A wireless sensor network in your house would automatically shut off lights and turn down heating when you leave a room. But such networks have proven costly and cumbersome. GreenPeak has developed a communication technology for wireless sensor networks that can use energy harvested from the environment rather than from batteries. It claims to be the first Wi-Fi-based controller capable of providing a maintenance-free sensor network.
Lemnis Lighting was started by Otten and Warner Philips, both great-grandsons of the founder of Royal Philips Electronics. It aims to achieve affordable zero carbon-emission lighting by using light-emitting diodes (LEDs) in new ways. The company is striking deals to have its energy-saving bulbs distributed through electric companies.
source BW