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Grid Connected Inverters

What are solar inverters for grid connection?

A solar grid connection inverter is an electronic device that allows feed into a power grid the energy generated by a solar kit. The solar PV module kit connects directly to the input of the inverter and this directly to the grid connection (with its mandatory protections), synchronizing with this to allow the feed in.

Grid Connected Inverters

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  • Brand: SolaXPower

Solar Inverter SolaX Power X3-MIC-15.0-G2

Grid-tied solar inverter SolaX Power of 15000W three-phase.

The inverter line of the SolaX Power brand of pure sine wave offers superior performance for many applications. It stands out from the rest in its clean sinusoidal interference output, which allows SolaX to ensure proper operation in sensitive equipment such as displays, measuring devices.

The robust electronics and the appropriate mechanical design make SolaX Power inverters the best choice in terms of reliability. Designed for a long life with protection against short circuits, overloads and high temperature, they will provide trouble free operation for many years. Warranty of 5 years of product and CE certificate.

Solar Inverter SolaX Power X3-MIC-12.0-G2

Grid-tied solar inverter SolaX Power of 12000W three-phase.

The inverter line of the SolaX Power brand of pure sine wave offers superior performance for many applications. It stands out from the rest in its clean sinusoidal interference output, which allows SolaX to ensure proper operation in sensitive equipment such as displays, measuring devices.

The robust electronics and the appropriate mechanical design make SolaX Power inverters the best choice in terms of reliability. Designed for a long life with protection against short circuits, overloads and high temperature, they will provide trouble free operation for many years. Warranty of 5 years of product and CE certificate.

Solar Inverter SolaX Power X3-MIC-8.0-G2

Grid-tied solar inverter SolaX Power of 8000W three-phase.

The inverter line of the SolaX Power brand of pure sine wave offers superior performance for many applications. It stands out from the rest in its clean sinusoidal interference output, which allows SolaX to ensure proper operation in sensitive equipment such as displays, measuring devices.

The robust electronics and the appropriate mechanical design make SolaX Power inverters the best choice in terms of reliability. Designed for a long life with protection against short circuits, overloads and high temperature, they will provide trouble free operation for many years. Warranty of 5 years of product and CE certificate.

Solar inverter Solax X1-BOOST G3 6.0T kW

Single-phase solar inverter for grid connection from Solax. It has a power of 6000W AC with 2 MPPT and a current of 14 A per input with natural cooling. The X1-BOOST family stands out for its design, connectivity and simplicity.

These inverters have a very lightweight design which aims to make as little noise as possible. Two compatible wattmeters, the Chint and the Eastron, are available for zero injection. The inverter is controllable via mobile or internet as it includes a wifi device. In case there is no internet available, you can connect with your mobile, tablet or pc to the inverter\'s own network or with a RJ45 network cable. 

5 year product warranty.

Solar inverter Solax X1-BOOST G3 5.0 kW

Single-phase solar inverter for grid connection from Solax. It has a power of 5000W AC with 2 MPPT and a current of 14 A per input with natural cooling. These inverters stand out for their design, connectivity and simplicity.

The X1-BOOST family has a very lightweight design which aims to make as little noise as possible. Two compatible wattmeters, the Chint and the Eastron, are available for zero injection. The inverter is controllable via mobile phone or internet as it includes a wifi device. In case there is no internet available, you can connect with your mobile phone, tablet or pc to the inverter\'s own network or with a RJ45 network cable. 

5 year product warranty.

Solar inverter Solax X1-BOOST G3 3.0 kW

Single-phase solar inverter for grid connection from Solax. Power of 3000W AC with 2 MPPT and a current of 14 A per input with natural cooling. The X1-BOOST line stands out for its design, connectivity and simplicity.

The X1-BOOST inverters have a very lightweight design which aims to make as little noise as possible. Two compatible wattmeters, the Chint and the Eastron, are available for zero injection. The inverter is controllable via mobile phone or internet as it includes a wifi device. In case there is no internet available, you can connect with your mobile phone, tablet or pc to the inverter\'s own network or with a RJ45 network cable. 

5 year product warranty.

