What are the main types of residential solar power installations?

There are two main types of residential solar installations. The first and most common system connects your solar panel installation with the main electricity grid. This Grid Connect system allows you to feed energy back into the grid through your meter, and be financially rewarded for it by your energy company.

The other is a ‘Stand-Alone’ solar power system for remote properties where the cost of connecting the solar panel installation to the main grid is prohibitive. The system charges a battery bank, which in turn is used to power a house. A generator is usually kept available to back up the battery system.

How much energy will my solar power installation generate?

The amount of solar power your system will generate depends on a number of factors; your location, the size of your solar array and inverter, the pitch and orientation of your array, the amount of shading on the array if any (any shading is bad, so the less the better), how clean your panels are, the efficiency of your inverter, the cable size and length of cable runs, cloud cover, time of the year, ambient temperature and panel and inverter quality. But don’t worry, even though there are many factors that will affect your output, once we understand more about your individual situation we can provide an estimation of your generation.

Will my system work at night?

No. Once the sun is down your system will shut down for the night. If you watch your inverter at dawn and dusk you will see and hear it performing a series of tests before it either goes to sleep for the night or starts up ready for another day of generation. At night your home will be consuming power off the mains grid. This transition happens seamlessly without you having to worry about any input from you.

Will my system work on cloudy days?

Yes, however your power generation will be reduced. Below are three actual generation graphs that show the effect that cloud cover will have on your system’s generation. Shading from a tree or building will also give you reduced generation.



Who will buy my excess power?

This will all depend on which state you’re in. Queensland and New South Wales do not currently have a feed-in tariff and in the Northern Territory you are paid at the same rate that you draw power from the grid. However, in Queensland different retailers i.e. Origin, AGL, Integral Energy offer different internal feed-in rates so it is well worth talking to us before making any changes to your regular retailer.

Do the panels need to be mounted on my roof?

No, however most domestic solar power systems are. Over the years Infinity has installed panels on to all sorts of structures across Australia. We offer the German made Sonnen Systeme dual axis trackers that can increase your generation by up to 40%. We also offer the German made Schletter ground mounted system that is the perfect large ground mounted system. In recent years we have also seen a large number of farmers build new sheds not just for space but to provide an area for installing their solar panel array on to.

Who does the solar installation and how long does it take?

DA Solar Innovations will provide you a free, immediate and informative Quote Comparison from up to 7 prominent and competitive installers wherever you are in Australia, as well as a shortlist of the products they offer. We are on hand to provide all the impartial guidance and information you need on the various products, prices and installers, so that your selection is an educated and well-informed one.

The Quote Comparison will fully disclose your Solar Choice Discount.

Installation of an average sized household solar system generally takes less than a day.

I live in a residential apartment building. What are my solar energy options?

There’s normally plenty of vacant and sunny space on the roofs of apartment buildings. You’ll usually need to obtain permission from your body corporate prior to any solar installation going ahead. Alternatively, your body corporate itself may wish to power the building’s common areas and lighting by a solar panel installation.

Fortunately, a body corporate is also eligible for the Solar Credit Discount scheme, as are owner occupiers and tenants of residential apartments.

Where should the solar panels be installed?

Wherever you have maximum sunshine and minimal shade. Normally the solar panels will be installed as discreetly as possible on your roof, but if you prefer they can also be erected free standing elsewhere on your property.

Maximum solar energy in non-tropical Australia is obtained by having the solar panels face north, and tilted upwards at an angle of 30 degrees. In tropical regions, where the sun is sometimes to the north and sometimes to the south, panels receive the most sunlight throughout the year when they are lain nearly flat with a slightly northerly tilt.

What is an inverter and where should it be installed?

An inverter converts the DC electricity generated by your solar panels into 240V AC electricity suitable for use in your home.

Inverters are usually smaller than a standard briefcase, and are situated close to your electrical switchboard.

How do I maintain my residential solar power installation?

Simply by ensuring, every year or as need be, that your solar panels are kept clean. That’s all you really need to do. There are no moving parts, and so a good solar panel installation should last you for 20 years or more.

What size solar panel installation will power my household needs?

[The table below is a guide only. Exact household electrical needs vary significantly depending on many factors including household insulation and the energy efficiencies of different appliances.]

Solar system power size Household electrical needs
450 Watt All your lights, TV, DVD player, sound system, microwave and kettle
900 Watt All the above uses plus your fridge, dishwasher and computer.
1.5 kW All the above uses plus either:
all other kitchen appliances such as your oven, grill and stove; or
all laundry appliances.
2.25 kW All the above needs plus almost everything else typically found in an average 3 bedroom home except air conditioning. You are essentially solar energy self sufficient!
3 to 5kW Complete solar self sufficiency, including standard use of air conditioning.

Each month we roll out numerous special offers and discounts for our solar panels.