On Tue, 07 Mar 2006 12:03:12 +0000 Ajh wrote :
Just installing the thermal store is over
GBP400 and I already possess a number of secondhand panels, it's not
worth my while installing them yet.

So where do I find typical figures for solar insolation for London UK
in the "heating" season October to May.

If you really want to wade through some numbers (UK average, not London
specific) check out SAP-2005 appendix H

http://projects.bre.co.uk/sap2005/

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