Solar Inverter Solax X1 – Mini – 0.7 – G3

Perfect single-phase grid connected photovoltaic inverter, for places with limited footprint, since the X1 - Mini – 0.7 reaches up to 96,5% efficiency with a very compact design and reduced dimensions. The power output can reach up to 700W AC, being optimization by 1 MPPT. It has been designed to plug-in up to a maximum input current of 12A and a voltage of 230V, additionally it starts with low voltages from 65V. It is equipped with convection cooling, with a standby energy consumption lower than 1W. This small inverter also includes protections against over-currents, overloads, DC insulation impedance monitoring, ground fault monitoring, DC injection monitoring and RCD protection and high temperatures.

Solar Inverter Solax X1 – Mini – 1.1 – G3

In stock

That\'s perfect inverter the X1 Mini 1.1 achieves an efficiency of up to 96.5% with a very compact design and small dimensions. The output power can reach up to 1100W AC, with optimization by 1 MPPT. It allows up to a maximum input current of 12A and a voltage of 230V, although it starts with low voltages from 65V. It is equipped with convection cooling, with a standby consumption of less than 1W. This little guy inverter it also includes overcurrent protection, overload protection, DC isolation impedance monitoring, ground failure monitoring, DC injection monitoring and RCD and high temperature protection.

Solar Inverter Solax X1 – Mini – 1.5 – G3

Perfect single-phase grid connected photovoltaic inverter, for places with limited footprint, since the X1 - Mini – 1.5 reaches up to 96,5% efficiency with a very compact design and reduced dimensions. The power output can reach up to 1500W AC, being optimization by 1 MPPT. It has been designed to plug-in up to a maximum input current of 12A and a voltage of 230V, additionally it starts with low voltages from 65V. It is equipped with convection cooling, with a standby energy consumption lower than 1W. This small inverter also includes protections against over-currents, overloads, DC insulation impedance monitoring, ground fault monitoring, DC injection monitoring and RCD protection and high temperatures.

Solar Inverter Solax X1 – Mini – 2.0 – G3

Perfect single-phase grid connected photovoltaic inverter, for places with limited footprint, since the X1 - Mini – 2.0 - G3 reaches up to 96,5% efficiency with a very compact design and reduced dimensions. The power output can reach up to 2000W AC, being optimization by 1 MPPT. It has been designed to plug-in up to a maximum input current of 12A and a voltage of 230V, additionally it starts with low voltages from 65V. It is equipped with convection cooling, with a standby energy consumption lower than 1W. This small inverter also includes protections against over-currents, overloads, DC insulation impedance monitoring, ground fault monitoring, DC injection monitoring and RCD protection and high temperatures.

Solar Inverter Solax X1 – Boost – 3.0 – T

Awesome single-phase wave photovoltaic inverter for grid connection. The Solax manufacturer has surprised us with a compact design and robust performance, reaching efficiencies up to 97%. The X1 - Boost - 3.0 - T model, allows an output power up to 3000W AC and optimal synchronizations with the grid thanks to its 2 MPPT. The product warranty is 5 year and it is protected. Including the latest technologies available on the market such as protection against overcurrents, overloads, DC insulation impedance monitoring, ground fault monitoring, DC injection monitoring and RCD protection and high temperatures, which give it a long useful life, with no maintenance, and IP65 protection.

Solar Inverter Solax X1 – Boost – 3.3 – T

Awesome single-phase wave photovoltaic inverter for grid connection. The Solax manufacturer has surprised us with a compact design and robust performance, reaching efficiencies up to 97%. The X1 - Boost - 3.3 - T model, allows an output power up to 3300W AC and optimal synchronizations with the grid thanks to its 2 MPPT. The product warranty is 5 year and it is protected. Including the latest technologies available on the market such as protection against overcurrents, overloads, DC insulation impedance monitoring, ground fault monitoring, DC injection monitoring and RCD protection and high temperatures, which give it a long useful life, with no maintenance, and IP65 protection.

