section_path: Wind power capacity and production/Predictability
section_name: Predictability
paragraph_text: Predictability
  
  For any particular generator, there is an 80% chance that wind output will change less than 10% in an hour and a 40% chance that it will change 10% or more in 5 hours.
  
  In summer 2021, wind power in the United Kingdom fell due to the lowest winds in seventy years, In the future, smoothing peaks by producing green hydrogen may help when wind has a larger share of generation.
  
  While the output from a single turbine can vary greatly and rapidly as local wind speeds vary, as more turbines are connected over larger and larger areas the average power output becomes less variable and more predictable. Weather forecasting permits the electric-power network to be readied for the predictable variations in production that occur.
  
  It is thought that the most reliable low-carbon electricity systems will include a large share of wind power.