It’s definitely not per 1000 words. Each place I’ve seen the prizes listed, it’s specified that it includes spaces.
I guess I should read the full standard contract, though, see if that sheds more light on anything.
Incidentally, I saw some official figures for average yearly salaries for fully employed translators, putting them between 400k-500k NOK per year. Helping to muddy those figures, though, is the fact that they seemed to lump translators together with interpreters, and it really wouldn’t surprise me if the latter get paid significantly more than the former.