https://en.wikipedia.org/wiki/Shockley%E2%80%93Queisser_limi...

There will never be a shipment of 90% efficient solar panels. Unlike fusion, nobody has even predicted that 90% efficient solar panels might be available in a decade.

If this is just a hyperbolic way of saying that people predict more efficient solar panels all the time -- well, yes they do. Many of those panels actually make it to market. The first terrestrial solar panel to reach 20% efficiency was introduced in 2012:

https://newsroom.sunpower.com/press-releases?item=122881

Today, a half dozen manufacturers offer modules over 20% efficiency. And the newer entrants are all doing it with simpler and more affordable cell designs than SunPower used in 2012.

https://en.wikipedia.org/wiki/Solar_water_heating#Energy_pro...