How Much Power Does A 10kW Solar System Produce in Australia?

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You can read in-depth about the performance of a 10kW solar system in Australia, and more here: solaray.com.au/10kw-solar-sys...
One of the biggest misconceptions people have when sizing up a solar system is to think that a 10kW solar system will produce 10kW of power at any one time.
Covered in this video:
0:00 Introduction
0:49 The difference between kW and kWh, or power vs energy
1:30 How is the size of a solar system calculated?
2:31 How much does a 10kW solar panel system really produce?
3:43 How do you calculate the benefit?
5:12 Outro

[@flain283]

1st rule about solar power, is just get the biggest possible system you can get. Seriously over my many years talking to people who have gotten solar, the most common regret people seem to have is not getting a bigger system.

[@thomasjacques5286]

I'm just starting my solar energy journey by gathering estimates from several vendors. This tutorial added more tools to my kit so I can better understand all the promises and jargon being thrown about. Thank you.

[@SolarayEnergy]

Glad it was helpful!

[@trebletech_au]

I recommend also explaining the restriction in grid exports. Different per state and utility provider, I believe the max Australia-wide is 5kW/h.
A magic day with 8h continuous perfect sun conditions, and not a dot of shade, you can export 8h * 5kW = 40kWh total, or around ~$2 (@5c/kwh). This is apparently due to our 'downhill grid' not being able to spread the load of everyone powering up the continent.
Given 'supply charge' is generally ~$1.30 per day(!!), you are lucky to cover 50% of daily costs due to export limits in perfect conditions.
Add in shading, and seasonal variation (3h max sun in winter), I would suggest the savings calc should use something much less than $5,840.

[@reid1boys]

IN ca I have a 10.4kw system and we make about 17,000 kwh per year. Since I have NEM 1.0 O get full credit for every KWH I send to the grid. So Solar was an absolute no brainer investment.

[@yeanswers]

Insightful Info!😊

[@malachygallagher4936]

Hi very well explained!Thanks mg.

[@neilkemp9118]

In Alexandra Victoria, true north, 30 deg, our system produces 12000kwh per year, plus or minus a bit.
That has been over a 14 year period. Only cleaned after 10 years, no change to output before or after cleaning.

[@dan2304]

Sydney numbers, about 3.6 kWh per kW of installed per day averge. So a daily average over a number of years a 10 kW system will produce a daily average is 36 kWh.

[@simongross3122]

Thanks for the explanations, but I think it's much more complicated than that.
Since we use more power at some times of the day than others, and if those times of high usage do not coincide with the times of high output from your PV system, the benefit could be much smaller than this simple calculation. It is possible to get hourly usage numbers from your provider for a number of months or years. Comparing these to expected output, also at hourly intervals and depending on the season, you should be able to model a much more accurate projection of savings. Of course, you also have to estimate increases in future energy prices to make it more believable.
The other consideration is that your energy provider will charge a connection fee, which seems to have been increasing lately. This needs to be paid regardless of how much energy you import from the grid. It's easy to imagine that when most people satisfy more of their requirements from solar, the energy companies will simply increase this charge to ridiculous levels or make it dependent on your total power usage just to maintain profits.
I'm tempted to oversize my (hypothetical) system to overproduce at the low-output times of day, but I think I then run the risk of not being able to export all of the excess. Of course, if I also had a battery, this could be smoothed over, but batteries are still way too expensive.

[@illawarriorhill70]

No mention of inverter size ?

[@diytroubleshooter]

We have more sunshine in May and June, 10 kilowatts of steam goes up to 66 kilowatt hours a day, my hand held system. In Pakistan

[@zeessae2070]

prove it, r u using andriod app for solar monitoring? r u from karachi?

[@trandafirmarius3505]

The power is calculated in kwh and there is the diffrence of consmumtion of current

[@Ebrsd]

Perfect explanation plz are you running your business of installation.if yes I can help you .now I am in Germany

[@specialized29er86]

This is why we are going with an 8.8kw system instead of a 6.6kw system.