Everything You Need to Know About a Hybrid 3 phase Solar Inverter

A 3-phase solar inverter is a device that converts DC output from the solar panels into 3 AC waveforms, spaced 120 degrees apart. This power distribution makes 3-phase PV inverters ideal for commercial and industrial installations where energy requirements are higher. They’re of three types, based on the type of solar system you have: on-grid 3-phase solar inverters, off-grid 3-phase PV inverters, and hybrid 3-phase solar power inverters. 

Unlike a single-phase solar inverter that produces 1 AC waveform and is suitable for small households, a 3-phase PV inverter is suited for 3-phase electricity lines. While a single-phase inverter can be in a three-phase property, the opposite isn’t possible in grid-tied systems. For grid-connected solar systems, a three-phase inverter is specifically designed to connect to a three-phase service, not a single-phase one.    

3-phase solar inverters reduce voltage rise and keep loads running smoothly. They also support larger system sizes, making them a better fit for higher energy demand applications like commercial rooftop systems and solar farms.

In this blog, we’ll explain what a 3-phase PV inverter is and how it works, the types of three-phase solar inverters, benefits and limitations, uses, 3-phase inverter price, and a detailed comparison between 3-phase and single-phase inverters so you can choose the one suited to your needs. We will also walk you through the cost of installing a rooftop solar panel system for homes and whether installing an on-grid solar system is worth it.

TL;DR Summary Box: Do I Need a 3-Phase Solar Inverter if I Have 3-Phase Power?

Yes, in grid-connected solar systems, you should use a 3-phase inverter with three-phase power. It matches your supply and spreads power evenly across all phases. If you want backup for 3-phase loads, choose a 3-phase hybrid solar inverter.

Here are the main topics we’ve covered in this guide in detail:

Main Topics	Quick Takeaways
What is a 3-phase PV inverter?	A 3-phase PV inverter turns panel DC into three AC waveforms and connects to a three-phase supply.
What are the types of 3-phase solar inverters?	On-grid inverters, hybrid inverters, and off-grid inverters
What are the benefits of three-phase solar inverters?	They offer balanced export across phases, lower voltage rise, smoother motor/heavy-load operation, and easier scaling to higher kW.
What are the disadvantages of 3-phase solar power inverters?	They are usually more expensive and complex than single-phase solar inverters.
What is the difference between single-phase and 3-phase solar inverters?	Single-phase inverters give one AC wave for a single-phase supply. On the contrary, a 3-phase PV inverter gives three AC waves for a three-phase supply.
What are the key features of a 3-phase solar power inverter?	Multiple MPPTs, surge/arc-fault protection, IP65/66 outdoor rating, and smart monitoring.
What is the 3-phase solar inverter price in India in 2025?	~Rs. 51,000* (4 kW on-grid) to ~Rs. 1.47 lakh (30 kW on-grid)
Is it worth installing an on-grid rooftop solar system at homes?	Yes. They can reduce your electricity bills by more than 90% and save you tens of lakhs of rupees.

*Please note: The 3-phase inverter prices shown above are illustrative for on-grid 3-phase solar inverters only and can change without notice. Final costs depend on brand, exact model, dealer channel, location, type of inverter (on-grid, off-grid, or hybrid), model availability, GST, inverter capacity, and any ongoing promotions.

What is a 3-Phase Solar Inverter and How Does it Work?

A 3-phase solar inverter converts DC power from solar panels into three-phase alternating current (AC) suitable for commercial and industrial electrical systems. The 3 separate AC waveforms are 120 degrees apart to ensure balanced power distribution across all three phases. These inverters usually have three live wires plus a neutral and an earth wire. 

In India, typical low-voltage service is about 230 V single-phase and 400/415 V three-phase at 50 Hz.

• The 3-phase solar inverters can be used with solar systems as large as 100 kW and above. 
• Usually, a single-phase inverter is used for solar systems between 1-10 kW.

Please note: Different DISCOMs cap single-phase net-metered capacity and require three-phase service above that threshold. Many 3-phase solar inverters are also built for 5-8 kW solar systems for residential use. Always check local rules to find out which type of inverter you need. 

If you have a rooftop solar panel system for your home and your annual power consumption is exceptionally high due to the use of multiple high-energy appliances like water pumps, geysers, and multiple ACs, a 3-phase solar inverter might be a better option for you because it spreads power generation across phases. 

