The wind energy potentials of the Jilin Province,China,is estimated by means of certain algorithms and procedures for wind turbine siting,digital terrain maps and digitalisation of surface roughness on the basis of certain land use maps.For the necessary meteorological input data only such were used easily available from the ordinary meteorological network.On a grid of nearly 1km × 1km the mean annual wind speed and the wind power density 60 m above ground level were mapped.Generally, the most favourable wind resources are found in the central and western part of the province.High wind resource areas in the southern and eastern part are located on ridges or crests and mountain summits.