Practical Guide to Estimating Power Output and Costs of Small Wind Turbines

Abstract

This study presents a user-friendly and quick estimate for the expected power output and costs associated with micro-scale wind turbine generation, aimed at simplifying and facilitating the engagement of non-specialists with the technical complexities of wind turbine technologies and terminologies. The analysis encompasses several critical parameters of small-scale wind turbines, including rotor diameter, cut-in velocity, and rated power, assessed against varying wind velocities at the prospective installation sites. To utilize this estimate, users need only to determine two key factors: the required power output in kilowatts (kW) and the annual mean wind velocity at the intended installation height. This is applicable to both roof-mounted and tower-mounted micro-scale wind turbines. By identifying these two factors, users can easily select the appropriate wind turbine(s) to meet their energy needs, including determining the necessary power capacity and the number of turbines required. The estimate also provides a general cost guide, including related costs and considerations for turbine cut-in velocity and rotor diameter, which indicates the space required for installation. The estimation method is grounded in the Weibull statistical model, which offers three scenarios of power generation: optimistic, most likely, and pessimistic. This range of scenarios ensures that users have a comprehensive understanding of potential outcomes based on varying wind conditions. This practical and accessible estimate is designed to serve as a valuable resource for non-specialists involved in residential, educational, and small commercial applications. By demystifying the technical aspects of micro-scale wind turbine generation, the study aims to empower a broader audience to make informed decisions about renewable energy solutions. The detailed examination of rotor diameter, cut-in velocity, and rated power against different wind velocities provides a thorough foundation for understanding the capabilities and limitations of small-scale wind turbines. Moreover, the emphasis on user-friendly guidance ensures that even those without specialized technical knowledge can navigate the complexities of selecting and installing micro-scale wind turbines. The scenarios provided by the Weibull method allow users to anticipate different levels of power generation, helping them to prepare for a range of possible outcomes and to plan accordingly. The study's approach balances technical rigor with accessibility, making it an invaluable tool for expanding the adoption of wind energy in various settings. Ultimately, this estimate serves as a bridge between sophisticated technical knowledge and practical application, offering a simplified yet comprehensive guide to micro-scale wind turbine generation. By focusing on the essential parameters and providing clear, scenario-based estimates, the study facilitates the integration of renewable energy solutions in everyday contexts, promoting sustainable energy practices among a diverse audience.