Energy conservation in hot weather could raise mortality rates, a new study that has reviewed data from Japan showed this week. The study, which will be published in the American Economic Journal: Applied Economics, argues that the Japanese government’s energy-saving campaigns since the country closed most of its nuclear power plants after the 2011 Fukushima disaster have led to higher death rates. “Exploiting the electricity-saving targets across regions and over time, we show that the campaigns significantly increased mortality, particularly…