When heat from the sun becomes trapped in the Earth's atmosphere due to certain gases.

The gases responsible for trapping heat from the sun within the Earth's atmosphere (e.g., water vapor, carbon dioxide, methane, ozone, chlorofluorocarbons, and nitrogen oxides).

A distribution network, including towers, poles, and wires that a utility uses to deliver electricity.

A solar system that is tied in to the utility's network. When generating more power than necessary, the system supplies the surplus to the grid. At night, the system draws power from the grid.