Solar Inverter Solax X1 – Boost – 4.2 – T

Awesome single-phase wave photovoltaic inverter for grid connection. The Solax manufacturer has surprised us with a compact design and robust performance, reaching efficiencies up to 97%. The X1 - Boost – 4.2 - T model, allows an output power up to 4200W AC and optimal synchronizations with the grid thanks to its 2 MPPT. The product warranty is 5 year and it is protected. Including the latest technologies available on the market such as protection against overcurrents, overloads, DC insulation impedance monitoring, ground fault monitoring, DC injection monitoring and RCD protection and high temperatures, which give it a long useful life, with no maintenance, and IP65 protection.

Solar Inverter Solax X1 – Boost – 5.0 – T

Awesome single-phase wave photovoltaic inverter for grid connection. The Solax manufacturer has surprised us with a compact design and robust performance, reaching efficiencies up to 97%. The X1 - Boost – 5.0 - T model, allows an output power up to 5000W AC and optimal synchronizations with the grid thanks to its 2 MPPT. The product warranty is 5 year and it is protected. Including the latest technologies available on the market such as protection against overcurrents, overloads, DC insulation impedance monitoring, ground fault monitoring, DC injection monitoring and RCD protection and high temperatures, which give it a long useful life, with no maintenance, and IP65 protection.

Solar Inverter SolaX Power X3- MIC-4.0-T

In stock

Grid-tied solar inverter SolaX Power of 4000W threephase.

The inverter line of the SolaX Power brand of pure sine wave offers superior performance for many applications. It stands out from the rest in its clean sinusoidal interference output, which allows SolaX to ensure proper operation in sensitive equipment such as displays, measuring devices.

The robust electronics and the appropriate mechanical design make SolaX Power inverters the best choice in terms of reliability. Designed for a long life with protection against short circuits, overloads and high temperature, they will provide trouble free operation for many years. Warranty of 5 years of product and CE certificate.

Solar Inverter SolaX Power X3- MIC-5.0-T

Grid-tied solar inverter SolaX Power of 5000W threephase.

The inverter line of the SolaX Power brand of pure sine wave offers superior performance for many applications. It stands out from the rest in its clean sinusoidal interference output, which allows SolaX to ensure proper operation in sensitive equipment such as displays, measuring devices.

The robust electronics and the appropriate mechanical design make SolaX Power inverters the best choice in terms of reliability. Designed for a long life with protection against short circuits, overloads and high temperature, they will provide trouble free operation for many years. Warranty of 5 years of product and CE certificate.

Solar Inverter SolaX Power X3- MIC-6.0-T

Grid-tied solar inverter SolaX Power of 6000W threephase.

Inverter three phase SolaX Power of 6000W with 2 MPPT with efficiency of 99,9%. Suitable for residential network connection installations of nominal 600 V input. The X3 de SolaX line stands out for its variety of configurations, wide MPPT voltage range and its light and compact structure. Designed for a long life with protection against short circuits, overloads and high temperatures, they will provide trouble-free operation in your solar installation for many years. Product for solar installations with excellent price and quality. Warranty of 5 years of productand CE certificate.

Solar Inverter SolaX Power X3-MIC-7.0-T

Grid-tied solar inverter SolaX Power of 7000W threephase.

The inverter line of the SolaX Power brand of pure sine wave offers superior performance for many applications. It stands out from the rest in its clean sinusoidal interference output, which allows SolaX to ensure proper operation in sensitive equipment such as displays, measuring devices.

The robust electronics and the appropriate mechanical design make SolaX Power inverters the best choice in terms of reliability. Designed for a long life with protection against short circuits, overloads and high temperature, they will provide trouble free operation for many years. Warranty of 5 years of product and CE certificate.

Solar Inverter SolaX Power X3-10.0P-T-D(N)

Grid-tied solar inverter SolaX Power of 10.000W threephase.

Inverter three phase SolaX Power of 10.000W with 2 MPPT with efficiency of 97%. Suitable forresidential network connection installations of nominal 600 V input. The X3 de SolaX line stands out for its variety of configurations, wide MPPT voltage range and its light and compact structure. Designed for a long life with protection against short circuits, overloads and high temperatures, they will provide trouble-free operation in your solar installation for many years. Product for solar installations with excellent price and quality. Warranty of 5/10 years of productand CE certificate.

