How do I choose the right solar inverter?

Solar panels capture sunlight and convert it into electricity. However, this electricity cannot be used directly by our devices. This is where a key component of the solar installation comes into play: the inverter. Often overlooked, it is nevertheless essential.

Choosing the right solar inverter allows you to maximize the efficiency of your solar installation. An unsuitable inverter can lead to energy losses and overall poor performance of your photovoltaic system.

In this article, we will explain in simple terms what a solar inverter is, what it is used for, and how to choose the right one for your solar project.

What is a solar inverter?

The solar inverter is an indispensable device in a photovoltaic installation. Its main role is to convert the electricity produced by the solar panels, known as direct current (DC), into alternating current (AC). Alternating current is the type of electricity we use in our homes to power devices like televisions, refrigerators, or computers.

In short, without an inverter, the electricity produced by your panels cannot be used in your home.

The essential role of the inverter in a solar installation

Power conversion:

As mentioned, the inverter converts the direct current from the solar panels into alternating current, which is compatible with your electrical devices.

Optimization of energy production:

The inverter continuously adjusts the electricity production of the panels to ensure they operate at their optimal output, thanks to a system called Maximum Power Point Tracking (or MPPT).

System protection:

The inverter ensures the safety of your installation. For instance, it cuts off the power supply in case of overload or failure, thus protecting your equipment.

Performance monitoring:

Some inverters are equipped with a monitoring system that allows you to track the energy production of your installation via an app on your phone or computer.

How to choose a solar inverter?

Now that you understand the importance of a solar inverter, here's how to choose the right one:

Assess your power needs

The first step is to assess the power you need. Examine your energy consumption and choose a solar inverter that can handle this load.

It's important that the inverter has power compatible with that of your solar panels. If your panels produce 3000 W, your inverter must be able to handle this power. In general, it is advisable to choose an inverter with slightly higher power than the panels.

Don't forget to take into account future needs, as your electricity consumption may evolve and increase over time.

At I’M Solar, we offer scalable inverters that allow you to add a storage solution to your existing solar installation, or increase the storage capacity of your batteries as your needs evolve.

Type of solar inverter

• Centralized inverter: This inverter is used for large installations, often for businesses or large buildings. It manages all the solar panels at the same time.
  • Advantages: Less expensive for large installations.
  • Disadvantages: If the inverter fails, the whole system stops.
• Micro-inverter: Unlike the centralized inverter, a micro-inverter is installed on each solar panel.
  • Advantages: If a panel has a problem (shade, dirt), the others continue to function normally.
  • Disadvantages: The cost is higher because each panel has its own inverter.
• Hybrid inverter: This type of inverter is compatible with energy storage batteries. It allows electricity to be stored for later use, for example, at night.
  • Advantages: Perfect if you want to make your home more self-sufficient in electricity.
  • Disadvantages: More expensive to purchase, but interesting in the long run if you plan to install batteries.

Efficiency

The efficiency of the inverter is essential. Expressed as a percentage of yield, it indicates the ratio between the power it converts efficiently and the power it consumes.

A good efficiency rating is often between 95% and 98%. This means that only 2% to 5% of electricity will be lost during the conversion. The higher the efficiency, the better the inverter performs, minimizing energy losses.

At I’M Solar, our latest-generation inverters guarantee a maximum yield of up to 99%, depending on the models.

Reliability and warranty

The inverter must be a reliable device, as it is at the heart of your solar installation.

Choose a solar inverter from a reputable brand with a solid warranty. Reliability is crucial to ensure trouble-free operation for many years.

Our new range of I’M Solar inverters comes with a 10-year warranty.

Cost and budget

Set a realistic budget. Solar inverters vary in price from 200€ to 3000€ on average, so make sure to find a balance between quality and cost.

Additional features:

If you want to monitor the production of your panels in real-time or if you plan to add batteries to your installation, make sure the inverter offers these features.

I’M Solar inverters, connected via Wifi to a mobile app, provide you with real-time information to help you optimize production and expenses.

Installation and maintenance

Call a professional:

Installing a solar inverter requires technical expertise. It is recommended to hire an electrician or specialized installer to avoid improper installation or electrical hazards.

Regular maintenance:

Solar inverters require little maintenance, but it is advisable to check them periodically to ensure they are functioning properly and to extend their lifespan.

Troubleshooting: In case of failure, some inverters have a self-diagnosis system that can help you understand what is wrong. If the problem persists, it is better to call a professional.

At I’M Solar, we offer the best inverters on the market

In summary, the solar inverter is an essential component of your solar installation. It ensures that the energy produced by your panels can be used in your home while optimizing and protecting the system. The inverter also helps maximize solar energy self-consumption and allows you to sell surplus energy back to the grid.

Installing and maintaining the inverter requires specialized skills to ensure optimal performance. By monitoring your installation's efficiency and adopting sustainable practices, you can achieve significant energy savings and contribute to the transition to renewable energy sources.

Choosing the right inverter depends on several criteria, such as the size of your installation, your energy needs, and the desired features. Don't hesitate to be contacted by our technical team to help you choose the model best suited to your project.