## 6 Results and Discussion  
Wind energy has the most cost competitive technology in the various renewable energy markets. The onshore wind segment is the most common and used; however, considering the advantages of the offshore environment, this has been an option in recent years. It was concluded that the main motivations for prospecting in the marine environment are the availability and quality of the wind resource at sea, since the space available and unexplored is high and, generally, the winds are stronger and more uniform, allowing the use of larger equipment that raises the level of energy production. Nevertheless, the implementation of offshore technologies is more expensive than onshore, the planningprocess is more complex and time consuming, construction and maintenance require more effective solutions, and the grid connection and licensing process is rigorous. Regarding the type of technology for offshore wind energy production, it was found that fixed-bottom turbines represent the most evolved and have been the most used to produce this type of energy. However, the industry has begun to invest in the implementation of floating turbines, which offer a potential for expansion into viable and economically attractive areas. In relation to Portugal and considering the topographical characteristics of the Portuguese coast, it was considered that this is favorable to the implementation of offshore systems, especially for floating type offshore wind energy. The literature review showed that there was an increase in the sector's competitiveness and, consequently, an increase in competition, which has converged on a reduction in the sales prices of the various products, resulting in a movement of offshore wind energy to new markets, increasing the sales of its technologies. Regarding offshore wind turbine manufacturers, Vestas, Goldwind, Siemens Gamesa, GE Renewable Energy, Envision, and Eneron stood out. The market analysis of this type of energy, together with the analysis carried out on the value chain of the company case study (ASM Offshore), led to the conclusion that the Portuguese market in this sector is not competitive with international markets. The development of a cluster of this type of energy in Portugal, with the various companies belonging to each category, could boost its prospects, as well as dispute the growth of other companies associated with the national sector. The importance of clusters in the growth of the renewable energy sector is recognized, since the installation of any system related to this form of energy requires high financial support, technological development, and a competitive structure and strategy. With the development of this type of business partnership, cooperation between various stakeholders is created, both in terms of sharing resources, materials, and equipment, as well as sharing knowledge and other relevant services. It was found that although geographical proximity is an important point in the interconnection of companies that make up a cluster, the success of this type of agglomeration does not depend exclusively on geographical positioning, but also on the conditions of the sector in question, at the competitive level, technological innovation of products/services, and interaction processes between the various parts that make up the business. Regarding the port sector, it was inferred that it plays a fundamental role in the Portuguese economy, since it conceives a support to several activities developed in Portugal. In addition, the port aims at local and regional development, as well as the establishment of interconnection points in the logistics and international transport networks. The Port of Aveiro integrates the main port system in Portugal and benefits from several advantages.