Can anyone tell us which present “renewables” are actually being renewed ?

Average costs are misleading because what counts is the cost of incorporating a generator into an electricity utility which is quite different. Also note that Denmark and Germany have the highest electricity costs in the EU and they also have the highest % of renewables in their systems. Also renewables is a misleading term, energy cannot be created nor destroyed but can be changed from one form to another. Solar panel and windmills, the materials, are not renewable, or rather, reusable either. Intermittents would be a better term for solar and wind generators.

Steve S.:
Your comments are spot on. The distressing thing is that Federal and State Governments accept in an eye-blink, every new slogan coined by the UN; "net Zero", "1.5", "melting ice caps", "species extinction", and so on. And yes, nobody is game to stand up in Parliament and say that climate "change" is a figment of the imagination, and the greatest hoax in human history.

I think it has been now realised that renewables means that they have
to be renewed every 25 years.
I think we should use the name intermittents for wind and solar.
I have seen many discussions on just how many times peak demand over a
year has to be duplicated to get 100% supply 100% of the time.
It spends largely on the geographic size of the grid.
It depends on the latitude of the grid.
It depends on the wind pattens of the grid.
Forget the solar, it is only there for a short time each day.
Those that have been game to do the calculations say that the
duplication varies between 5 and 12 times the maximum demand.
Taking into account the 25 year lifetime the renewables are impossibly expensive.

Reading the European press etc it now seems that Net Zero is in the
process of being abandoned.
The Germans seem to be leading the charge with the British not far behind.

Well done Bezza. Great Ilustration why all-renewables grid is not fit for purpose and that the term renewables is not fit for purpose either. Net zero is very unlikely anywhere any time soon, while atmospheric CO2 still increasing, now 424 ppm.