Thankfully, the Norwegian Directorate for Civil Protection (DSB - Direktoratet for samfunnssikkerhet og beredskap) keeps an overview of the essential supplies you'll need to get you through emergencies such as power cuts and extreme weather. The state-funded website states that people in Norway would do well to keep a small emergency reserve of things that they cannot do without, such as water, food that remains stable at room temperature, medicines, and things like warm blankets and jackets rather than an electric blanket. DSB also offers an recommended emergency store that people in Norway are suggested to have: