Payback times depend heavily on the amount of solar energy that you consume directly vs export to the grid (‘solar self-consumption ratio’), so we’ve included both ‘low’ (30%) and ‘high’ (50%) scenarios. Using Solar Choice’s Solar PV System Return on Investment Calculator, we’ve calculated indicative payback periods, annual internal rates of return (IRR) and annual savings (in year 1) using 5kW solar systems for common usage situations in some major cities based on average system prices as of February 2022. Examples using Solar Choice’s solar power system ROI calculator There are network limits on whether you are allowed to export energy from your Solar PV system, and feed-in-tariffs available also vary greatly state to state. Solar Feed-in Tariff schemes pay solar system owners a set amount for each unit of solar power that they export to the electricity grid. The financial returns from a 5kW solar installation are a bit harder to work out, and mainly contingent on whether or not a solar feed-in tariff is available to the owner/operator of the system. (Figures are only to be taken as rough estimates.) What is the financial return on a 5kW Solar System? This is only the annual average per day, and it is important to keep in mind that there will be more sun in the summer and less in the winter months.Įxample: An optimally tilted, 85% efficient, north-facing 5kW solar system in Sydney, for example, would produce about (3.5 PSH x 5kW x 85% =) ~15kWh of power on a day in the peak of winter, whereas in the summer output from the same 5kW solar system would be around (6.2 PSH x 5kW x 85% =) ~26kWh. As a rough figure, a rooftop in Australia can expect to receive around an annual average of 4.5 hours of ‘peak sun’ (peak sun hours, or PSH) per day, although this number may range as high as 5.8 PSH per day in places like Darwin or as low as 4.2 PSH per day in Tasmania. The amount of sunshine falling on a solar panel array has a direct impact on the system’s output. the panels and the inverter)Īs mentioned in the first point above, different areas receive different amounts of sunlight. The performance of the individual components (e.g. Actual operating temperature of the panels – Whether there is any shade cast on the panels – Orientation and tilt angle of the solar panel array Geographical location of the system and the expected daily and annual solar irradiation and cloud cover levels there How much power will a 5kW Solar System generate?ĭepending a number of factors, the actual power output of a 5kW solar power system will vary. The graph below shows how the cost of a 5kW solar system has declined over the past decade, broken down by state capital cities around the country. History of 5kW solar system prices in Australia The quality of solar system equipment you select will also influence the price.These are average prices, difficult installs on concrete or tile roofs will be more expensive.This pricing includes the Goverment STC rebate and GST, but excludes state based rebates like Solar Victoria.You can see the full breakdown of how that average cost varies by capital city in Australia, which is updated every month: 5kW solar system average costs by Australian city According to the Solar Choice Price Index, the average cost of a 5kW solar system in Australia as of October 2022 is about $1.08 per watt – or about $5,410 – after the STC rebate has been deducted and including GST. How much do 5kW Solar Systems cost?Īustralia is home to some of the lowest solar PV system prices in the world, thanks to a broad combination of global and local factors. You will find that solar panel sizes vary depending on brand and whether they are designed for commercial or residential use, but most commonly panels are around 1.7 metre by 1 metre on a 5kW system. How many panels & how much roof space for a 5kW solar system?Ī modern-day 5kW solar system will be comprised of between about 15-20 panels and will require about 25-35 m 2 of roof space, depending on the wattage of the panels and how they’re tilted. What are the price ranges, electricity yields and financial returns that a household can expect from a 5kW solar PV system? This article takes a look. 5 kilowatt (5kW) solar systems have become one of the most popular sizes in Australia, thanks to the combination of high energy yields and great value-for-money that they deliver.
0 Comments
Leave a Reply. |