Technically, the Sun send us orders of magnitude more energy that we will ever need. So, yes, I agree with you that today, efficiency of solar panels is not e

Technically, the Sun send us orders of magnitude more energy that we will ever need. So, yes, I agree with you that today, efficiency of solar panels is not enough for really big scale. But results are already impressive and furthermore, we have yet an infinity of optimizations to research to extract more energy from the sun. In fact, while absolutely not probable in the coming decades Solar could even be one of the « magic solutions » alongside the fusion. Because we know the energy is there, we just don’t get her how to extract it.