The difference between a renewable's nameplate power output (it's kilowatt hours) and its actual capacity factor (the percentage of time it produces that power) is a little-discussed feature of most wind turbines.
It is not always made clear to the consumer, for example, that a standard 5kW Horizontal Axis Wind Turbine (HAWT) may only be productive for 20% of the time in the ideal winds it was designed for. If those ideal winds are a rare 30km per hour, your maximum production on that turbine will also be rare. It can be a real shock to customers who get their product set up only to realize it does not provide their power needs as expected.
