Conceived by Beverly Ng, the Spark Lamp is incredibly simple. During the day, the lamp is flipped upside down and placed next to the window to recharge. At night, the lamp is turned upright and switched on. At this point it establishes a wifi connection to the Internet and displays your home’s energy consumption by giving a soft green, yellow, or reddish glow for around three seconds. from Beverly Ng, the Spark Lamp
