PV or photovoltaic solar panels turn daylight into free electricity.
These operate completely differently from solar hot water collectors. When daylight strikes a PV solar panel, a DC electrical current is generated. If you arrange several of these panels on a roof in series, the current becomes significant. This DC current then travels down to an inverter, which converts the electricity from DC to AC. All homes in Ireland use AC power to run all the standard electrical items in the house.
PV solar panels provide you with free energy and free electricity to power your TV, kettle, toaster, phone charger, radio, oven and so on. The amount of free electricity that your PV panels generate is guaranteed for at least 20 years. That gives you peace of mind long into the future.
Photovoltaics is the conversion of light into electricity. Photo meaning light and voltaic meaning volt, or electricity.
There are some materials that will generate electricity when light is shone on them. The amount of electricity generated by one cell is only small; so many cells are arranged together to form a module or a solar panel. One solar panel might have 60 small solar cells in it. Then you might have any number of solar panels wired together, to form an array or a bank or solar panels. A typical domestic system could have 5 to 20 solar panels on the roof. For commercial solar PV installations, there could be hundreds of solar panels in the array.
The electricity usually travels by a cable from the array down to an inverter in the attic. The inverter changes or converts the electricity from DC to AC electricity. AC power can be used in almost all homes in the world.
Once the power is converted to usable AC power, it’s sent to the fuse board in your home. From there it will go to all the power outlets in your home as it always would. If there is more power being generated by the panels than your home requires, the excess can be diverted to your electric immersion, which will give you free hot water. Once the water cylinder is hot, the excess is then sent to the national grid. This cuts down on your electricity bills dramatically.
If the panels are only generating 60% of the power that your home requires, the 40% balance will come in from the grid as it normally would. Practically every home already has a connection to the grid, which is where electricity comes in to your home from the ESB.
So, if you install a solar PV solar panel system, you will benefit from reduced electricity bills forever, your BER will be increased and your green credentials will be greatly increased. Install the latest technology on your home and take control of your bills.
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