ABERDEEN, Scotland — This northeastern coastal city was a sleepy college town and fishing port until the 1960s, when the discovery of oil in the North Sea triggered an economic boom that earned it the nickname “Scotland’s Texas.”But a crash in global oil prices sent the economy into a tailspin, forcing this city of 200,000 to transform itself into a powerhouse for green energy to fight climate change and revive its once booming economy.
