Hence my earlier “10 watts per day”.
Sun provides 1300 watts per square meter.
When you subtract out night, weather, efficiency, angles, and other factors, your net solar harvest is about 10 watts per square meter.
No, no. It would be nice, but no.
The sun provides 1362 (yearly average) to the top of atmosphere (TOS) IF the receiver is perpendicular to the sun's rays.
In the northern summer, 1310 watts.m^2.
In the northern winter, the sun provides 1420 watts/m^2.
At sea level, on an average day BETWEEN 45S and 45N latitudes, the sun might provide 1000 watts/m^2, for about 6 hours per day, IF the solar cells track the sun continuously.
For a flat plate laying horizontally (roof top, for example), the panel only gets 3/4 of that 1000 watts/m^2.