Solar Rush

Our plans for planning application are virtually complete and now only lack details of solar photovoltaic/electric (PV) panels, and solar thermal (hot-water) panels on the south-southwest facing rear roof.  We will definitely install solar thermal panels to provide around 60% of our annual hot-water needs.  This is easier to plan as the panels are a fairly standard size.  We hope to also install PV panels, but this depends on the amount that can fit on the roof and the potential output of the system balanced against the cost.  As the sizing of PV panels is much less standard and the calculation of output and which panels to use in what configuration around roof-windows is much more complex, we need this information from solar installers.  Two local firms have agreed to provide a quote including all the relevant information, enabling us to reach a decision and - if we decide to go ahead - to include accurate details of solar installation on our plans for planning permission.
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