1. Advantages of Pure Sine Wave and Modified Sine Wave Inverters

The advantages of these two types of inverters are different, however, both pure sine wave inverters and modified sine wave inverters are devices that convert direct current into alternating current (AC). The difference is that the output of a pure sine wave inverter is exactly the same as that of the alternating current provided by the power grid, while the output of a modified sine wave inverter is close to sinusoidal waveforms but is not exactly the same. The advantages of each of the two types of inverters are summarized below:

1.1 Pure sine wave inverter

1.1.1 High stability

Due to the special design of the pure sine wave internal, resulting in its electrical performance is very stable, can provide stable power to the appliances, the failure rate is lower compared to the corrected sine wave inverter, and therefore can be applied to the higher requirements of the power quality of the occasions, such as your home use of microwave ovens and refrigerators, such as the use of AC motors, most of the appliances using the pure sine wave inverters.

1.1.2 Friendly to electrical equipment

As the waveform of pure sine wave output is high-quality sine wave, and the waveform of city wave is sine wave, the waveform of the two kinds is very close, which makes the pure sine wave inverter more compatible with basically all the AC appliances and electronic equipments, so it won’t lead to the decline of the performance of the equipments or damage them, and it is very friendly to the electrical equipments, and it will not lead to the decline of the performance of the equipments or damage them. If you are using more expensive appliances, then pure sine wave inverter is undoubtedly a better choice.

1.2 Modified Sine Wave Inverter

1.2.1 Low cost

Modified Sine Wave inverters are far less expensive to produce and design than pure Sine Wave inverters. According to the data, the market price of pure sine wave inverter is about 160 to 1000 dollars, and the market price of modified sine wave inverter is about 60 to 650 dollars, in the case of the same brand and the same model, the price of modified sine wave inverter is about 30% less than that of pure sine wave inverter, if your budget is not very sufficient, then you can choose the lower cost modified sine wave inverter. 

1.2.2 Smaller size and weight

Modified Sine Wave inverters do not have a complex internal structure, which results in the Modified Sine Wave inverter being smaller in size and weight than a pure Sine Wave inverter. For example, a 2kW pure Sine Wave inverter weighs about 19kg and has a volume of about 1.7 cubic feet, whereas a Modified Sine Wave inverter weighs about half the weight and volume of a pure Sine Wave inverter, which makes it more convenient to carry and install a Modified Sine Wave inverter.

2. Which inverter is right for your solar system?

Both types of inverters can be used for your solar system, but the pure sine wave inverter is more suitable for your solar system than the pure sine wave inverter.

First of all, while it is true that pure sine wave inverters are more expensive than modified sine wave inverters, pure sine wave inverters will not cause any damage to your solar system.

For example, a 10kw solar system costs about $5,000. If you choose a pure sine wave inverter, your solar system can be used for a few more years, knowing that a 10kw solar system can produce about 14,000 kWh of electricity under four hours of effective light per day, and that the cost of electricity in the U.S. is about $0.16 per kWh, you can save $2,240 per year. That’s a savings of $2,240 a year, which is a lot more than the difference of a few hundred dollars between the two inverters.

Secondly, a modified sine wave inverter has a shorter lifespan than a pure sine wave inverter. A pure sine wave inverter has a lifespan of about 8 years, while a modified sine wave inverter has a lifespan of about 5 years, and a modified sine wave inverter is more prone to breakage, so choosing a modified sine wave inverter means that you will have to spend more time and effort in the later stages of the process.