How a lot does a 3kW photo voltaic system price in Australia, and the way a lot vitality are you able to anticipate it to supply? This text takes a glance a these questions, in addition to returns and payback intervals for 3kW photo voltaic programs.
What number of panels & how a lot roof area for 3kW of photo voltaic panels?
As residential photo voltaic panels a typically between 330 and 400W nowadays, a 3kW (3,000W) photo voltaic sytem would require between about 7-10 photo voltaic panels. A typical photo voltaic panel is round 1m x 1.7m, subsequently a 3kW system would require about 12-17 m2 of roof area, relying on the wattage of the panels. You may discover what number of panels will match in your roof utilizing satellite tv for pc imagery by way of Photo voltaic Alternative’s quote comparability platform.
As per the highest picture, most residential roof areas may have enough room for a 3kW photo voltaic system.
How a lot does a 3kW photo voltaic system price?
Photo voltaic Alternative tracks the worth of solar energy programs in Australia by way of our community and database of over 200 photo voltaic installers. We publish common costs month-to-month by way of the Photo voltaic Alternative Value Index which you’ll be able to confer with at any level. The most recent common value for a totally put in 3kW photo voltaic system is $3,980 which included the STC rebate and GST. See the total breakdown on the desk under which is up to date each month:
Common Value of 3kW Photo voltaic System by Australian Metropolis
| 3kW | |
|---|---|
| All | $4,120 |
| Adelaide, SA | $3,730 |
| Brisbane, QLD | $4,030 |
| Canberra, ACT | $3,560 |
| Darwin, NT | $5,570 |
| Hobart, TAS | $4,710 |
| Melbourne, VIC | $4,360 |
| Sydney, NSW | $4,050 |
| Perth, WA | $2,930 |
There are a lot of elements that can affect the worth you’ll be quoted. To offer you an concept of a number of the primary issues to look out for:
- The standard of merchandise utilized in your system – be cautious of quotes that look too low cost
- Double story homes require extra tools to get installers and the photo voltaic panels as much as the roof
- Tile or concrete roofs are dearer as completely different mounting programs are required
Historical past of costs for 3kW photo voltaic programs in Australia.
Taking a historic view of the Photo voltaic Alternative Value Index we will see that costs greater than halved within the final 8 years.
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Energy output for a typical 3kW photo voltaic system
How a lot photo voltaic vitality will a 3kW photo voltaic system produce? That will depend on quite a lot of situational elements comparable to location, orientation & tilt of the panels, the presence of shading and the general effectivity of the parts within the system.
It’s handy to summarise photo voltaic system output in a single determine – particularly, kilowatt-hours per day (kWh/day) as within the under desk. In actuality there shall be a major distinction within the daylight a photo voltaic panel receives throughout winter months and summer season months. In most cities in Australia a photo voltaic system will on common produce over twice as a lot vitality in January than in July.
The desk under offers some tough figures on common day by day outputs from 3kW photo voltaic programs in a handful of Australia’s capital cities (remember the fact that figures shall be greater in summer season and decrease in winter). All conditions assume the photo voltaic panels are mounted with a north-facing side with a tilt equal to the latitude of town and an total system effectivity of 80%. (Knowledge supply: Bureau of Meteorology.)
| Common 3kW photo voltaic system vitality yields | ||
| Adelaide | 10.9 kWh per day | 3,979 kWh per yr |
| Brisbane | 11.6 kWh per day | 4,234 kWh per yr |
| Canberra | 11.5 kWh per day | 4,198 kWh per yr |
| Darwin | 14.2 kWh per day | 5,183 kWh per yr |
| Hobart | 9.2 kWh per day | 3,358 kWh per yr |
| Melbourne | 10 kWh per day | 3,650 kWh per yr |
| Perth | 12.8 kWh per day | 4,672 kWh per yr |
| Sydney | 10.9 kWh per day | 3,979 kWh per yr |
Getting probably the most out of your system by maximising ‘photo voltaic self-consumption’
Lately, one of the simplest ways to economize with photo voltaic is to make use of the vitality your self (‘self-consumption‘). For each unit (kWh) of photo voltaic vitality that you simply use instantly, you cut back the quantity of vitality that you must buy from the grid – at charges round 25c/kWh in most of Australia. In distinction, in the event you let your photo voltaic vitality go into the grid, you’ll at present earn about 5-12c/kWh. In consequence, the proportion of vitality that’s ‘self-consumed’ will have an effect on the programs total monetary return.
By operating home equipment through the day when your photo voltaic panels are producing energy, you mechanically eat the photo voltaic vitality as a substitute of grid electrical energy; solely the surplus photo voltaic vitality is ‘exported’ to the grid. Basically, Photo voltaic Alternative would suggest deciding on a system dimension the place you anticipate to self-consume a minimal of 30% to be sure to the system will pay for itself inside the first 3-5 years.
Dwelling vitality administration programs, sizzling water diverters and timers are some in style methods for rising photo voltaic self-consumption. Dwelling battery storage can be more and more in demand, however excessive out-of-pocket prices for battery programs make this method much less enticing in the interim (though battery system costs are anticipated to return down dramatically within the coming years).
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Typical monetary return and payback interval for a 3kW photo voltaic system
Utilizing Photo voltaic Alternative’s Photo voltaic PV System Payback Calculator, we have now calculated the payback interval and IRR for typical eventualities in every of the state capitals in Australia. That is designed to be a information and we suggest getting a latest vitality invoice and utilizing our calculator to your personal circumstances. All the under returns are higher than what you may get by leaving your cash on the financial institution and ignores the environmental advantages of placing photo voltaic panels in your roof!
The costs used are reflective of the latest common prices for 3kW photo voltaic programs as noticed within the Photo voltaic Alternative Value Index. You may enter your particular quoted value and parameters into our calculator.
| System Value | Assumed Electrical energy Fee | Assumed Feed In Fee | Assumed Each day Power Utilization | Payback Interval | IRR | |
| Adelaide | $3,360 | 24c | 7c | 15 kWh | 4.1 Years | 24% |
| Brisbane | $3,940 | 20c | 5c | 15 kWh | 5.7 Years | 17% |
| Canberra | $3,560 | 19c | 7c | 15 kWh | 5.3 Years | 18% |
| Darwin | $5,810 | 27c | 9c | 15 kWh | 5.7 Years | 17% |
| Hobart | $4,880 | 23c | 7c | 15 kWh | 6.5 Years | 14% |
| Melbourne | $3,720 | 19c | 8c | 15 kWh | 5.8 Years | 16% |
| Perth | $2,870 | 29c | 6c | 15 kWh | 2.9 Years | 35% |
| Sydney | $3,690 | 18c | 6c | 15 kWh | 6.0 Years | 16% |
- This assumes that fifty% of the overall vitality consumption (15 kWh) is used through the daytime.
- Pricing per watt put in is unfavourable for 3kW programs in most states, it might enhance the payback interval to take a look at a bigger system
What a few bigger system dimension?
In the event you’re studying this text, it’s possible you’ll very effectively have determined that 3kW is the correct dimension to your residence. In the event you’re not but positive about the correct dimension for you, nonetheless, it is likely to be helpful so that you can know that 6.6kW is now the preferred photo voltaic system dimension in Australia. In actual fact, we’ve labored out {that a} 5kW system could even be a greater funding for a lot of properties than a 3kW system – see this text.
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