So, how would a creation feat involving a character creating so much water in the air that the sun is completely blocked out (not a single ray of light touches the earth) leading to a Solar Eclipse be calced or how much energy would it take?
its either a thick water wall or alot of tiny water particule, either way it should scale the same (the latter could even be stronger)
"In the ocean, the aphotic zone is sometimes referred to as the dark ocean. Depending on how it is defined, the aphotic zone of the ocean begins between depths of about 200 m (660 ft) to 800 m (2,600 ft) and extends to the ocean floor."
depth should be between 200 and 800 meter, ill take 500 meter.
if it really blocks everything it should cover all of the exposed part of the earth, assuming it really does cover all of earth and not just the exposed part and is acting like a moving umbrella cuz that sounds goofy;
lets say its 8000 meters above the ground so that it doesnt interfere with physical bodies on the surface (mountains)
volume of sphere : 4/3× π×r^3
earth radius (+height) : 6386000 meter (radius + 8000 meter)
earth volume : 6386000^3 * 4/3 * π = 1.0908759e+21 cubic meter
water body : ((6386000+500)^3 * 4/3 * π) - 1.0908759e+21 = 2.563e+17 cubic meter
density of water : 1000 kg/m^3
mass : 1000 * 2.563e+17 = 2.563e+20 kg
GPE;
for height ill take 8000 + 250 meter (average of the bottom and top of the water body)
2.563e+20 * 9.81 * 250 = 6.2857575e+23 joules, Large Country Level
As for creation, on the VSBW creation page it is listed as beyond High 6-A.
i dont know the formula for the GBE of such shape