It may sound complex. But solar is simpler than you think.

At UNIfied Energy Services, we aim to take the complexity out of the solar process to make it easy to understand, quick and affordable, for your family. Let’s get started!

Understanding what effects solar production: does panel efficiency really matter?


Number of Connections: the more splits or connections along the system reduces the energy output of the solar system.  This is because each connection creates an additional point of resistance along the electrical circuit.

Cable Length: The more cable used will reduce the system efficiency as the longer the cable, the larger the electrical losses.  As such, inverter placement and distance to the switchboard need to be taken into account.

Cable Thickness: the thinner the cable will exaggerate the losses on the system. There is a minimum thickness that is allowable by the Clean Energy Council. Often a budget solar system will use thinner wiring as it is cheaper however the losses are greater.

Energy losses due to the quality of wiring and installation can be between 1% and 8% / year

Angle/Roof Pitch

Optimal pitch for solar production is 30 degrees.  The standard pitch for a roof in Australia is between 15 and 22.5 degrees.  Loss of output from 30 degrees to a flat roof 95 degrees is approximately 10%.


Panels facing true north will provide the optimal level of output in Australia.  In general, panels that are facing directly east or west will produce about 20 percent less electricity than if they were facing north.

Sunlight Hours

Due to the length of the days, depending on the state, the impact on a monthly basis from summer to winter can cause a variance of up to 50% of the solar output.  So you will often see the impact on your energy bills in summer be much more noticeable than in winter.


The output of a panel is directly tied to the amount of light that hits the panel.  The soiling (dust, dirt, bird droppings etc.) can impact the output dramatically.  Generally, this is also tied to the level of rainfall.  In dry dusty environments this will be higher than in cities where rainfall is regular.  To keep up the optimal output we recommend cleaning your solar panels at least annually.


Level of shading by any obstruction such as trees, neighbours houses, power lines and poles.  Sometimes even if one panel is obstructed it will reduce the output of the whole system.  Also, bear in mind that the system will be with you for 20 + years and trees grow.  If there is shading it may just be obstructed in the late afternoon or early morning and your output won’t be materially impacted.


Solar systems like sunlight – not heat.  There is a clear correlation between temperature and output.  Most panels will specify the output at a certain temperature and this will degrade as it gets hotter than this.  However, changes in temperature are generally taken into account when calculating your system performance.

Interested in solar?

Get a no hassle, no pressure, free consultation with our solar specialists about the right solar solution for your home. Call 1300 817 847 (Option 3) today!