Германия: Fraunhofer ISE
With a staff of above 1200, Fraunhofer ISE is the largest solar energy research institute in Europe. The work at the Institute ranges from the investigation of scientific and technological fundamentals for solar energy applications, through the development of production technology and prototypes, to the construction of demonstration systems.

The Institute plans, advises and provides know-how and technical facilities and services.
http://www.ise.fraunhofer.de/en/about-us

Renewable Energy Data
Electricity production from solar and wind in Germany in 2014 [PDF document 2.6 MB]

Recent facts about photovoltaics in Germany [PDF document 4.7 MB]

Electricity Spot-Prices and Production Data. Last updated: January 16, 2014

Study: Levelized Cost of Electricity- Renewable Energy Technologies [PDF document 4.6 MB]. November 2013

Annual Reports

http://www.ise.fraunhofer.de/en/press-and-media
http://www.ise.fraunhofer.de/en/publications