I am doing some research on the costs of PV solar. Is there a scenario where solar PV becomes very very cheap? As cheap as say glass or wood. Could we get to a stage where solar is ‘dirt cheap’ and everyone starts fitting it to their houses?

What would happen then? The price of houses may rise compared to flats with no available space for solar PV. Demand for energy would fall - at least on sunny days. The demand for batteries would rise. The cost of scaffolding would rise. Planning permission would need to be waved so not to upset thousands of homeowners. Landlords including Local Authorities would need to respond to ensure no part of the community was disadvantaged.

Central power generation and the electricity network would need to be more flexible to meet the volatility in demand.

Oh what a world - so should we go for it? What say instead of investing billions in nuclear we invested in bringing down the price of solar PV and improving its efficiency.

What companies would benefit from such a world - the manufacturers, utility companies, installers, etc.

With a wholesale move to solar the world could be a very different place - not least in the view of the skyline across London.