Wattmeter for Solax X1-Boost, X1-Hybrid and SAJ R5

Chint DDSU666 Single Phase Wattmeter

ONLY AVAILABLE WITH THE PURCHASE OF THE INVERTER

The Chint single-phase wattmeter, model DDSU666, is a wattmeter that allows you to set up the calibrated zero feed-in ("vertido cero"). The device is calibrated to measure the energy that arrives or leaves the whole house. This wattmeter is used with the SolaX X1-Boost and X1-Hybrid inverters and the SAJ R5 inverters.

Wattmeter for Solax X1-Boost, X1-Hybrid and SAJ R5

Chint DDSU666 Single Phase Wattmeter

ONLY AVAILABLE WITH THE PURCHASE OF THE INVERTER

The Chint single-phase wattmeter, model DDSU666, is a wattmeter that allows you to set up the calibrated zero feed-in ("vertido cero"). The device is calibrated to measure the energy that arrives or leaves the whole house. This wattmeter is used with the SolaX X1-Boost and X1-Hybrid inverters and the SAJ R5 inverters.

More on grid-connected solar inverters

Grid-connected solar inverters are the most common and developed in the industry, although hybrid solar inverters are becoming increasingly popular. As their name suggests, they should be used when our solar installation is connected to the grid. These types of inverters can be used for small residential and commercial installations as well as for large solar plants or solar farms.

The main difference between these types of solar inverters is that they need an electrical grid to provide them with the frequency and voltage parameters in order to synchronise with them. Because these inverters are virtually and actually linked to the grid, they must be synchronised to avoid any decoupling or distortion to the internal grid of the house or building or to the general power grid. This means that when there is no grid, these solar inverters cannot operate. To the usual question "If the power goes out at home, will my solar installation be able to supply energy? The answer is NO. In other words, if there is a power cut in the grid, a grid-connected solar inverter stops working (as long as it does not have a specific function to work in "off grid" mode).

The working voltage of these low power inverters (3000W, 5000W and up to 10,000W) on the DC side (solar panels) is variable, but usually ranges between 400V and 1000V and each inverter MPPT input or string usually works in ranges between 80V and 150V. It should be noted that depending on the manufacturer and configuration of the inverter these values may vary. 

Grid connection inverters, as is usual with string inverters, can be oversized on the DC or solar side. This means that we can connect a total power of panels (also called peak) higher than the nominal AC output power of the inverter. Normally, grid-connected solar inverters allow an oversizing of the solar power of between 30% to 50% over the nominal power. 

The output voltage and frequency on the AC side of this type of inverter can vary quite a lot due to the fact that the same model can generally be used in different countries. It is therefore common to see that this type of inverter has variable output frequency values (50Hz or 60Hz) and different voltage values (180V, 220V, 230V, 240V). This flexibility in the output parameters allows this type of inverter to adapt to the different grids to which they are connected.

In the case of Spain we will be working in a frequency of 50Hz and output voltage of 220V/230V. As a general rule, the inverters we sell in Tienda Solar are suitable for use in Spain. If you want to use them in other countries you should check that the electrical characteristics are also valid in your country. If you have any doubts, you can always contact us.

Grid connection inverter monitoring system:

It is very common for grid-connected inverters to have an integrated monitoring system that allows the production of the solar installation and the inverter's operating parameters to be tracked. These systems represent a great advantage for the owner as they provide relevant information on the performance of the solar plant, any faults that the inverter may have and consequently act correctly so that energy production is as efficient as possible.

It is important that grid-connected inverters generate electricity and initially feed it into the internal grid of the house/industry so that it can be consumed instantly. The distribution of the energy via the internal grid and according to the consumption of the appliances is automatic. In other words, the network self-balances the distribution of electricity autonomously to the different consumption points. The monitoring system makes it possible to visualise instantly which loads consume the most.

If the loads consume more than the solar generation, the grid will have to provide the energy deficit in order to keep the loads running. Again, this self-management is done automatically without us having to program or manage anything. The monitoring system also shows the energy balance and allows us to see what percentage of the consumption is covered by solar generation and what percentage is covered by the grid (using a wattmeter).