How Does a 3-Phase Solar Power Inverter Work?

A three-phase inverter uses fast electronic switches (there are many of them inside) to turn the DC power from the panels on and off very quickly and shape it into three AC waves that are 120° apart. 

Here’s a step-by-step working of a three-phase solar inverter: 

• Step 1 – Sunlight falling on the solar panels is converted to DC electricity: Your solar panels catch sunlight and make direct current (DC) electricity. DC gives a steady one-way flow of electrons. 
• Step 2 – DC power travels to the 3-phase solar PV inverter: The DC from one or more panel strings moves through cables and a safety switch to the inverter. The inverter wakes up, checks wiring and voltages, and only then gets to work.
• Step 3 – The inverter uses the built-in MPPT algorithm for maximum power extraction: The MPPT technology in the inverter constantly adjusts voltage and current to ensure solar panels are delivering the maximum power they can at that moment.
• Step 4 – The inverter creates three AC waveforms: Using very fast electronic switches, the 3-phase solar power inverter chops and shapes the DC into three AC waveforms that are each offset by 120 degrees. That’s what makes it a three-phase supply.
• Step 5 – AC power generated is smoothed: Filters inside the inverter smooth out the switching pulses so the output looks like clean, grid-quality AC.
• Step 6 – Inverter synchronizes with the grid: Before sending power out, the on-grid and hybrid 3-phase solar inverters measure the grid’s voltage and frequency and line up perfectly with it. 
• Step 7 – The power is shared across three separate phases: On a three-phase property, the inverter feeds the L1, L2, and L3 lines, so large loads are shared rather than pushed through a single line. They also have an earth wire for safety. Some 3-phase PV inverters use a neutral wire too. 
• Step 8 – The inverter ensures your home/ business uses solar electricity first: Your appliances use the solar power immediately. Any extra goes through the bidirectional net meter to the grid in an on-grid solar system. In hybrid systems, extra energy charges the lithium batteries and goes to the grid. In off-grid solar systems, extra solar power is used to charge the batteries.

What Are the Types of 3-Phase Solar Power Inverters?

The three main types of 3-phase solar inverters are on-grid 3-phase inverters, off-grid 3-phase inverters, and hybrid 3-phase inverters. On-grid ones are attached to the utility grid. Hybrid ones are attached to the utility grid and lithium batteries. The off-grid ones are connected just to batteries, not the utility grid. 

Before we walk you through the details of each type, here’s a comparison between the three types:

Feature	On-Grid 3-Phase PV Inverter	Hybrid 3-Phase PV Inverter	Off-Grid 3-Phase PV Inverter
Grid connection	Required	Required (switches between batteries and the grid)	Not required
Battery storage	Not needed.	Needed.	Needed.
Power during outages	No.	Yes.	Yes.
Initial cost	Lowest	Medium	Highest
Net metering	Yes, with full-support.	Yes, with limitations.	Not applicable since it’s not connected to the grid.
Installation complexity	Simple	Moderate	Complex
Best for	Commercial installations	Commercial and residential installations	Off-grid and remote locations without a power grid

Now, let’s check out the three types in detail.

On-Grid 3-Phase Solar Inverters

On-grid three-phase inverters are designed to work exclusively with utility grid connections. Their main purpose is to convert solar DC power into three phases of grid-compatible AC electricity.

Here are the primary characteristics of on-grid 3-phase inverters:

• They have a 100% grid dependency: They require an active utility connection to operate.
• Full net metering compatibility: They allow excess power export to the grid. At night or during low sun, your home draws power from the grid.
• They have an automatic shutdown feature: Anti-islanding is the safety feature that results in disconnection during grid outages. This is done to ensure linemen working on faulty lines aren’t at risk of getting electrocuted. 

Hybrid 3-Phase Solar Inverters

Hybrid 3-phase PV inverters combine grid functionality with a battery storage system. These inverters are capable of charging the batteries while supplying any excess energy to the grid. 

