solar inverters south africa
solar inverters cape town

Solar Inverters in South Africa


A solar inverter in South Africa is a device that converts the direct current (DC) output from solar panels into alternating current (AC) electricity that can be used by homes and businesses. Solar panels produce DC electricity, which is then converted into AC by the inverter so that it can be used by electrical appliances or fed back into the power grid.

There are several types of solar inverters in South Africa, including string inverters, microinverters, and power optimizers. String inverters are the most common type and are used in larger solar systems, while microinverters and power optimizers are used in smaller systems.



Solar inverters in Cape Town are solely responsible for more operational functions than any other PV system component. These duties have continued to grow as systems get smarter and increase interaction with the utility grid. So what exactly does a solar inverter do?


  1. Convert DC to AC power
  2. Maximize power output
  3. Interface with the grid
  4. Report on power production
  5. Ensure safe system operation

Types of Solar Inverters in Cape Town


Solar Inverter technologies have changed a lot in recent years. They are more advanced and have become much cheaper. In addition to converting DC to AC, a new technology inverter provides a number of other capabilities and services to ensure that the inverter can operate at an optimal performance level.

These include data monitoring, advanced utility controls, applications, and system design engineering. Inverter manufacturers also provide post-installation services that are integral to maintaining energy production and a high level of performance.

There are different types of solar inverters in Cape Town. To start with, we can break it down into three categories.


  • Grid-Tied
  • Off-Grid
  • Hybrid


Read more: Grid-Tied vs Off-Grid vs Hybrid

PWM vs MPPT Charge Controllers

PWM controllers – a switch that connects a solar array to a battery. The result is that the voltage of the array will be pulled down to near that of the battery.

MPPT controllers – more sophisticated and about 25% more efficient than the PWM as it will adjust its input voltage to harvest the maximum power from the solar array and then transform this power to supply the varying voltage requirement, of the battery plus load.

How Do Solar Inverters Work?

Understanding Solar Inverters

Choosing a Solar Inverter

3 Factors to Consider When Choosing a Solar Inverter

Controlling Maximum Power Output


Solar inverters in South Africa are responsible for continually tracking your solar array’s voltage to figure out the maximum power at which your solar panels operate, ensuring the system produces the most and cleanest power at all times.

There are many different sizes available for inverters. The size required is dependent on the size of the solar panels installed. For example, a 5kW solar power system would require an inverter of similar or larger capacity. At its most basic level, it must be equipped to manage the maximum amount of power the system could generate.


What is the Lifespan of a Solar Inverter?


The lifespan of a solar inverter can vary depending on a number of factors, including:


  • Quality of the inverter
  • Conditions it is exposed to
  • How well it is maintained over time


In general, a high-quality solar inverter should last for at least 10 years, and many can last for up to 20 years or more with proper care.

One of the main factors that can affect the lifespan of a solar inverter is the quality of its components. Cheaper inverters often use lower-quality components that are more prone to failure, which can result in a shorter lifespan overall. On the other hand, higher-end inverters may use more durable components that are designed to last longer, even in harsh conditions.

Another factor that can affect the lifespan of a solar inverter is the environment it is installed in. Inverters that are exposed to extreme temperatures, high humidity, or other harsh conditions may experience more wear and tear over time, which can lead to a shorter lifespan. Similarly, inverters that are exposed to direct sunlight or other forms of weathering may degrade more quickly than those that are installed in more protected locations.


How do I Calculate What Size Inverter I Need?


