The larger the pressure difference the greater the wind velocity. Energy storage is probably more critical for wind power than for any other form of alternative energy. KILO watts per square meter which is 600 watts per square meter this is identical to average solar power per square meter at our latitude. You only need to know the v 3 to do this. In most all cases, the efficiency of the wind turbine depends on the actual wind speed.
High torque means efficient operation at low wind speeds.
If wind blows 24 hours per day then annual electricity generated would be about 2200 KWH per sq. KHW per sq.