Egypt said it was extending its rolling power blackouts across the country for an extra hour on Tuesday to allow for preventative maintenance on its regional gas and power networks and because of increased consumption caused by a heatwave. Temperatures rose to nearly 40 degrees Celsius (104 Fahrenheit) in Cairo on Tuesday and were forecast to climb even higher over the coming few days. “This requires increasing the load shedding period for an additional hour, today only, to maintain the operational efficiency of the national electricity transmission and gas networks,” a joint statement by the …