You obviously know about the 'Mail' mjshackl. Thanks for backing...

You obviously know about the 'Mail' mjshackl. Thanks for backing me up on that one.

Hotcopperinvest, wind farm developers monitor wind speeds and frequency for at least a year on site prior to installing wind turbines. Often the wind monitoring equipment is up for 2-3 years before the wind turbines are installed. Hence, it is known what the the likely return is going to be prior to them being installed. Here in Scotland where I am based the capacity factor of wind farm is typically 30-35%. Capacity factor should not be confused the percentage of time that wind farms generate power, which is typically 75-85% of the time.