Because of problems on electrical cables supplying power to a number of neighborhoods in Brooklyn, Con Edison is reducing voltage by five percent in Coney Island, Manhattan Beach, Seagate, and Gravesend, in order to keep pressure off the grid while workers make emergency repairs. Like last week, customers (roughly 27,000 of them) are all being urged to conserve power and turn off non-essential electrical appliances to help reduce electricity usage until the equipment problems are solved. Con Ed doesn't know how long that will take, but you can check the company's website for updates with your electricity-devouring computer.