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Solar Inverter Prices in South Africa

Solar Inverter Prices
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Solar inverters are a vital component of any solar power system, responsible for converting the DC electricity generated by solar panels into usable AC electricity. As the demand for solar energy rises, understanding the factors that influence solar inverter prices becomes crucial.

Solar inverter prices typically range between R10,000 and R80,000 depending on brand an inverter size.

In this comprehensive guide, we will demystify solar inverter pricing, equipping you with the necessary insights to make informed decisions.

We will explore different types of solar inverters, such as string inverters, microinverters, and hybrid inverters, and discuss their price ranges and functionalities. Additionally, we will examine the impact of factors like power output capacity, efficiency ratings, monitoring capabilities, and advanced technologies on the overall cost of solar inverters.

By the end of this guide, you will have gained a comprehensive understanding of solar inverter prices, empowering you to navigate the market confidently and find the ideal solution for your solar energy needs.

Types of Solar Inverters

In South Africa, there are four primary types of solar inverters available: string inverters, microinverters, power optimizers, and hybrid inverters, some with charge controllers and some without a charge controller. Each type offers specific advantages and disadvantages and is suitable for different solar installations. 

Choosing the best solar inverter for the price

Choosing the best solar inverter for price requires careful consideration of various factors. While price is an important aspect, it’s equally crucial to ensure the inverter meets your specific energy needs and provides reliable performance. Here are some key steps to help you select the best solar inverter based on price:

  1. Assess your energy requirements: Determine the power capacity needed for your solar system based on your electricity consumption and the size of the solar panel array.
  2. Research reputable brands: Look for trusted manufacturers of solar inverters, such as Goscor, known for their reliable and high-quality solar equipment.
  3. Compare prices: Obtain quotes from multiple solar inverter suppliers, considering the cost of different types like string inverters, microinverters, or power optimizers. Take note of any additional features, warranties, or efficiency ratings offered.
  4. Consider long-term savings: Evaluate the efficiency of the solar inverter as it can impact long-term energy savings. A more efficient inverter, like those with MPPT charge controllers, can maximize the conversion of DC power from solar panels to AC power for your home or utility grid.
  5. Look for warranty and after-sales support: Check the warranty offered by the manufacturer, especially for components like power optimizers or charge controllers. Ensure that reliable after-sales support is available in case of any issues.
  6. Consult with solar professionals: Seek advice from experienced solar installers who can guide you on the best solar inverter options based on your specific needs, energy storage requirements, and budget.

How do I Calculate What Size Inverter I Need?

Determining the appropriate size of the inverter for your solar power system involves considering factors such as your energy consumption, peak power requirements, and the capacity of your solar panel array. Here’s an example of how to calculate the inverter size required, incorporating relevant keywords:

  1. Determine your maximum power consumption: Identify the highest wattage of electrical appliances or devices you plan to run simultaneously. Add up their power ratings (in watts) to find the total power consumption during peak usage.
  2. Account for inrush or startup currents: Certain appliances, such as refrigerators or air conditioners, may require higher power during startup due to inrush currents. Consider this additional power requirement when calculating the inverter size.
  3. Calculate the total power demand: Add the maximum power consumption from step 1 to the additional power required for inrush currents. This will give you the total power demand in watts.
  4. Account for inverter efficiency: Inverters have efficiency ratings that indicate how effectively they convert DC power from solar panels into usable AC power. Divide the total power demand by the inverter efficiency to estimate the minimum DC power required from the solar panels.
  5. Determine the inverter size: Choose an inverter with a power rating slightly higher than the minimum DC power calculated in Step 4. It’s recommended to have some headroom to accommodate future expansions or fluctuations in power consumption.

For example, let’s say the total power demand of your appliances is 3,000 watts, and the inverter you’re considering has an efficiency rating of 95%, including relevant keywords such as solar power inverter and lithium battery. The minimum DC power required from the solar panels would be:

Minimum DC power = Total power demand / Inverter efficiency

Minimum DC power = 3,000 watts / 0.95 = 3,157 watts (approximately)

In this case, you would choose an inverter with a power rating of at least 3,200 watts, to ensure it can handle the power demand comfortably.

Solar Inverter Price Range

The following solar inverter prices are averages from online availability, prices may vary depending on brand:

  • String Inverters (R8,000 – R30,000)
  • Microinverters (R10,000 – R35,000)
  • Power Optimizers (R6,000 – R25,000)
  • Hybrid Inverters (R15,000 – R80,000) 

InverterPrice (ZAR)
Goscor 1200W Hybrid InverterR5,519
Goscor 3000W Hybrid InverterR7,843
Goscor 5000W Hybrid InverterR15,813
Goscor 5200W Hybrid InverterR16,115
Rebel-Max 5000W Hybrid InverterR24,136
Phocos 5000W Hybrid InverterR26,831
Phocos 8000w Hybrid Inverter R38,331
Solar inverter price table available from Off Grid Power Solutions

What is the biggest influence on solar inverter price?

The biggest influence on solar inverter prices is typically the inverter’s power capacity or rating. In general, the power capacity of the inverter, which determines its ability to handle the energy generated by the solar panel system, directly impacts the solar inverter price. Larger inverters designed to accommodate higher power loads from a solar panel array, such as those used in commercial or utility-scale solar systems, tend to have higher price tags. 

