Techno-Economic Assessment for Collaborative Offshore Wind and Electricity-Hydrogen System in Coastal Provinces of China

The coordinated development of offshore wind and electricity-hydrogen systems (OW-EHS) has the potential to enhance the utilization of renewable energy sources and achieve carbon neutrality. In this paper, a multi-stage stochastic dual dynamic programming approach is proposed to assess the in- tegration of OW-EHS considering the uncertainties in offshore wind. The study explores offshore wind energy not only as a primary source of electricity for coastal regions but also as a clean and sustainable energy for electrolyzers. Four scenarios are designed to analyze the economic advantages and hydrogen production potential across nine coastal provinces in China. The findings underscore the efficacy of the proposed planning approach, demonstrating its capacity to maximize the overall system benefits, encompassing both the levelized cost of energy and hydrogen production.