The month the map flipped

One Hundred Hours, Gone

In June 2025 the German day-ahead market cleared below zero in 141 hours, nearly one hour in five, a full working month of electricity priced as a liability. In June 2026, the same market in the same calendar month went below zero 41 times.

Nothing was repaired in between. No storage fleet arrived at scale, no transmission project completed, no market rule changed. The same panels stood in the same fields, bidding into the same auction at the same hour of the same afternoon. And a hundred negative hours were simply gone. Finland's count fell from 126 to 13. Sweden's SE1 zone went from 105 to 11, DK1 from 116 to 27, the Netherlands from 127 to 50. Every northern and Nordic zone in our database moved the same direction, and most of them moved by an order of magnitude.

Then look south, at the same month. Spain went from 55 negative hours to 102. Portugal went from 10 to 66. Whatever the north lost, Iberia gained, and that symmetry is the reason this is worth three thousand words. Negative prices are routinely read as the headline symptom of the renewable build-out, the number that tells you how far a system has run ahead of its own flexibility. If that number can halve in a year in one half of a continent while doubling in the other, without a single panel being removed or added in anger, then it is not measuring what it is usually taken to measure.