Swedish utility Vattenfall AB turned on some of its reserve diesel generators to supply power on an island in the Baltic Sea as a cold spell caused demand and prices to surge.
Wholesale electricity costs in the Nordic market jumped to their second highest on record on Monday as temperatures plunged below -40 degrees Celsius in northern Scandinavia. The two diesel units have a total capacity of 35 megawatts and are located near Visby on the island of Gotland.
