Do wind turbines need wind?
Simply so, do Wind Turbines work when there is no wind?
As has been mentioned, without wind they don't work. On the other hand it only takes a light breeze, enough to start wind vanes and leaves stirring, to also start generating at least some power, and it's extremely rare for there to be no wind at all throughout the UK.
Hereof, what wind speed do wind turbines need?
Generally, annual average wind speeds greater than four meters per second (m/s) (9 mph) are required for small wind electric turbines (less wind is required for water-pumping operations). Utility-scale wind power plants require minimum average wind speeds of 6 m/s (13 mph).
The two major disadvantages of wind power include initial cost and technology immaturity. Offshore wind energy produces more energy than onshore wind energy, but costs much more to establish. The primary costs of wind turbines include construction and maintenance.