Abstract: Using 10-minute wind speed data from two wind towers located at the Yangmei Mountain wind farms in Yunnan from 2011 to 2013, we calculated two new parameters for wind energy resource assessment: equivalent wind speed and available wind power density. These parameters were put forward by Yang Zhen-bin. The two new parameters were compared to the average wind speed and the average wind power density respectively. The results showed that the equivalent wind speed was smaller than the average wind speed. The wind speed frequency distribution was relatively concentrated and it' s energy index tended to the fact. The available wind power density was relatively smaller than the average wind power density used by a wind turbine.Our analysis showed that the two new parameters have application value in the Yunnan wind farm for wind energy resource assessments.