The second study is of further interest due to the analysis of correlation in load variability between the Nordic countries, based on 2009-2011 data. They find 0.7 correlation between Denmark and Sweden but weak correlation in other pairings. Looking at it another way, for single countries, there are periods when actual power from all wind turbines is 2-5% of the total power (mostly in the summer), but for the entire region, the minimum is 14%. As for over-supply: with their scenario for wind power expansion in the region to an annual penetration of 30%, while production in Denmark could peak at 160% of domestic consumption, for the entire region, it's 110%.

_{*Lunatic*, n.
One whose delusions are out of fashion.}