Australia has taken a long way in the solar system to save green energy. And not only in Australia but across the country, we can see that 10% of suitable rooftops are now embedded with solar panels. Different sizes of solar systems are installed depending on the incentives, what prices are offered at the installation, and the electricity needs of any project(commercial/residential).
The maximum system that can be installed in residential areas is 15kw in Australia; it will produce sufficient electricity to meet the requirements of the home’s daytime.
Solar Panels and Roof Space Required for Eight kW system:
Gradually, over time, the efficiency of solar panels has increased and improved, and due to that, the number of panels required to be installed for the 8kw system is 20-24 panels.
One needs to consider the space required between panel size and maintenance and access with exclusion zones of the property, like edges and ridges of the roof.
Cost of 8kw system:
We all know about the federal rebate called STC offered by the Australian govt, and it covers 30-35% of the upfront cost of installing solar Based on the index provided by the, After STC, the price of the eight kw system will be $7.737 inc. GST. Break down of the cost as per state has been mentioned below in the table:
How much energy will be produced:
Actual power output depends on various factors like:
- Location and Climate
- Tilt & orientation of the solar panels
- Presence or absence of shading
- Overheating of the solar panels
- The quality and size of the system’s inverter
- The performance of the overall system
In all these points mentioned above, the common thing is the sunlight available in a given region. The solar industry uses a metric to measure Peak Sun Hours(PSH: equal to 1 hour of full sunlight) as the sun moves through the sky, and the strengths of the rays it casts on the location(varies).
Payback & Returns on 8kw system:
Payback period & ROI depend on various factors, but the main thing to install in Australia is the low cost of installation and solar system compared to the high cost of electricity bill. From state to state and distributor to distributor, FIT varies.
If you own a solar system, then you think about consuming as much power as it produces, as it will save a great amount of power. The electricity purchased from retailers is higher than FIT offered by the same/ different retailer for excessive solar power.