Interest in small wind turbines is continuously growing due to rising energy costs and sociopolitical goals to limit climate change. More and more homeowners and businesses are discovering the topic and considering purchasing a small wind turbine to contribute to climate protection and become more independent from traditional energy suppliers. The enormous product diversity and the wide range of different technical concepts and designs on the market impressively underscore this trend.
How small wind turbines work
Anyone considering purchasing or acquiring a small wind turbine should inform themselves thoroughly about the different designs and technologies beforehand. It is recommended to purchase a complete small wind turbine, as this ensures that all components, such as the nacelle, rotor, and tower, are perfectly coordinated. Small wind turbines are sustainable technologies that generate clean, CO2-free energy from wind. They capture the wind's kinetic energy with the help of the rotor and convert it into mechanical energy. This energy is then converted by a generator into electrical energy, which can be used for internal consumption or fed into the power grid. Small wind turbines are of great importance for a sustainable energy supply because, like photovoltaics, they generate electricity in a decentralized and consumer-friendly manner, reducing the use of fossil fuels and lowering the emission of climate-damaging greenhouse gases. Small wind turbines differ from large wind turbines in terms of size, power output, and applications. They are used for decentralized, on-site power generation, while large wind turbines are designed for feeding into the power grid and achieve significantly higher outputs. A complete small wind turbine kit consists of the rotor, generator, tower, yaw system, and control system. The quality of the individual components and their optimal coordination are crucial for efficient and smooth operation of the system. Analogous to the development processes of megawatt and multi-megawatt systems, systematic design processes, aeroelastic simulations, wind tunnel measurements, FEM component studies, and FMEA system analyses were used in the design of TWE's small wind turbine. To optimally utilize the wind potential, TWE uses a two-stage generator, a flow-optimized rotor blade profile, active yaw system, and an intelligent control system to ensure high-quality power generation. As with large wind turbines, the TWE small wind turbine continuously measures wind direction and speed and optimally aligns the nacelle to the wind using a motor. The rotor blade profile and a unique single-frame housing, which integrates noise-generating components such as the generator and gearbox, ensure very low noise emissions.
Advantages of small wind turbines
Small wind turbines generate clean, renewable energy without emitting climate-damaging greenhouse gases or other environmental pollutants. They actively contribute to climate protection and help reduce the environmental impact of conventional energy sources. Decentralized energy generation means energy is generated where it is consumed. This ensures a more efficient, sustainable, and flexible energy supply. Furthermore, energy losses that occur during transport over long transmission lines are minimized, increasing consumer independence. Small wind turbines can provide energy cost-effectively and economically because they utilize an inexhaustible energy source and can therefore offer stable energy costs in the long term. The decisive factors for the economic viability of a small wind turbine are the wind conditions at the site, a high-yield wind turbine, and a high self-consumption rate. They enable users to generate their own electricity economically and become less dependent on conventional energy suppliers and rising energy prices. Furthermore, government subsidies and incentive programs can reduce investment costs and further improve profitability.
Site selection and installation
A careful site assessment is crucial for the various application areas, as it significantly influences the efficiency and cost-effectiveness of the system. Criteria such as wind conditions, land availability, and distance from surrounding obstacles must be carefully examined in advance. Furthermore, legal requirements such as building permits, environmental regulations, and distance regulations must be observed. Since there is no uniform federal regulation for small wind turbines in Germany and the individual federal states have different building regulations and standards, coordination with local building authorities is important. The construction and integration of the TWE small wind turbine takes place in several steps. Based on a positive site analysis, preparatory work is then carried out at the installation site. The stability of the small wind turbine is also determined by the foundation of the turbine tower in the ground and requires a detailed soil investigation, on which the foundation is then constructed. After the foundation is completed and hardened, the system components are assembled. At TWE, this is carried out at ground level. After the tower elements are assembled, the generator, rotor blades, and then the nacelle fairing are attached. The next step involves electrical wiring for the small wind turbine and integrating it into the site's electrical system. After assembly and installation, the small wind turbine is tested to ensure that all components are functioning properly. Adjustments to optimize performance are also made during this phase. After the turbine is connected to the grid, it is handed over to the customer. To ensure a smooth and efficient construction process, the installation and integration of the small wind turbine should be carried out by experienced professionals, and compliance with safety standards should be observed.
Maintenance and operation
Like any other technical system, a small wind turbine requires regular maintenance to ensure its performance and reliability. This includes inspections of the rotor blades, electrical components, and screw connections. Thanks to the compact design with a single-frame housing, the TWE small wind turbine requires minimal maintenance. With the help of a lowering system, this maintenance can be carried out safely at ground level by TWE or trained specialists. Furthermore, it is possible to monitor the small wind turbine completely remotely via an internet connection.
Challenges and limitations
Purchasing a small wind turbine can present several challenges, such as assessing uncertainties regarding economic viability, site evaluation, and legal and technical considerations. Technical limitations and efficiency issues can affect the performance and reliability of small wind turbines. Before purchasing a small wind turbine, you should conduct careful planning to minimize these issues. This should also consider the acceptance of small wind turbines by residents and neighbors. Therefore, it is recommended to consult with your neighbors before constructing a small wind turbine to discuss any potential concerns openly and transparently.
Future prospects and trends and conclusion
Small wind turbines can make an important contribution to the energy transition by providing clean, renewable energy and reducing dependence on fossil fuels. They help achieve climate targets and can support a sustainable energy supply. Their benefits range from climate protection and cost-effectiveness to independence from external energy sources. Small wind turbines are enjoying increasing popularity. They enable individuals and companies to actively participate in the energy transition, increase their energy independence, and make a long-term contribution to reducing CO2 emissions. The decision to purchase a small wind turbine should be based on solid planning, as the planning process is more complex than, for example, for a photovoltaic system. If you are interested in purchasing a small wind turbine or are interested in a small wind turbine, contact us today to learn more about our products and services.
