sentences:  These sites offer higher wind speeds, in the range of roughly 8.5–9.0 m/s at 50 m height.There have been no major problems from wind variability, although there is a temporary problem resulting from the connection of a large bloc of wind power from offshore wind farms to a single point on a weak section of the transmission network.The wind resource over Denmark was mapped in 1999 by EMD International A/S and Risø National Laboratory.