On the other hand, if the connected loads do not consume the total amount of energy generated by the solar installation, the surplus is automatically fed into the grid. If for some reason we do not wish to discharge our surplus, we can programme the inverter (if it has this function) or add an additional element called a wattmeter if our solar inverter does not have the "zero discharge" function. 

In either case, either by means of the function included in the inverter or the wattmeter, the inverter adjusts its working point (MPPT) to generate the output power corresponding to the instantaneous consumption. In this way the inverter makes sure to match the consumption to the solar production. As mentioned above, the wattmeter, in addition to programming the inverter for "zero discharge" mode, is the element in charge of determining the power extracted from the grid for consumption (home or industry).

How to feed energy into the grid?

In order to feed energy into the grid, it is necessary to have a renewable energy generation system (such as solar panels or wind turbines) and a grid-tied inverter to synchronise the generated energy with the conventional electricity grid.

The general steps for feeding power into the grid are explained below:

  • - Power generation: Install solar panels or another source of renewable energy generation on your property. These panels or turbines will convert energy from the sun or wind into electricity in the form of direct current (DC).
  • - Grid-tie inverter: Make sure you have a suitable grid-tie inverter for your renewable energy generation system. This inverter converts the direct current (DC) generated by the solar panels or renewable source into alternating current (AC) which is the form of energy used in the conventional electricity grid.
  • - Synchronisation with the grid: The solar inverter is designed to synchronise with the frequency and phase of the grid. When properly connected, the inverter detects the presence of the grid and ensures that the power generated is in phase with the grid.
  • - Power injection: Once the inverter is synchronised with the grid, it begins to inject the power generated by the solar panels into the grid. The energy flows from the solar panels to the inverter and then to the electrical system of your home or business. If generation is greater than demand as discussed above, the excess energy is dumped into the grid.
  • - Metering and balancing: In some countries, there are bi-directional metering systems that record the amount of energy they inject into the grid. Depending on local regulations and compensation policies, you may be able to receive credits or compensation for the energy you feed into the grid at times when you are generating more than you consume.

It is important to note that the process of feeding energy into the grid may be regulated by local or national authorities, and you need to make sure you comply with the requirements and regulations in your area before connecting your system to the grid. It is always advisable to work with qualified professionals for the installation and configuration of the power generation system and the grid-tie inverter.

Each country is different and has its own particularities, but as a general rule it is necessary that the solar inverter used complies with the current regulations of the country in question and in some cases that it has the corresponding certificates requested by the electricity companies or the competent state authority. 

It is important that the grid feed-in and the ease of doing so will usually depend on the nominal power of the solar installation. Countries usually stipulate power ratings for solar installations and the corresponding administrative procedures. For which power range the requirements for solar inverters may vary.

What is the difference between a stand-alone PV system and grid-connected systems?

A stand-alone/isolated PV system and a grid-connected PV system are two different approaches to harnessing solar energy. The main difference is whether the system is connected to the grid or whether it operates independently with local storage. Each approach has its advantages and disadvantages, and the choice depends on the energy needs, location and objectives of the system owner.

What are the characteristics of an On-Grid Photovoltaic System?

The main characteristics that differentiate a grid-connected PV system are:

  1. Grid connection: A grid-connected PV system is integrated with the public electricity grid. The electricity generated is first used to meet local needs, and any surplus is fed into the grid.
  2. No Storage Requirement: In a grid-connected system, there is no need for storage systems, such as batteries, as the grid acts as a virtual "store". Electricity can be taken from the grid when solar generation is insufficient.
  3. Grid Benefits: Grid-connected system owners can generate energy credits or even receive payments for surplus electricity they feed into the grid. This can make the system more economically attractive.
  4. Less Dependence on Fossil Fuels: By using solar power, grid-tied systems reduce dependence on fossil fuels and contribute to cleaner energy generation.

At Tienda Solar we have a wide range of grid-tied inverters. From cheap solar inverters to higher ranges with high international prestige brands. If you have any questions please do not hesitate to contact us through info@tienda-solar.es