Hybrid Storage Solutions for Offshore Wind Farms: A study considering the WindFloat Atlantic

10 de dezembro de 2025

The integration of large scale renewable energy into electric grids is essential for achieving global decarbonization targets. However, the intermittency of wind resources poses significant operational and economic challenges. This thesis investigates the techno-economic feasibility of incorporating energy storage technologies, namely green hydrogen and lithium-ion batteries, into offshore wind farms, using the WindFloat Atlantic project in Portugal as a case study. A dynamic, rule-based dispatch model was developed to optimize the allocation of wind energy among grid injection, battery storage, and hydrogen production, based on real hourly data of electricity prices and wind generation. The model evaluates economic indicators such as Net Present Value (NPV), complemented by sensitivity analysis on hydrogen selling prices, system sizing, and market conditions. Results reveal that while hydrogen systems are currently constrained by high capital costs, they become viable for selling prices above 6.5 e/kg, particularly when coupled with high-capacity storage tanks. In contrast, battery systems provide rapid short-term flexibility but remain economically limited by capital expenditure. The hybrid configuration (HybESS) demonstrates improved energy utilization and reduced curtailment, combining the short-term efficiency of batteries with the long-term storage capability of hydrogen. These findings contribute to understanding how hybrid storage can enhance the reliability and profitability of offshore wind integration in future renewable-based energy systems.

Autores da comunidade :

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  F

  Francisco Peixoto Pereira

  ist198628

Orientadores desta instituição:

• 

  R

  Ricardo Balbino Santos Pereira

  ist151719

mechanical-engineering - Engenharia Mecânica

por - Português

Instituto Superior Técnico