What Size Solar Power System Does A Normal House Need?
Power use varies a lot from house to house. A “normal” home in QLD uses between 11.5kWh and 26.1kWh.
|Houshold Size||1 Person||2 People||3 People||4 People +|
|Average Electricity Bill||$320||$440||$520||$570 +|
|Solar Power System Size||3.5kW||4.5kW||5.5kW||6kW +|
|Approximate Savings||$339||$436||$533||$581 +|
What Are The Pluses Of A Residential Solar Power System?
There are many pluses to getting solar power on your house. Most people just want to reduce the cost of living by bringing down their power bills. Here’s why residential solar PV (power) is a great idea:
- You can get rebates up to 44% of your total system value (under review as of Jan 30, 2014)
- You can save lots of money with feed in tariffs of up to $0.18 still available in Brisbane
- Your decision helps make more green power which is good for the planet
- Solar power is one of the best ways to increase the value of your home
- Get a of 20% to 40% return on your money
- Easy financing options make it easy to get solar on the roof if you don’t have the cash
What Types Of Residential Solar Power Systems Are There?
There are 3 types of residential solar power systems in Australia:
- Grid connected solar power – this is by far the most common and the cheapest
- Hybrid solar power – this involves some batteries, while also having a connection to the grid
- Off grid or Stand Alone solar power – this involves batteries and no connection to the grid
Because the cost of batteries is still quite high, grid connected solar power systems are the most common residential solar power setup in Australia.
How Many Panels Do I Need And How Big Are The Panels?
Residential solar panels come in different sizes and with different power outputs. The most common panel size at the moment is 250W and these are about 1,000 x 1,700 mm in size (w x h).
How many panels you need depends on your system size. There are 4 panels required for each “kW” of solar. So for a 5kW system, you need 20 panels.
Who Installs The Solar Power And How Long Does It Take?
You will be contacted by up to 4 local residential solar installers to do the job. BSPQ can guide you on what you need to know at all stages of your solar power install. Our personal solar broker service gives you an added level of security (for a fee).
A full residential solar power install takes just a few hours but may take up to 2 days or more for large systems.
Can I Get a Residential Solar Installation On My Apartment Building?
You can install solar power on the roof as long as there is enough space and you have permission to do so. The body corp will normally give permission for you to install solar on the roof. Or they may want to start a solar power bulk buying project for the entire complex.
What Are The Parts Of A Residential Solar Power System And Where Do They Go?
There are 4 main parts to a residential solar power system:
- Solar panels – these should be put on the North-facing roof of your dwelling if possible. Otherwise East & West may also be used but will have system losses.
- Solar inverter – this is a box which changes the DC power from the panels into AC power. It should be placed in a well-shaded, ventilated area (preferably indoors). It should also be as close to your meter board as possible.
- Solar racking – the solar panels need to be mounted on racks designed to hold solar panels. These go on your roof and the panels are fixed to them.
- Electrical cabling etc. – some other electrical cabling and labels are needed for your solar power system. DC cable is used between your panels and the inverter and AC cable is needed between your inverter and your switchboard.
How Do I Maintain My Residential Solar System?
Very little maintenance is needed with a solar power system. You should clean your panels around twice each year to make sure you get the most out of them, and check your inverter regularly to ensure it is working well.