Solar thermal is much more efficient but it's expensive and no one seems to be doing it in scale. See https://en.wikipedia.org/wiki/Solar_Energy_Generatin

Solar thermal is much more efficient but it's expensive and no one seems to be doing it in scale. See https://en.wikipedia.org/wiki/Solar_Energy_Generating_Systems https://en.wikipedia.org/wiki/Solar_Energy_Generating_System... or https://en.wikipedia.org/wiki/PS10_solar_power_plant https://en.wikipedia.org/wiki/PS10_solar_power_plant