Here are some advanced features of three-phase hybrid solar inverters:

• They support batteries: Hybrid 3-phase solar inverters have built-in solar panel charge controllers for various battery types to ensure safe charging.
• They are smart enough to prioritize power source: While these inverters ensure solar power is used first, there’s also user-configurable power source selection. You can choose between solar, grid, and batteries based on your needs.
• They work during power outages: During outages, they run backed-up circuits from the battery. Backup capacity is limited by inverter capacity and battery size, and requires proper wiring. 

Off-Grid 3-Phase Solar Inverters

Off-grid 3-phase PV inverters operate independently from the utility grid. It makes them ideal for remote locations or facilities seeking complete energy autonomy.

Here are the essential capabilities of off-grid 3-phase solar inverters: 

• They support standalone operation: It means that they function without a grid connection. 
• They’re dependent on the battery: They require adequate battery capacity to ensure a continuous power supply. 
• They offer load prioritization: These inverters can manage power distribution during low solar conditions.

What is the Difference Between Single-Phase and 3-Phase Solar Inverters?

The key difference between single-phase and 3-phase solar inverters lies in power distribution. Single-phase solar inverters deliver power through one alternating current waveform. On the other hand, a 3-phase solar power inverter distributes power across three separate waveforms, each 120 degrees apart. 

Let’s check out how the two differ from each other in detail:

Feature	Single-Phase Solar Inverter	3-Phase PV Inverter
Definition	A single-phase solar inverter converts DC from solar panels into one AC waveform and connects to a single-phase supply.	A 3-phase solar inverter converts DC from panels into three AC waveforms (each 120° apart) and connects to a three-phase supply.
AC output	1 AC waveform	3 AC waveforms, 120° apart
Typical service in India	~230 V, 50 Hz single-phase	~400/415 V, 50 Hz three-phase
Where does it connect?	Single-phase utility service	Three-phase utility service
Use on a three-phase property	Allowed (usually on one phase) Utility may ask for phase balancing	Native fit Shares export across all three phases
Use on a single-phase property	Yes, that’s what it’s for.	Not for grid-tie Needs a 3-phase service
Typical power capacity and load handling	~1-10 kW Load balancing for single-phase only	~5-100+ kW Load balancing across all three phases
Power output smoothness	Pulsating	Continuous and smooth
Wiring requirements	2-wire + earth Live (L) Neutral (N) Earth (PE)	L1, L2, L3, and Earth (PE) Some setups also use Neutral (N)
Future expansion (adding more kilowatts)	Practical up to local limits May need multiple units on different phases	Scales well to higher kW on 3-phase services
ROI for large solar energy systems	Lower	Higher
Motor and heavy loads	All current flows on one line Large motor starts can stress that phase	Load/current shared across three lines Smoother for motors and mixed loads
Voltage rise on export	Higher risk at larger kW on one phase	Lower for the same total kW, spread across phases
Best when	You have single-phase service Small-medium solar energy systems Lowest upfront cost matters	You have 3-phase service Larger solar PV systems You want better phase balance Rooftop solar for housing societies
Avoid when	You need high kW on a 3-phase site with strict balance/voltage limits	You only have single-phase utility service and don’t plan to upgrade

When Should You Choose a Single-Phase Solar Inverter?

Choose a single-phase solar inverter in the following scenarios:

• Your property has a single-phase electrical supply
• Solar system size is under 10 kW
• Installation is for standard residential use
• Budget is a primary constraint
• Simple installation is preferred

When Should You Choose a 3-Phase Solar Inverter?

Choose a 3-phase solar inverter in the following scenarios:

• Your property has a three-phase electrical supply
• Solar system size exceeds 10 kW
• Installation is for commercial or industrial use
• Maximum efficiency is required
• Future expansion is planned
• Heavy electrical loads are present

Technologies Used in 3-Phase Solar Inverters

The two main technologies are PWM and MPPT. These are both algorithms that are applied to most modern solar inverters in general. While PWM solar inverters were popular during the 90s, nowadays, MPPT 3-phase solar inverters are more popular. They can yield up to 30% more energy than PWM solar inverters can. 

Let’s understand both technologies in detail:

• PWM solar inverters: These were popular during the 90s. However, the PWM algorithm is hardly used now. PWM stands for Pulse Width Modulation. This algorithm reduces the output from solar panels to match the charging voltage safe for batteries. The end result is energy wastage and lower output. 
• MPPT solar inverters: Unlike PWM, which reduces the panel’s output, the MPPT (maximum power point tracking) algorithm finds a sweet spot at which the panels are producing maximum power. Since the sunlight conditions vary throughout the day, the MPPT algorithm works in real time to ensure panels produce maximum power possible at all times. MPPT technology can be up to 30% more efficient than PWM. 

