RoseStreet Labs Energy claims a hydrogen milestone: the ability to generate hydrogen gas from sunlight using solar cells and no external energy.

The company claims to use no external power, but refuses to offer any details on achievement
The Phoenix company offered little detail about its achievement or the volume of hydrogen gas it observed. And two officials at Rosestreet, when contacted, declined to elaborate.
Nonetheless, if true, the development could be promising since up to now generating hydrogen has consumed significant energy. In a press release the company said the hydrogen was generated without external power or the use of petroleum products, such as natural gas.
Rosestreet said its thin-film cells, based primarily on nitride technology, are expected to begin commercial field trials in 2010 and achieve 25 percent or greater efficiencies. Still, its pace of development has been slow.
The company licensed photovoltaic technology from the Lawrence Berkeley National Laboratory and Cornell University in 2005 and vowed then the technology could achieve astronomical efficiency above 48 percent. A year earlier, it had purchased a wafer bumping plant from Kulicke and Soffa Industries.
While the prospect of generating hydrogen without an external power source is exciting, Rosestreet’s unwillingness to discuss the accomplishment even at a high level is suspicious. Perhaps this message on the company Web site best explains its goals: Rosestreet is seeking investment funding.
Posted by Mark Boslet 

