Hints and tips:
...These leading US funds now list in their portfolios energy-efficient lighting start-ups such as BridgeLux and Switch LED, both in California, and smart grid companies such as Tendril in Colorado and Silver...
...As chief executive of Bridgelux, a company that makes low-power lighting using light emitting diodes, he is at the forefront of a promising new field – but now warns that the LED industry is fast slipping...
International Edition