What is the 3-Phase Inverter Price in India in 2025?

The 3-phase inverter price in India can range from ~Rs. 51,000* for an on-grid 4 kW 3-phase solar inverter to ~Rs. 1.47 lakh* for an on-grid 30 kW 3-phase solar inverter. However, these prices are just indicative and should not be treated as the final actual rate. 

*Please note: The 3-phase inverter prices shown above are illustrative for on-grid 3-phase solar inverters only and can change without notice. Final costs depend on brand, exact model, dealer channel, location, type of inverter (on-grid, off-grid, or hybrid), model availability, GST, inverter capacity, and any ongoing promotions.

What Are the Specifications of a 3-Phase Solar Inverter?

The exact technical and product specifications of a 3-phase solar inverter depend on the type of the inverter, the brand, and the capacity of the inverter. However, many high-quality 3-phase solar inverters in India come with a warranty of 12-20 years. Their efficiency can range up to 98.3%. 

Please note: All the efficiency and warranty details listed above are based on standard market research. Technical specifications, features, and warranties for 3-phase solar inverters depend on the inverter type (on-grid / hybrid / off-grid), brand, exact model, firmware, and capacity. Any figures mentioned in this article are illustrative only. Manufacturers can change specifications and policies without notice.

Technical Specification of a 3-Phase Solar PV Inverter

Here are the technical specifications of SolarEdge’s three-phase commercial inverters (specific to the model, SE10k). 

Technical Specification	Details
Rated AC Power Output	10,000
Maximum AC Power Output	10,000
AC Output Voltage – Line to Line / Line to Neutral (Nominal)	400 / 230
AC Output Voltage – Line to Line / Line to Neutral Range	320 – 478 / 180 – 276
Maximum Input Voltage	1,000
Operating Voltage Range	680 – 950
Maximum Input Current	16.5
Nighttime Power Consumption	< 2.5

Please note: All the technical specifications listed above are based on standard market research. Actual specifications, features, and warranties for 3-phase solar inverters depend on the inverter type (on-grid / hybrid / off-grid), brand, exact model, firmware, and capacity. Any figures mentioned in this article are illustrative only. Manufacturers can change specifications and policies without notice.

Product Specifications of a 3-Phase Solar Power Inverter

Here are the product specifications of SolarEdge’s three-phase commercial inverters (specific to the model, SE10k). 

Product Specification	Details
Protection Rating	IP65 – indoor and outdoor
Weight	16.4 kg
Noise	< 50 db
RoHS	Yes
Safety certifications	IEC 63027; IEC 62103 (EN50178); IEC 62109, AS3100
Supported Communication Interfaces	RS485, Ethernet, Wi-Fi (requires antenna)
Maximum Inverter Efficiency	97.6%
Reverse-Polarity Protection	Yes
Additional safety features	Utility monitoring, islanding protection, configurable power factor
Transformer-less, Ungrounded	Yes

Please note: All the product specifications listed above are based on standard market research. Actual specifications, features, and warranties for 3-phase solar inverters depend on the inverter type (on-grid / hybrid / off-grid), brand, exact model, firmware, and capacity. Any figures mentioned in this article are illustrative only. Manufacturers can change specifications and policies without notice.

What Are the Features of a 3-Phase Solar Inverter?

Most 3-phase PV inverters have multiple MPP trackers, built-in safety shut-offs, surge and arc fault protection, and integrated DC/AC isolators. 

Let’s check out all the key features that premium models by reputable brands have:

• Multiple MPPTs: They allow you to connect panels on different roof sides or angles, still generating good power from each group.
• Built-in safety shut-offs: The inverter stops exporting power during a power cut and trips safely if voltage or frequency goes out of range.
• Surge and arc-fault protection: These features guard against lightning surges and detect dangerous arcing in cables to reduce fire risk.
• Integrated DC/AC isolators: This gives the installer clear on/off switches on both the panel side and the grid side for safe servicing.
• Outdoor-ready ratings (IP65/66): Most branded 3-phase solar inverters are sealed against dust and rain. Thus, you can mount them outside without worry.
• Smart cooling design: They use heat-sinks and/or quiet fans to keep performance steady in hot weather.
• Live monitoring and app: It shows real-time production, daily history, and alerts on your phone or web portal.
• Battery-ready options: This feature on hybrid 3-phase solar inverters lets you add a battery for backup and smarter energy use.
• Quiet operation: These inverters are designed to keep noise low so they don’t disturb living or office spaces.

