solar photovoltaic (PV)
A solar PV system uses energy from the sun to generate electricity. It doesn't need sunlight to produce electricity - only daylight, even in winter. Solar PV panels convert the sunlight directly into electricity, whereas
solar thermal panels use it to heat water for your home.
Solar panels are usually installed on south-facing roof surfaces in order to capture the maximum amount of sunlight available. The electrical conversion happens silently and without creating pollution.
Here's how it works
- A solar PV panel consists of cells of one or two layers made from a semi-conducting
material like silicon
- When light shines on the cell it creates an electric field across the layers,
causing electricity to flow
- The electricity flows through a cable and is collected at a central point often located
in your roof space
- The electricity is then converted from a direct current (DC) to an alternating current (AC) and carries on into your home for you to use
For more information, visit
The Energy Saving Trust - Solar-electricity page.