Using solar power for homes has become very popular in recent years. Solar powered devices are environmentally friendly and relatively cheap.

Solar power systems make use of efficient flat photovoltaic (PV) panels that are simply mounted onto your building’s roof or on nearby land. The panels absorb photons from the sunlight and produce direct current (DC) electricity.

The DC power from the solar panels on your roof is then converted by an inverter into alternating current (AC) which is the type of power you use in your home. Everything is completely automatic with no moving parts to service or noise generation to affect productivity or neighbouring facilities.

Now that the power is in the AC form, it travels from the inverter to your electrical panel. From here, the power can be used in your home – free of charge – or sold back to your power company at the premium Feed-in Tariff rate!

The bi-directional utility meter is the device that simply measures your household’s energy production and consumption. In regions where a Net-Feed-In-Tariff exists, when your solar system produces more than you use, you will be credited the kilowatts produced, depending on local Governments  . This means that you are earning credits from your power company which is then used to offset your next bill or you can redeem your credits as deductions to your bill.

Alternatively, where a Gross-Feed-In-Tariff exists, your power company will purchase all of the power your system produces at a premium rate and you only buy back what you need (at a substantially lower rate).

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how solar works 2-1

 

 

 

 

 

Off-grid and Grid-tied Solar Power Systems

The two main types of solar power systems are off-grid systems and grid-tied systems. Making a comparison of these two types will help you to decide which of them is more affordable and suitable for your needs.

The main difference between off-grid systems and grid-tied systems is their dependence on the sun or on the utility grid.

Off-grid systems are more suitable in those locations where there’s more sun. They are ideal if you are looking for stand-alone solar powered system, especially if the utility grid is not available in your location at all. On the other hand, they will generally be more expensive as you may need additional PV panels if the location is not very sunny, as well as battery storage.

Grid-tied systems are less dependent on the sun as they are connected to utility grid. This means that whenever you need more power, you can get it from another source and likewise when you have unused solar energy you can feed it into the grid and get paid for it.

It is much easier and less expensive to install solar panels when you build a new house. Not only you can save money on additional wiring, but also you do not have to deal with re-planning or re-construction works. Nevertheless, it is a good idea to consider all pros and cons of different types of solar powered systems.

Why Choose Solar Power Over Other Sources?

  • ‘Reduction in Outgoings’ and ‘Electricity Price Protection’.
  • You become a ‘Clean Energy Provider’.
  • Economic – Social – Environmental responsibility.
  • Suitable for all business and domestic home building locations.
  • Low maintenance – totally safe
  • Increases property value as solar power is a valuable & tangible asset.
  • Earn money back by selling excess energy to the grid.
The diagram below shows how a solar power systems can reduce your costs, and even make you money depending on the power of the system installed.
Household solar power savings