Solar Concentrator Links

Elianto in Italy and Ausra in Australia are using a very smart-looking design that is basically a parabolic trough with fresnel effect, but the receiver is kept stationary like a tower. Only 1 axis needs to be turned to control all mirrors and they can be geared together so that only 1 motor is required. Allows mirrors to stay close to ground. Serious drawback: long focal length requires very accurate parabolic mirrors. At 0:40, Elianto shows a detail of the receiver.
 * http://www.ausramediaroom.com/
 * http://www.youtube.com/watch?v=RkucHl4GgN8

Saracon Parabolic Trough: low-temp steam for cooking for 15 to 30 people.
 * http://www.youtube.com/watch?v=MJYeQHAvgTM#t=240

PRACTICA Foundation "Smart Tech Against Poverty" has a parabolic dish and parabolic trough design for producing steam to drive micro steam engines for pumping water:
 * http://www.youtube.com/watch?v=-wwdEwHzGTA
 * http://www.practica.org/services/r-d/thermal-solar-pumps/

Alterner Solar with a large steam solar collector:
 * http://www.youtube.com/altenersolar#p/a/u/1/u42TFg2g4r4

Dr Reddy at IIT Madras with 2 Solar steam designs and has worked on optimizing the receivers:
 * http://www.youtube.com/watch?v=dGNFKKsPxoo
 * http://www.ese.iitb.ac.in/activities/solarpower/iitmadras.pdf

Concentrated Solar Power Open Source Initiative (CSPOSI):
 * http://www.csposi.org/

The solar cooking wikia:
 * http://solarcooking.wikia.com/

DIY solar Site:
 * http://www.builditsolar.com/index.htm