What Are the Benefits of a 3-Phase Solar Inverter?

The multiple benefits of 3-phase solar inverters include superb power distribution, the capacity to support large solar systems, higher performance due to embedded MPP trackers, and advanced monitoring features. 

Let’s check out all the benefits in detail: 

• They offer balanced power across all three phases: Your solar output is shared across three lines instead of one. It helps keep the voltage steadier and reduces strain on any single line.
• They support bigger system sizes: Three-phase inverters are designed for higher power. Therefore, they’re a better fit when you want more kW on your roof or for commercial rooftop systems.
• They’re smoother for motor-heavy loads: If you run pumps, compressors, or multiple ACs on a three-phase supply, spreading the power evenly across phases helps those loads run more smoothly.
• There are very few chances of voltage trips: Because export is split over three lines, the chance of hitting high voltage on a single line is lower. It clearly means fewer shutoffs.
• You get more roof layout flexibility: Many three-phase solar inverters come with multiple MPPT inputs. Hence, panels facing different directions can still perform well.
• They can scale cleanly as you grow: It’s easier to add more capacity on a three-phase service, whether you’re planning an expansion later or adding more loads at your site.
• They have good monitoring and control features: Modern 3-phase solar inverters include smart monitoring and grid-support features. These features help you track performance and meet utility settings easily.

What Are the Disadvantages of a 3-Phase Solar Power Inverter?

Higher upfront cost and installation complexity compared to single-phase solar inverters are the biggest disadvantages of 3-phase solar power inverters. If your energy requirements are not huge and you still opt for a 3-phase solar inverter, you won’t get the ROI you expect. These inverters are best-suited for commercial and industrial purposes where the energy requirement is huge. 

Let’s check out the major disadvantages of 3-phase PV inverters in detail:

• Higher upfront cost at small sizes: For small rooftop systems, the inverter and three-phase breakers can cost more than a single-phase setup.
• Installation is a bit more complex: There are more wires and protections to set up than a single-phase inverter. 
• They’re an overkill for small homes: If your energy consumption is low or your system is tiny, a three-phase inverter won’t add much benefit.
• They need more space and cooling: Three-phase solar inverters are often larger and can run fans more. Hence, they need good wall space and airflow.
• Phase balancing still matters: If your home or business loads sit mostly on one line, you’ll need an electrician to spread them out to get the best results.

What is the Cost of Installing On-Grid Rooftop Solar Systems in India?

While a solar inverter is an integral part of a solar system and it amounts to 25-30% of the entire installation cost, it’s not the only thing you’re paying for. You’re paying for the entire rooftop solar system. That estimated cost of installing a solar system in India ranges between ~Rs. 90,000 in Lucknow for a 2 kW solar system and ~Rs. 5.62 lakh in Bengaluru for a 10 kW solar system after you avail a subsidy under the PM Surya Ghar Muft Bijli Yojana. 

*Please note: The above-mentioned solar plate price is indicative as of 14th August 2025 for the SolarSquare Blue 6ft variant. The final cost of installing an on-grid rooftop solar panel system at home depends on your DISCOM charges, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. 

