How to choose a good 5kw solar system?

It can be quite difficult when considering how to choose a good 5kw solar system. 5kW solar power systems have become one of the most popular forms of solar systems used in Australia thanks to their size and ability to offset the energy consumption of a standard sized home. On the rare occasion, when you roof’s solar potential is limited, you have a serious energy guzzler in your home and you must consider an energy audit when you go to solar.

5kW solar systems are the minimum system size you should seriously consider if you want to add batteries to your system in the future. Rapidly increasing in popularity, a 5kW solar system gives you unbelievable bang for your buck. This solar power system of choice for medium to large homeowners is the cheapest of all sizes of the solar system, as its cost per kilowatt of all the system sizes is the lowest. It is a big decision to invest in a solar system, so you want to be fully confident that you pick the right one.

Here are the answers to some of the most commonly asked questions when considering how to choose a good 5kw solar system:

How many solar panels will I need?

The 5 kW solar system consists of 18 solar panels based on the standard 275W panels. A modern 5kW solar system comprises between approximately 15 and 20 panels and requires approximately 25 – 35 m2 of roof space, depending on the wattage of the panels and their inclination.

How much electricity does a 5kw solar system produce?

Depending on your location and a range of other factors, a 5 kW solar system generates approximately 20 kWh per day. The average Australian home uses about 16 kWh a day. Assuming a non-shaded south facing array, a 5kW solar power system will generate an average of 14.5 to 23 kWh per day over the year, depending on where it is installed. A typical 5kW solar power output depends on a number of factors, and the actual power output of a 5kW solar power system varies.

These factors include:

  • Whether shade is cast on the panels.
  • Orientation and angle of inclination of the solar panel.
  • The system’s geographical location and the expected daily and annual solar irradiation, as well as cloud cover levels in the area.
  • The performance of each component (e.g. panels and inverters).
  • Overall panel operating temperature.

Note that this would not mean that the installation of a 5kW solar power system will necessarily give you a $0 electric bill, since most homeowners use most of their electricity at night when the there is no sunshine.

How much will I save in a 5kW solar system?

The amount you will save when you install a 5kW solar energy system depends on the geographical location of your solar system. (i.e. the general rule of thumb: sunlight = more power = more savings).

Counterintuitively, the more you actually pay for power, the more money you save using the solar power system over the long term. When you calculate this, remember that the solar energy will reduce your consumption from your most expensive bands of power.

The financial returns of a 5kW solar system are not straight forward. In most instances, however, savings from a 5kW solar system range between $800 per year and $1400 per year in areas with high power prices and a lot of sunshine.

Choosing the right solar panels can be a challenge. But, know that we have provided you with this information, we hope you understand how to choose a good 5kw solar system.