This paper presents an evaluation approach for wind energy harvesters based on annual wind velocity measurements. The proposed method facilitates the selection of an optimal device tailored to specific wind conditions. The research was conducted on two harvester designs: one utilizing a double magnet configuration and the other using Halbach arrays. Five types of wind velocity distributions were examined to assess maximum power production. The Rayleigh distribution was employed in the analysis for wind velocities ranging from 3 m/s to 7 m/s. Measurements of energy production, energy production density, and annual energy production highlighted the suitability of the harvesters under consideration. The modified Halbach array, where the tip mass was reduced by altering the support of the magnet and coil, proved to be the most effective compared to the original design and the double magnet configuration. The novelty of the proposed approach lies in its ability to evaluate the productivity of various wind harvesters, enabling the selection of the most effective energy producer.