It's not 40x more, it's barely 40% more. [1]

> Average annual solar radiation arriving at the top of the Earth's atmosphere is roughly 1361 W/m^2. The Sun's rays are attenuated as they pass through the atmosphere, leaving maximum normal surface irradiance at approximately 1000 W /m^2 at sea level on a clear day.

There are practical challenges, but otherwise, yes, it should work.

[1] https://en.wikipedia.org/wiki/Solar_irradiance#Irradiance_on...