Thorleif Dahl's prize

The Norwegian Academy Prize in memory of Thorleif Dahl (Det Norske Akademis Pris til minne om Thorleif Dahl) is awarded annually by the Norwegian Academy for Language and Literature (Det Norske Akademi for Sprog og Litteratur). The prize is given in recognition of the eminent literature, poetry or nonfictional work written in riksmål, or to the foremost translation to riksmål of fiction or nonfiction. Since 1991 the prize has been 100,000 kroner (approximately 12,500 €)

From the Wikipedia article “Norwegian Academy Prize in memory of Thorleif Dahl”, licensed under CC BY-SA 4.0.

Check the official rules of the Thorleif Dahl's prize for the current eligibility window, accepted formats, residency or language requirements and any entry fee. For most established prizes the publisher submits on the author's behalf, often with a limit on entries per imprint.

If you are self-published, look for an explicit statement that independently published books are accepted, and budget for entry fees and copies for judges.