Photovoltaics are referred to PVs by many people. They convert the sun's energy into electricity which can be used in the home.

Photovoltaics are made using semi-conductor technology. They produce an electrical current when they are exposed to light.
The systems can be quite complex and comprise of:

• PV panels
• Batteries (if energy storage is required)
• An Inverter (to change the direct current to alternating current)
• An Export Electricty Meter (if you can sell electricity back to the grid)

Currently the cost of photovoltaics arrays are too great for them to be ecconomically viable in Ireland. This could change soon with newer methods of manufacture. That said, photovoltaics can still represent a huge energy and carbon saving for your home.