The biggest problem faced with solar power energy is affordability.
While sunlight may be free, the conversion of it is not. One can save money by converting some items in their household to solar technology.
In order to convert the entire house to solar power it takes a significant investment. Another point is that solar cannot be used as the only source of energy.
It must be combined with other energy sources. The sun is a free natural resource, but at night the sun does not shine.
It is also a problem in geographical locations where there is less sunlight. At night in these areas, little energy is produced.
