The Estate has issued updated guidelines for house holders wanting to install solar panels:
http://www.dulwichestate.co.uk/som/policy-guidelines
All guidelines can be found on the Dulwich Estate web site at www.dulwichestate.org.uk
Solar Panels – Guidelines from the Dulwich Estate
You’ll be surprised how much electricity you’ll get from solar panels, even when it’s cloudy. I’ve got a little ‘solar system’ placed in my garden (too many trees around my house.) It’s not that big, but in the summer, I get so much extra ‘juice,’ that I can run my printing press on it…but then I don’t get the summer rain that you get in the UK.
http://solarbeez.com/2012/11/05/my-little-solar-system/