TBD- survey companies at major conferences and add to list
- solar companies at Solar Power 2008 conference (See large booths)
- Abengoa Solar- recent focus is solar thermal, involved in EuroDish sterling engine project, and solar troughs. 
- Akeena- One of the largest installers of solar power systems [www.akeena.net]
- Apricus Inc- Solar Water
- Schott- major PV manufacturer, USA
- SPG Solar- installer of commercial sized systems- claims of highest performance systems 
- Yingli Solar- is one of the leading vertically integrated photovoltaic (PV) product manufacturers in China.