Inverter Capacities and Specifications: A Solartrician's Guide


Table-mounted Indian Inverter

As a certified and experienced Solartrician, I understand the core importance of selecting the right inverter for your solar power system which if done correctly will not only ensure that you get good value from the overall performance of your system but also have you go big on ROI (return on investment). With a wide range of inverter capacities and specifications available, it can be quite overwhelming to navigate the options and make the right choice best for you. In this article, we'll explore the different inverter capacities currently out there, their specifications, and load ratings to match your requirements and help you make an informed decision when looking to buy one.

Let's get it rolling!

Inverter Capacities: Understanding the Options

Inverters come in various capacities and specifications giving rise to their various functions and overall performances, these metrics are measured in watts (W), to cater to different power requirements. The most common capacities available in the market today include:

Indian Inverter

-700w / 700va / 12v

- 1000W / 1kva / 12v

- 1100W / 1.1kva / 12v

- 1500W / 1.5kva / 12v / 24v

- 1600W / 1.6kva / 24v

- 1700W / 1.7kva /24v 

- 2000W / 2kva / 12v / 48v

- 2500W /2.5kva / 24v

- 3000W/ 3kva /  24v

- 3500W/ 3.5kva / 24v / 48v

- 4000W/ 4kva / 48v

- 5000W/ 5kva / 48v

- 6000W/ 6kva / 48v

- 8000W/ 8kva / 48v

- 10,000W/ 10kva / 48v

- 12,000W / 12kva / 48v/ 96v

Specifications to Consider

When selecting an inverter be it for domestic use or commercial purposes, it is imperative to  consider the following specifications:

 Surge Capacity: 

The maximum power an inverter can handle for a short period (usually 1-2 seconds). Look for an inverter with a surge capacity of at least 200% of the continuous power rating this would ensure that your intended inverter is equipped enough to handle heavy loads like the inductive device which will require twice or trice its rated power for startup. An example of such is your refrigerator, washing machines, blenders, etc.

Continuous Power: 

The maximum power an inverter can sustain for an extended period. Ensure the continuous power rating matches your system's requirements. This is very crucial considering the different modes of application, getting an inverter that has a good continuous power rating not only enhances a smooth operation but also allows for an efficient power conversion from DC to AC. 

 Peak Efficiency: 

The highest efficiency an inverter can achieve. Opt for an inverter with a high peak efficiency (>95%) to minimize energy losses. Energy loss is one factor that's inevitable when it comes to renewables the best form of protection against this is to minimize it as low as possible, to achieve this it is important to settle for an inverter that's high in peak efficiency.


The type of waveform produced by the inverter (e.g., pure sine wave, modified sine wave, or square wave). Pure sine wave inverters are ideal for sensitive electronics and grid-tie systems. They can produce an output that is similar to the grid and are the best choice for a wide range of appliances, on the other hand, modified sinewave which is becoming seemingly less popular is suitable for less power-consuming equipment like your computers, radiosets and all.


The input and output voltage ratings. Ensure the inverter's voltage ratings match your system's requirements. A standard output voltage of 180 to 250 is required for basic appliances and as such your inverter choice must match that output, however, the input voltage is where there needs to be some technicality involved, you must choose your inverter according to your overall system voltage, your overall system voltage is determined by the open circuit voltage of your solar panels if they are included in your system and your battery bank capacity, be it a 12v, 24v, 36v or 48v as the case may be.


The operating frequency (usually 50Hz or 60Hz). Verify the inverter's frequency matches your local grid frequency. This is very important to ensure the seamless operation of your inverter when there's a need to connect to the grid or any other charging source.

Maximum Power Point Tracking (MPPT): 

The ability to optimize energy harvesting from your solar panels. Look for an inverter with advanced MPPT algorithms for maximum energy yield.


The inverter's grounding configuration (e.g., positive, negative, or floating). Ensure the grounding configuration matches your system's requirements. Getting an inverter with proper grounding is of utmost importance as this would ensure that 


Compliance with international standards (e.g., UL 1741, IEEE 1547, and IEC 62116). Verify the inverter meets relevant certifications for your region.

Pure sinewave Inverter/charger

Load Ratings: Understanding Your Power Needs

To determine the right inverter capacity for your needs, consider the total wattage of the devices you want to power. Here are some general guidelines that would help you make the right choice:

700W-1700W: Suitable for small loads like laptops, TVs, game consoles, lights, and small appliances.

2000W-3000W: Ideal for medium loads like refrigerators, blenders, small washing machines, and pumps.

3000W-5000W: Suitable for larger loads like air conditioning, large washing machines, deep freezers industrial equipment, motors, and heavy-duty appliances.

5500W and above Ideal for heavy-duty applications, commercial use, or large-scale power backup systems.

Inverter Selection Tips


Select an inverter with a capacity that matches your system's requirements to avoid oversizing or undersizing. Sizing is key when making a choice for an inverter and getting the exact size to match your load capacity remains an integral process.


Ensure the inverter is compatible with your solar panels, battery bank (if applicable), and other system components. Compatibility is a key one to look out for too, ensuring that your system is on par with your inverter is a very important factor.


Opt for an inverter with high efficiency to minimize energy losses and reduce heat generation. This is important not just for your inverter alone but also for your battery bank as well.


Consider additional features like monitoring, remote control, and grid-tie functionality (if applicable).


Choosing the right inverter capacity and specifications is crucial for efficient and reliable solar power systems. By understanding your load requirements and considering the specifications outlined above, you can select the perfect inverter for your needs. Remember to always consult with a certified Solartrician for personalized advice and installation.

What We Do: Design Installation, Repair, and Maintenance Of Solar and Inverter Systems. Reach us on 09014789125, Whatsapp, or calls

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