy sector and the reduction of greenhouse gas emissions represent the main objectives of the energy transformation roadmaps. Considering that, renewable energies play a key role in world’s energy transition. However, the availability of these alternative energies varies over time and additional measures are needed to integrate fluctuating sources of renewable energy. The production of Green Hydrogen from the Offshore Wind source represents a complementary alternative for energy security supply, especially considering Brazilian’s wind energy capacity factors of up to 50.0%. Because it is an alternative and recent technology, research on its implementation is still lacking. Thus, this research aims to propose a techno-economic and environmental conceptual framework for green hydrogen production from offshore wind energy. The methodological procedure of the research consists of four phases: first, a theoretical foundation, Systematic Literature Review and case studies were conducted. Second, formulation of the conceptual model. Third, validation of the conceptual model. And the fourth, framework modeling. At SLR, 69 articles were analyzed, in addition to theses, dissertations and technical reports. As a result, 38 variables were identified and the conceptual model were systematized, grouped by similarity, considering the life cycle of a unit producing green hydrogen from offshore wind energy. The conceptual framework is divided into technical variables (wind farm, electrolyser and hydrogen), economic variables (costs, indicators, parameters and revenues) and environmental variables. In conclusion, the conceptual framework model for economic analysis of green hydrogen projects from offshore wind energy considers technical, economic, and environmental aspects as input data, as well as serving as a basis for more robust studies for the development of technical-economic feasibility studies for Green Hydrogen projects from Offshore Wind Energy.