On average, a 10kw wind turbine can generate approximately 20,000 kWh (kilowatt-hours) of electricity per year. This estimate assumes an average wind speed of 12 mph, an efficiency of around 35-45%, and a suitable location with favorable wind conditions. Several factors contribute to the. With its higher energy output, the 10 kW wind turbine is ideal for larger off-grid homes, farms, and small commercial applications. From my experience managing utility-scale wind projects, I've consistently observed that site-specific factors—such as average wind. Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity.