No matter how powerful a generator is, the wind speed must be 3 to 20 m/s to produce electricity. What affects power is the length of the wind turbine blades.
To operate a 10 kW generator stably, there must be a wind speed of 6-10 m/s, especially a strong wind of level 5 or above.
The key is that wind power is very unstable (now large and sometimes small), so ordinary generators will be fried.
For wind power generation, the concept of the number of wind power levels used is too approximate. Due to the different capacities of the generators, the wind speed requirements are also somewhat different. However, generally, if the wind speed exceeds 3 m/s, the wind turbine can produce electricity. However, wind energy production does not depend on the local wind speed, but on the duration of operation.annual operation of the local wind farm which produces electricity for this wind turbine. Based on the current wind power subsidy price set by the state, if the electricity generation duration is less than 2,000 hours that year, there will be no profit.