a bit OT, but I have about 70m2 south facing roof space (UK) where I'd like to install solar panels at some point. How are panel prices likely to develop over the next 5 years? Should I wait, will panels become ridiculously cheap in the near future?
I can't speak to the UK specifically, but I have 4.8kW system on my south-facing roof in similarly-cloud Oregon. Panels will continue to get cheaper, but likely the largest part of the cost will be the installation, and that is not likely to become cheaper nearly as soon (though it should gradually, as it's more and more common).