It's not that it is "not a certainty". It actually seems very unlikely that this could work.
> and now it is cheapest form of energy per MW on Earth
Thanks to fossil fuels, that have been used at pretty much every step of the process of building and transporting the solar panels. And then it only works with good weather. Not that solar is completely bad, but it does not look like it will be the replacement for fossil fuels.
It is not enough to be cheap as a marginal source of energy in a world with cheap fossil fuels. At some point it would need to work on its own...
It's not that it is "not a certainty". It actually seems very unlikely that this could work.
> and now it is cheapest form of energy per MW on Earth
Thanks to fossil fuels, that have been used at pretty much every step of the process of building and transporting the solar panels. And then it only works with good weather. Not that solar is completely bad, but it does not look like it will be the replacement for fossil fuels.
It is not enough to be cheap as a marginal source of energy in a world with cheap fossil fuels. At some point it would need to work on its own...