To calculate the size of inverter you need, there are a few key factors you will need to consider. Here are the steps you can follow:


  1. Determine your power requirements: First, you will need to calculate the total amount of power your system will need to supply. This will include all of the electrical appliances and devices you plan to use, as well as any surge currents they may require.
  2. Determine your voltage requirements: Next, you will need to determine the voltage of the batteries you plan to use. This will typically be either 12, 24, or 48 volts.
  3. Calculate your total power requirements: Multiply your power requirements by the number of hours you plan to use the system each day. This will give you your daily energy requirements in watt-hours (Wh).
  4. Size your inverter: To determine the size of the inverter you need, you will need to choose one that is capable of handling your peak power demands. To do this, add up the maximum wattage of all of the devices you plan to use at the same time. Then, choose an inverter that is rated for at least this amount of power.
  5. Consider efficiency: Finally, it’s important to consider the efficiency of the inverter you choose. Inverters typically have an efficiency rating that indicates how much of the power they consume is converted into usable power. To ensure that you get the most out of your system, look for an inverter with a high-efficiency rating.


By following these steps, you should be able to determine the size of inverter you need to power your system effectively and efficiently. However, if you have any doubts or concerns, it’s always best to consult with a professional to ensure that you choose the right equipment for your needs.


Solar Inverter Prices in South Africa


The price of solar inverters vary depending on the brand, type, and specifications, but they typically range from around R2,000 to over R80,000. However, it is important to note that the cost of the inverter is only one aspect to consider when installing a solar system. Other factors to consider include the size of the solar panel system, electricity usage, and the specific needs of the individual or business. Therefore, it is recommended to consult with a professional installer or supplier to determine the most appropriate and cost-effective solar inverter for your specific requirements.


  1. Deye – R25,000 to R70,000 (5kW – 16kW)
  2. Sunsynk – R25,000 to R150,000 (5kW – 50kW)
  3. SMA Solar Technology – R8,000 to R60,000 (1.5 kW – 25 kW)
  4. Fronius – R12,000 to R75,000 (1.5 kW – 27 kW)
  5. ABB (now FIMER) – R10,000 to R70,000 (1.2 kW – 50 kW)
  6. Victron Energy – R6,000 to R80,000 (500 VA – 15 kVA)
  7. Growatt – R4,000 to R40,000 (1 kW – 20 kW)
  8. GoodWe – R6,000 to R50,000 (1 kW – 25 kW)
  9. SolaX Power – R8,000 to R30,000 (1 kW – 10 kW)
  10. Schneider Electric – R20,000 to R120,000 (3 kW – 80 kW)
  11. Huawei – R10,000 to R60,000 (2 kW – 33 kW)
  12. Sungrow – R6,000 to R50,000 (1 kW – 25 kW)


Please note that these prices are approximate and may change over time or based on different suppliers. It’s essential to research and compare prices from various suppliers to find the best deal for your specific needs. Don’t forget to factor in installation costs and potential government incentives or rebates that can help offset the overall cost of a solar inverter system.


Solar Inverter Installers Cape Town


Solar West Coast solar inverter installers cover a wide area across the West Coast of Cape Town. We can help you build a system that suits your needs and your budget. We build affordable, cost-effective residential and commercial systems.


Solar Panels | Solar Batteries | Hybrid Systems | Off-Grid Systems | Grid-Tied Systems

We Install Inverters In The Following Areas:


LangebaanVredenburg – Saldanha – Hopefield – St Helena Bay – Velddrif – Jacobs Bay – Moorreesburg – Yzerfontein – Cape Town



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  • 3kVA Axpert Inverter MKS 25A 24V

  • 3kVA Growatt Inverter SPF3000TL 24V

  • 5kVA Axpert Inverter MKS 80A 48V

  • 5kVA Growatt Inverter SPF5000TL 48V

  • 5kVA Growatt Inverter SPF5000ES 48V

  • Deye 5KW Hybrid Solar Inverter 48V

  • 3.6kVa Goodwe ES Hybrid Inverter 48V

  • 4.6kW Goodwe ES Hybrid Inverter 48V

  • Deye 8KW Hybrid Solar Inverter 48V

  • 10kW GoodWe 3 Phase Hybrid Inverter

  • Deye 12KW 3 Phase Hybrid Inverter

  • Deye 16kW Hybrid Solar Inverter 48V

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