Why solar power need huge amounts of energy storage

Problem 1: Day & night (Night Storage)
Earth is a sphere, orbiting the sun while spinning around its own axis wich result in day and night.

Problem 2: Cloudy weather (Cloud Storage)
The sunshine doesn’t always reach the earth with its full potential because of clouds. This can last for days and sometimes weeks.

Problem 3: Seasons (Seasonal Storage)
The earth is rotating with an axial tilt of 23.5° relative to the earth's orbital plane around the sun which results in seasons, meaning the solar radiation is considerable less during winter compared to the summer.