Greenwave Reality CEO Greg Memo shows off how a grid-aware home energy system can be controlled and monitored either from a smart phone, PC, or Sony TV. Devices are connected to a home network by using smart plugs, seen on left, and a smart meter. The company is testing its system with utilities in Europe.

Soulra radios from Eton can charge are equipped with solar panels to charge an iPod which fits inside the case. The radios can also run off of an AC outlet. This week, the company also introduced hand-crank operated radios and lights designed for emergency situations or off-grid use. The hand-cranked equipment also comes with a USB port to charge a phone or other small gadgets.