Let’s walk you through the solar installation price range with and without a subsidy: 

Solar System Size	Solar Plate Price in India Without Subsidy (Starting price – Indicative for base variant)*	Solar Panel Price in India With Subsidy (Starting price – Indicative for base variant)*
2 kW solar system	~Rs. 1.8 lakh in Lucknow to ~Rs. 2 lakh in Bengaluru	~Rs. 90k in Lucknow to ~Rs. 1.40 lakh in Bengaluru
3 kW solar system	~Rs. 2.10 lakh in Lucknow to ~Rs. 2.35 lakh in Bengaluru	~Rs. 1.02 lakh in Lucknow to ~Rs. 1.57 lakh in Bengaluru
4 kW solar system	~Rs. 2.55 lakh in Lucknow to ~Rs. 2.85 lakh in Bengaluru	~Rs. 1.47 lakh in Lucknow to ~Rs. 2.07 lakh in Bengaluru
5 kW solar system	~Rs. 3.10 lakh in Lucknow to ~Rs. 3.70 lakh in Bengaluru	~Rs. 2.02 lakh in Lucknow to ~Rs. 2.92 lakh in Bengaluru
10 kW solar system	~Rs. 5.80 lakh in Lucknow to ~Rs. 6.40 lakh in Bengaluru	~Rs. 4.77 lakh in Lucknow to ~Rs. 5.62 lakh in Bengaluru

*Please note: The above-mentioned solar plate price is indicative as of 14th August 2025 for the SolarSquare Blue 6ft variant. The final cost of installing an on-grid rooftop solar panel system at home depends on your DISCOM charges, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. 

Installation Cost vs Solar Savings in 25 Years

While upfront installation cost might look a tad high initially, once you compare it with the savings you’ll have in 25 years because you won’t have to pay electricity bills (and that tariffs rise in India annually by 3-6%), you’ll realize that going solar will save you tens of lakhs of rupees.

Here, we’ve tabulated how much money goes into installing an on-grid rooftop solar system in a city like Nagpur and the money that system saves in 25 years.

Solar System Size	Solar Panel Price in Nagpur With Subsidy (Starting Price – Indicative for Base Variant)*	Solar Savings in Nagpur in 25 Years*
2 kWp	~ Rs. 1.15 lakh	~ Rs. 11.05 lakh
3 kWp	~ Rs. 1.32 lakh	~ Rs. 16.58 lakh
4 kWp	~ Rs. 1.77 lakh	~ Rs. 22.11 lakh
5 kWp	~ Rs. 2.27 lakh	~ Rs. 34.43 lakh
10 kWp	~ Rs. 5.02 lakh	~ Rs. 68.86 lakh

*Please note: The above-mentioned solar plate price is indicative as of 14th August 2025 for the SolarSquare Blue 6ft variant. The final cost of installing an on-grid rooftop solar panel system at home depends on your DISCOM charges, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. Additionally, while calculating savings, we have considered the annual tariff escalation at 3% and the annual degradation at 1%. The actual final savings from solar panel installation depend on the types of solar panels you’ve installed and their efficiency, intensity of sunlight your rooftop receives, orientation of the panels and tilt angle, the pollution level and weather conditions in your city, the temperature, shadow on the roof, impact of dirt/dust, and how well you maintain your panels after installation.

Not from Nagpur, but need an estimate of savings from solar in your city? Fret not – use SolarSquare’s free rooftop solar calculator to get an idea about the estimated savings you can make by installing an on-grid rooftop solar system in your city.

Conclusion

3-phase solar inverters are essential for commercial and industrial renewable energy installations with high power requirements. They offer superior power handling, grid stability, and system efficiency compared to single-phase alternatives as they divide a single DC output into 3 AC waveforms.  

If you’re looking forward to installing solar at home and are unsure whether you need a single-phase or 3-phase solar inverter and whether investing in on-grid solar is worth it, book a free solar consultation with SolarSquare now. Let our experts resolve all your doubts free of charge. 

You can also download our free solar handbook, which addresses the top questions homeowners have when going solar.

FAQs

Q1. What is the best 3-phase solar inverter?

Ans. The best 3-phase solar power inverters are those that have multiple MPP trackers and surge and arc protection features. Additionally, look for IP safety ratings that guarantee that the solar inverter is suitable for outdoor use.

Q2. Is 3-phase power better for solar?

Ans. On 3-phase properties and larger solar energy systems, yes. It spreads export across three phases, reduces voltage rise, and handles bigger loads. However, if you only have a single-phase and a small solar panel system, single-phase inverters are better.

Q3. Are three-phase inverters more expensive?

Ans. Yes. 3-phase solar inverters cost more than single-phase solar inverters. However, the cost per kW can even out or improve on larger systems.

Q4. Can I run a 3-phase inverter on single-phase?

Ans. No. 3-phase on-grid solar inverters are meant for 3-phase services only.