# Wind Turbine Energy Yield Calculation at a Given Site

1. Jul 1, 2012

### Ktulu

1. The problem statement, all variables and given/known data

I need to find how much energy will be produced (at least approximately) at a site with the following characteristics (this is taken from the German Renewable Energy law):

“The reference site shall be a site determined by means of a Rayleigh distribution with a mean annual wind speed of 5.5 metres per second at a height of 30 metres above ground level, a logarithmic wind shear profile and a roughness length of 0.1 metres.”

2. Relevant equations

How can I find out how much energy can be produced at such a location? What other information do I need? I am especially interested in what Rayleigh distribution implies here, and how I can use this information