The wind speed regimes of Yelwa, Sokoto, Kano, Kaduna, and Gusau in Northwestern Nigeria were assessed for their wind energy potential at heights of between 30m and 80m using the ReliaSoft Weibull++ 7 software and the Wind Power Calculator. Only three stations (Sokoto, Kano, and Gusau) show very reasonable potential at these heights. The least values of annual energy output obtained at these heights for these three stations were: Kano- 4979 MWh at 28% capacity factor (cf), 1413 MWh at 16% cf and 1093 MWh at 21% cf; Sokoto - 3260 MWh at 19% cf, 917 MWh, at 10% cf and 680 MWh at 13% cf; and Gausau - 1895 MWh at 11% cf, 545 MWh at 6% cf, and 347 MWh at 7% cf. The cost analysis showed least values of net present value and internal rate of return under 17% per annum real interest rate of $162086.11 (N20, 909,108.19) and 22.29% per annum, respectively at a cost of $0.093/kWh (N 12/kWh).
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