In a house with ring mains already. We also have a fair few ideas about the elements.

I trained as a Civ Eng in Plymouth (the British one). I now own an IT company. I have a fair idea about fire risk (I'm our fire officer too) and how some materials behave in general and under loads and incident (eg fire).

In my opinion, roof mounted solar panels have very few risks in the UK. The likeliest risk is wind related. We are seeing increasingly strong gusts - virtually nothing compared to tornados but this is a land that does not have tornadoes (yet).

We need to consider surviving Beaufort force 12 as a minimum standard.