These external links provide the background to Solar Panels in general and Feed-in Tariffs in particular.

The links were correct as of February 2011.

 

The regulatory framework:

 

The standard the systems are installed to:

 

The basis of the calculations are embedded in the above Guide

 

Real data from across the UK and Europe:

 

Planning Permission:

Nasa's data on the solar insolation (needs free registration):

 

           http://eosweb.larc.nasa.gov