We'll decide whether or not the sun is a viable source of energy in this problem. Draw your figures above.
a) The sun produces Watts of power and is meters away from the earth. Estimate the energy that, on a clear day, strikes a solar panel 1 meter square in one hour when sunlight is incident on it at an angle of 45. Use any reasonable assumptions you like about absorption or reflection at the panel surface and by the atmosphere.
b) If one could store and recover only 1% of that energy in later use,
how long could you run a 100 Watt light bulb for in the evening from an
hour of sunlight during the day?