Sources of Solar Energy

Solar energy comes from the solar radiation emitted by the sun. Solar energy is beneficial because it is a renewable resource.

Electricity

Photovoltaic cells convert solar radiation directly into electricity that can be used immediately to charge generators or released to the power grid.

Heat

Solar heaters harness the solar energy from the sun to heat water. Water is passed through solar panels to heat it which saves having to use fossil fuels for heat.

Mirrors

Mirrors can be used to reflect the solar energy to a central point where it is converted to heat that can be used for generating electricity.

Benefits

Solar power does not release greenhouse gases or contribute to acid rain like burning fossil fuels.

Limitations

Solar power can only be generated on sunny days so it cannot be counted on to produce energy at all times.

References

• DOE - Solar Energy
• Solar Power
• Concentrating Solar Power