10kW photo voltaic techniques are an excellent funding for Australian houses with excessive ranges of electrical energy consumption or companies with comparatively small electrical energy wants. This text takes a have a look at 10kW photo voltaic system pricing, vitality manufacturing and returns in Australia.
What number of panels & how a lot roof area for a 10kW photo voltaic system?
Most residential photo voltaic panels have a output ranking of 330W to 400W which means a 10kW system will want 25-30 photo voltaic panels (sometimes 1.7 metres by 1 metres in measurement) and would require about 80 m2 of roof area. Extra environment friendly photo voltaic panels will cut back the roof area required and sometimes price extra as they’re utilising newer applied sciences.
How a lot does a 10kW Photo voltaic System price?
Photo voltaic Selection publishes a month-to-month Photo voltaic PV Value Index that tracks common pricing developments in each capital metropolis in Australia. In line with Photo voltaic Selection’s personal information, the typical 10kW photo voltaic system worth in Australia as of November 2021 is about $0.91 per watt – or about $9,090 after the federal STC rebate is deducted.
The graph beneath gives a snapshot of worth developments for 10kW photo voltaic techniques in capital cities across the nation. You may see that the worth has come down considerably during the last decade however has remained comparatively flat for the previous few years.
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How a lot vitality will a 10kW Photo voltaic System generate?
Relying a variety of elements, the precise energy output of a 10kW solar energy system will fluctuate. These variables embody:
-Geographic location (e.g. Darwin generates far more vitality than Hobart)
–Orientation and tilt angle of the photo voltaic panel array
–Whether or not there may be any shade forged on the panels
-Working temperature of the panels
The desk beneath offers indicative figures for what number of kilowatt-hours of vitality a north-facing 10kW photo voltaic system will generate per day (on common all year long) in Australia’s capital cities.
*(Knowledge ranges by way of PVWatts & Bureau of Meteorology, assuming 75% system effectivity for a north-facing array tilted at 30 levels)
Is a 10kW photo voltaic system best for you?
10kW photo voltaic techniques are on the big facet for residential installations (the place 5kW to six.6kW is far more widespread). In order talked about above, 10kW techniques are usually most applicable for houses with vital quantities of daytime electrical energy consumption (or companies with about 40kWh of daytime utilization). They could even be a superb measurement alternative for houses who’ve low electrical energy consumption and wish to go off-grid (see: “Can I’m going off-grid with a 10kW photo voltaic system?“)
The desk beneath ought to provide you with some concept about whether or not or not a 10kW system could also be well-suited to your wants – or if a greater system measurement is perhaps a greater match. We suggest that you simply self-consume no less than 30% of the the photo voltaic vitality that your system produces.
Keep in mind: The desk above is a extremely generalised, indicative information; it doesn’t consider your location or the lean & orientation of your roof. For those who’d prefer to take a extra detailed look, use our Photo voltaic PV System Payback Estimator or our Easy Photo voltaic System Sizing Estimator.
Additionally remember the fact that your community firm might have a default restrict on photo voltaic system measurement – they could not permit you to join a system bigger than 5kW to the grid with out further paperwork and inspections.
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What’s the monetary return for a 10kW Photo voltaic System?
As of late photo voltaic feed-in tariff credit are a secondary profit from having a photo voltaic system put in. As an alternative, you’ll derive probably the most worth out of your self-generated photo voltaic vitality by ‘self-consuming‘ it – utilizing as a lot vitality as doable straight. As a result of photo voltaic feed-in tariff charges are usually decrease than what you’ll pay for vitality from the grid, the extra photo voltaic vitality you utilize your self, the extra you’ll save; in the meantime, the surplus photo voltaic will circulate into the grid and earn you credit which assist to scale back your general invoice.
The desk beneath offers a tough overview of the distinction between retail electrical energy charges and photo voltaic feed-in charges by metropolis, based mostly on among the best provides obtainable.
Payback Interval for 10kW photo voltaic techniques by capital metropolis
The desk beneath takes a have a look at payback instances and inside charge of return (IRR) for many who set up a 10kW photo voltaic system in choose cities at two charges of self-consumption – low (30%) and excessive (60%) for a family that makes use of 35kWh of electrical energy per day on the charges listed within the desk above. For those who handle to realize even greater self-consumption charges, the returns will look extra beneficial.
| Indicative payback intervals for 10kW photo voltaic techniques | |||||||
| 10kW System Value | Electrical energy Value | Feed in Charge | Self Consumption Charge | IRR | Annual Financial savings | Payback Interval (Years) | |
| Sydney | $7,760 | 25c | 5c | 30% | 19% | $1,465 | 5.2 |
| 60% | 31% | $2,327 | 3.3 | ||||
| Brisbane | $8,810 | 18c | 5c | 30% | 14% | $1,254 | 6.9 |
| 60% | 21% | $1,822 | 4.7 | ||||
| Melbourne | $8,030 | 27.5c | 6c | 30% | 20% | $1,596 | 4.9 |
| 60% | 33% | $2,525 | 3.1 | ||||
| Perth | $8,810 | 28.8c | 7c | 30% | 22% | $1,940 | 4.5 |
| 60% | 34% | $2,886 | 3.0 | ||||
| Adelaide | $8,130 | 31c | 10c | 30% | 24% | $1,939 | 3.1 |
| 60% | 38% | $2,978 | 2.7 | ||||
| Hobart | $10,080 | 27c | 8.5c | 30% | 17% | $1,680 | 5.9 |
| 60% | 26% | $2,496 | 4.0 | ||||
| Canberra | $7,410 | 20c | 7c | 30% | 20% | $1,467 | 5.0 |
| 60% | 29% | $2,045 | 3.6 | ||||
| Darwin | $13,670 | 26c | 8c | 30% | 15% | $2,050 | 6.5 |
| 60% | 22% | $2,842 | 4.7 | ||||
Assumptions:
- Common each day vitality use = 35 kWh
- 10kW System price is the typical worth for a completely put in turnkey system
- Excludes state-based photo voltaic grants / rebates (e.g. Photo voltaic Victoria rebate)
Our assumptions not correct for you? Calculate your individual specifics with our Free Photo voltaic Payback Calculator
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