Patent ID: 7403854

Claim:
A method for determining wind farm electricity production, the method comprising the steps of: a. identifying a wind farm test site and a corresponding reference site for which historical meteorological data is available; b. collecting meteorological data sets representative of wind speed and direction for both of the test and reference site for a specific time period; c. sectorising the collected data sets for each of the reference and test site into two or more direction sectors representative of the wind direction comprising establishing a wind veer quanta representative of offsets in wind direction between wind data collected proximate in time at each of the test and reference sites; d. for each direction sector sorting the wind speeds within that sector into a ranked order so as to provide a sorted data set for each sector of each of the reference and test sites; e. establishing a relationship between the sorted data sets in corresponding test and reference site sectors; f. using the established relationship to provide an estimation of future meteorological conditions at the test site; and, g. using the estimation of future meteorological conditions at the test site to determine the electricity production for that site.