Valid concern, thanks for posting. The figures for average daily sunlight in Vietnam are around 7.5 hrs per day, which is high, compared with UK which is about 4.1 hrs per day, so just over half of what Vietnam gets in sunlight.

However, what Vietnam got in solar infrastructure, was 8 times the solar energy cap of their grid, and 16 times what the government target was, when they issued the initiative to acquire solar.

It follows logically that if UK issued a similar initiative, we would end up with also overcapacity, but not of 8x and 16x, but more like half of that, ie 8x initial estimate, and 4x grid cap, due to the lower capability of the added infrastructure receiving only about half of the hours available to Vietnam.

This is still a comfortable excess.

Add to that that we maybe know a little more than Vietnam about the economic effects of receiving that amount of free energy into our economy; it absolutely causes physical inflation, if it is not monetised, as explained in my money-fuel tree story (It is already doing so).

And we absolutely do have the technical expertise to put the excess energy to hydrogen, so we would not encounter the same friction between government and solar farms which we can see happening there.

So we would very quickly find that everyone could have free income, maximisable by maintaining and maximising their local community solar hydrogen infrastructure.

To me that looks pretty appealing, and absolutely feasible.

Sensibly, we should create a project plan, with these things in mind, to implement only the solar capacity needed, backed up by hydrogen initially, then allow market forces to drive up the capacity to enable trading of hydrogen on markets.

This would not involve outlays from householders, or even businesses, grants could feasibly be made available from banks, who could issue the funds needed as a kind of advance, on the value of solar product expected to be added to the economy.