Wind is everywhere. Even in the city. Why not use its energy? Wind turbines on the roofs of houses are not science fiction, but a reality of 2026. They are installed more and more often in Europe and the USA. In Russia, it's still rare, but interest is growing. We tell you how it works, how much it costs, and whether it's worth it. How a roof-mounted wind turbine works A wind generator converts kinetic energy of the wind into electricity. Vertical turbines (rotor Darrieus, Savonius) are usually installed on the roof (the axis of rotation is vertical). They are not as bulky as horizontal ones, do not require rotation to the wind, and work at low wind speeds (from 2 m/s). The blades are quiet (noise up to 35 dB — quieter than a conversation). The turbine is connected to the home network through an inverter. Electricity goes to household needs. Excess electricity can be sold to the general network (green tariff). Power of residential wind turbines: 1-10 kW. Types of roof-mounted wind turbines Vertical (Darrieus rotor, Savonius) — the most popular for roofs. They work in any direction of the wind. They are not afraid of gusts. They can be decorative (in the form of a flower, a spiral). Horizontal (propeller) — installed rarely (a high mast is needed to not hit neighbors). Noisy, require orientation to the wind. Hybrid (wind turbine + solar panels) — together they produce more energy, especially in cloudy-windy weather. Advantages Economy: free energy after payback. Ecology: no CO2 emissions. Independence: the turbine works even during power outages (there are batteries). Silence: modern models are almost inaudible. Durability: 20-25 years. Can be an element of design (futuristic shapes). The turbine also reduces the load on the network during peak hours. Disadvantages Dependence on the weather: no energy in calm weather. Batteries are needed (expensive, up to 50% of the cost). Initial costs: turbine + inverter + battery + installation — from 300,000 ru ... Читать далее