https://www.youtube.com/watch?v=twcqk1kdhte
You need to know the following when it comes to buying the right and correct number of solar collectors for your home in 2025 – and discovering the biggest mistake.
Clarify measuring units
At first it is worth explaining some relevant terms that many people are still confused watt (w) and watt hour (WH) as well as kilowatts (KW) and kilowatt-lessons (kWh).
- Watt1 is a measure of immediate power.
- Watt hour is a measure of the energy that is generated or consumed over time.
- There are 1,000 watts in one kilowatt.
- There are 1,000 watt hours in one kilowatt hour. If you look at your electricity bill, you will see that you will be burdened in kilowatt hours for the consumption of the network.
In order to use the simplicity of round numbers, a 500 W solar panel (its performance evaluation or capacity), which is operated for 4 hours under ideal conditions, 2 kilowatt hours (2 kwh) electrical energy:
4 (hours) x 500 (w) = 2,000 watt hours (Wh) or 2 kilowatt hours (2 kWh).
How much solar panel capacity do you need?
How many solar collectors or how much capacity you need to keep your electricity bills low all year round is probably more than you think.
The typical Australian household consumes about 16 to 20 kilowatt hours of electricity per day. Using the example of 500 watt sun collectors, each producing 2 kWh of energy per day, 10 panels should be sufficient.
But it is not.
These 10 solar collectors could produce enough electricity to supply themselves in the middle of a sunny summer day. But then there are winter, cloudy days, tomorrow and evenings to consider; Together with other factors that influence efficiency. A system should be dimensioned to bring it through the winter, and not just an average day.
You will very rarely hear someone complaining about too many solar collectors – but you often hear system owners who want them to have more; And this is the biggest mistake that people make. The Council of Solarquotes founder Finn Peacock is that you completely fill your north, west and east roof with panels if you can.
Fill up! The roof of Finn’s house.
A good installer evaluates your energy consumption profile in the household and recommends a system size that meets your requirements and circumstances.
What to do with excess solar energy
The goal is to catch as many sun rays as possible – especially in the early morning, in the late afternoon and on the evenings and especially in winter. And you do that with a large system, which means that you probably have excess solar energy at other times.
All excess solar energy generated by your panels is usually automatically redirected/exported by your solar inverter into the network network, and you will receive a credit for your electricity bill if you are on the right plan for individual energy dealers. This is referred to as the feed tariff.
But in general, the feed raffles are usually as generous as in the early days of the sun revolution in Australia when systems were much more expensive. Imagine feed-in tariffs more as a beautiful bonus than the main reason for installing a system. The actual value of a solar system consists of self -consumption in order to avoid the payment of power grid flow.
There are other things that you can do with excess solar energy to maximize your value:
A hot water heat pump system
You can also have your inverter set so that he does not export excess if it really bothers you. But if you use the entire solar energy you can, don’t get too annoyed that you are excess. It is a bit like having full rainwater tanks that overcrowded when there is more rain. And you don’t even get feed duties for this spilled water.
Which solar collectors are best available?
For most households, panel specifications such as efficiency, temperature coefficiency and worsening are not too much time to worry if you simply buy a good brand. However, look at the video above or this solar panel guide for further details about these aspects if you want to learn more22.
“Good” does not mean expensive these days, since the flooring brands with better, powerful panels with 25-year guarantees are very affordable. In fact, Finn recently published why Premium Solar Modules are dead.
In order to help you choose and to choose all the options you may already have, Finn has set the Solar Panel brands, which he trusts in this diagram. With the cheaper panels on the left, more expensive on the right.
While good solar collectors are important, the installation is also; Make sure that you have installed you well through an appropriately qualified locals, which is there for you in the unlikely case that you have to assert for guarantee. And a good system has more than just the panels. In this sense, find out everything you need to know about buying a solar power system here.
Footnot
- Funny fact: Watt has an upper case ‘W’ because the measurement units derived from proper names are activated and the unit “Watt” is named after the physicist James Watt. However, other prefixes such as “kilo” are not activated. ↩
- You can also check our Solar Panel comparison table to compare specifications and valued pricing of different models side by side. ↩
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