This is because they require advanced technology, robust components, and sophisticated design to ensure efficient conversion of solar energy to usable AC power for the grid. In contrast, smaller inverters suitable for residential solar systems or smaller installations typically have lower solar inverter costs due to their lower power capacities and simpler designs.

Moreover, the type and brand of the inverter also influence the solar inverter price. Different types of inverters, including string inverters, microinverters, and power optimizers, come with varying price ranges. 

Other factors that can affect solar inverter costs include additional features and functionalities. Inverters equipped with features such as integrated energy storage systems, advanced monitoring capabilities, or grid-tie functionality may command higher prices due to the added value they offer.

Market dynamics, including supply and demand, as well as economies of scale, also play a role in determining solar inverter prices. Fluctuations in the availability and costs of raw materials, changes in manufacturing expenses, and competition in the market can influence the pricing of solar inverters.

What is the Lifespan of a Solar Inverter?

The lifespan of a solar inverter can vary depending on several factors, including the quality of the inverter, operating conditions, maintenance, and usage patterns. On average, a well-maintained and high-quality solar inverter can be expected to have a lifespan of around 10 to 15 years.

However, it’s important to note that the lifespan of a solar inverter is typically shorter than that of the solar panel system itself, which can last 25 years or more. This is because inverters are electronic devices with components that may wear out or become less efficient over time.

The specific lifespan of a solar inverter can be influenced by various factors:

  1. Quality: Higher-quality inverters tend to have a longer lifespan. Investing in reputable brands and reliable models can contribute to the durability and longevity of the inverter.
  2. Operating Conditions: The operating environment of the inverter plays a role in its lifespan. Extreme temperatures, excessive humidity, or exposure to harsh elements can impact the longevity of the inverter. Proper installation in a suitable location and adequate ventilation can help mitigate these effects.
  3. Maintenance: Regular maintenance and timely repairs can help extend the lifespan of a solar inverter. Cleaning the inverter, inspecting connections, and addressing any issues promptly can contribute to its longevity.
  4. Usage Patterns: The frequency and intensity of inverter usage can affect its lifespan. Inverters that consistently operate at or near their maximum capacity may have a shorter lifespan compared to those operating within their rated capacity.
  5. Technological Advancements: Over time, advancements in solar inverter technology may lead to more efficient and durable models. Upgrading to newer inverter models can offer improved performance and potentially extend the lifespan of the system.

It’s worth noting that warranties provided by manufacturers typically cover solar inverters for a specific period, which can vary from 5 to 10 years or more, depending on the brand and model. This warranty period can give an indication of the expected lifespan of the inverter.

Regular monitoring of the inverter’s performance, coupled with proactive maintenance and timely replacements when necessary, can help ensure optimal functionality and maximize the lifespan of the solar inverter in a solar energy system.

What size inverter do I need to run a house?

Determining the size of the inverter needed to run a house depends on several factors, including your average power consumption, the peak power demands of your household appliances, and the size of your solar panel system (if you have one). Here’s a general approach to calculating the size of the inverter required:

  1. Calculate your average power consumption: Determine the total wattage consumed by your household appliances and electronics on a typical day. This can be done by reviewing your utility bills or using energy monitoring devices. Make sure to consider both essential and non-essential loads.
  2. Determine your peak power demand: Identify the highest power requirement among your appliances. Appliances like air conditioners, refrigerators, or washing machines typically have higher peak power demands during startup or operation. Note down the wattage of the highest-demand appliance.
  3. Consider power factor and efficiency: Take into account the power factor and efficiency of the inverter. Power factor is a measure of how effectively the inverter converts DC power from the solar panels into usable AC power. Efficiency refers to the overall efficiency of the inverter in converting power. Multiply your peak power demand by the reciprocal of the power factor and efficiency to obtain the estimated power requirement for the inverter.
  4. Add a buffer: It’s recommended to add a buffer to your calculated power requirement to account for future expansions or unforeseen power surges. A buffer of around 10-20% is generally sufficient.

For example, if your peak power demand is 5,000 watts and your inverter has a power factor and efficiency of 0.9, the estimated power requirement for the inverter would be:

Power requirement = Peak power demand / (Power factor x Efficiency) Power requirement = 5,000 watts / (0.9 x 0.9) = 6,172 watts (approximately)

In this case, you would need an inverter with a power rating of at least 6,200 watts or higher to comfortably handle the power demands of your house.

It’s important to note that this is a simplified approach, and the specific size of the inverter required may vary based on factors such as the type of inverter (string inverter, microinverter, etc.), voltage requirements, and specific electrical configurations of your house. Consulting with a solar professional or an electrician is recommended to ensure accurate calculations and proper sizing of the inverter for your specific needs.

Where can I buy the best solar inverter for my budget?

Off Grid Power Solutions is a trusted solar solution provider. We are also part of the Goscor Group and have been serving the power-hungry since 1984. You can purchase hybrid inverters or portable solar inverters with built-in solar batteries from us. Most of our solar inverters come with a built-in solar charge controller and all inverters include a reputable warranty. 


In conclusion, understanding solar inverter prices is crucial when considering a solar power system. Factors such as the type of inverter, power capacity, efficiency ratings, and additional features influence the cost. The lifespan of a solar inverter typically ranges from 10 to 15 years. To determine the size needed to run a house, calculate average power consumption, identify peak power demands, and consider power factor and efficiency. Seek professional guidance for accurate sizing.

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