It's an original theme, intensely and eloquently described, at reasonably short length (220 pages). I'm really surprised that I had not heard of it before I started my research into the sf of 1940 for next year's Retro Hugos. It seems to me to stand firmly in the tradition of Zamyatin's We, Huxley's Brave New World and Orwell's Nineteen Eighty-Four. Presumably the twin effects of it being in Swedish and by a woman meant that it was overlooked. The 2002 film Equilibrium picked up some of its ideas, as of course did Zelazny's Today We Choose Faces and the first episode of Blake's 7.
The whole thing can be read online here. I do hope that voters will give a nod to a Scandinavian writer in advance of Helsinki.