The Danish "Energistyrelse" (Official Energy Department) gives us the correct figures of the windmills here:

http://www.ens.dk/sw14080.asp

That's the first link I provided above. Do you have any issues with the numbers I provided? If so, do you understand why the 2.6% figure you quoted is misleading?

The fact that Denmark only uses about 50 % of the current produced by windmills is proved here:

http://www.reo.dk/

I'm afraid I don't speak Danish, so can't read that site. It appears to be a pro-nuclear website that has a subscription.

I would not be surprised if Denmark directly used 50% of their wind power and indirectly used the rest when buying back from hydro plants in other parts of Scandinavia. Wind and hydro go well together, as excess wind can be 'stored' via offsetting or actual increase in the hydro reservoir, and then used when demand is higher than the current wind supply. Even excess nuclear power in the region is stored during the night in hydro for resell during the day.