What is the stated main idea in the paragraph?

Solar power uses the sun to make energy. Special panels are placed in the sunlight. These panels turn the sun’s energy into electricity. On cloudy days, the panels cannot make electricity because there is not enough sunlight. Therefore, solar power is not useful in some places.

A.
On cloudy days, the panels cannot make electricity because there is not enough sunlight.

B.
These panels turn the sun’s energy into electricity.

C.
Special panels are placed in the sunlight.

D.
Solar power uses the sun to make energy.

D. Solar power uses the sun to make energy.

The stated main idea in the paragraph is D. Solar power uses the sun to make energy.