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Sofar Solar SOFAR 3300TL-G3
Sofar Solar

SOFAR 3300TL-G3

3.3 kW Grid-tie Single-phase
Compare with closest alternative Datasheet PDF
Rated AC (kW)
3.30
Weak · bottom 1%
Euro eff. (%)
-
Not published
MPPT
1
Weak · bottom 7%
Max DC (V)
550
Typical · median 600 V
Weight (kg)
-
Not published
Warranty (yrs)
-
Not published

The Sofar Solar SOFAR 1100-3300TL-G3 series are single-phase grid-tie inverters designed for small consumer installations, where reliable operation, easy configuration, and quiet installation in homes or garages are key. The use of 1 MPPT is particularly effective in systems with a single, uniformly oriented string - it simplifies the design, reduces the risk of errors, and speeds up commissioning. At the same time, the high European efficiency means significantly better yields in typical weather conditions in Poland, not just in laboratory settings.

These inverters feature extensive safety protections and a sealed housing that facilitates installation in challenging conditions. Monitoring is convenient: WiFi standard (plus RS485) allows you to track production online or via an app, and Ethernet is available as an option. This is not a hybrid series - it does not work with energy storage systems. A notable advantage is also the complete set of grid certifications and the 12-year warranty, which can be extended.

Ranking

362 inverters from 3 to 6 kW
Metric This inverter Median Position in class Rank in class
European efficiency - 97.2% Not published -
MPPT trackers 1 2 Weak · bottom 7% 222
Max DC input voltage 550 V 600 V Typical 197
Weight per kW - 3.3 Not published -
Warranty - 5 yrs Not published -
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

1 from shops we track
Shop Country Price Per kW Stock Offer updated
Sklep Soltech Poland 1 248.80 zł net 378.42 zł/kW Not stated 19h ago Visit shop

Specifications

Open datasheet PDF
Rated AC power 3.3 kW Continuous output
Max apparent power 3.30 kVA
Phases Single-phase
Nominal AC voltage 230 V 180Vac–276Vac
Max AC current 16.0 A
Grid frequency 50 Hz Range 45–55Hz / 55–65Hz
Power factor 1 (adjustable +/-0.8)
Harmonic distortion (THD) 3.0 %
Max DC voltage 550 V Caps the string length
MPPT voltage range 50 to 500 V
Start-up voltage 70 V
MPPT trackers 1 1 string each
Max input current per MPPT 12.0 A Must exceed the panel's Imp
Max short-circuit current per MPPT 15.0 A Must exceed the panel's Isc
Enclosure IP65
Cooling natural
Operating temperature -30 to 60 °C
Max humidity 100 %
Max altitude 2000 m
Interfaces Wi-FiEthernetDisplay
Protocols RS485Wi-Fi (optional)Ethernet (optional)
Protection DC switchSurge protection
Certifications IEC/EN 61000-6-1/3IEC/EN 61000-3-2/3IEC 62116IEC 61727IEC 61683IEC 60068-1/2/14/30IEC/EN 62109-1/2VDE-AR-N 4105VDE V 0126-1-1V 0124-100C10/11G98EN 50549-1

Pros and cons

5 positive · 2 caution
What owners get
97.2% European Efficiency Rating

The declared European efficiency of 97.2% (peak 97.7%) places this series among the top-ranked single-phase inverters in the sub-3.3 kW class. In Poland's climate - characterized by a high proportion of partial-irradiance hours - this translates into measurably higher annual energy yields compared to inverters rated solely on peak efficiency under laboratory conditions.

12-Year Standard Warranty

The standard warranty is 12 years (confirmed by Polish distributors, including AiD Solar), while most competitors in this price segment offer only 10 years. An extension option is available, reducing financial risk over the full system lifecycle.

Built-in WiFi at No Extra Cost + RS485

A WiFi module is factory-integrated at no additional charge, enabling monitoring via an online platform and mobile app from day one. The RS485 interface allows simultaneous integration with building management systems (BMS) and home automation solutions.

Wide MPPT Input Range 50-550 V with 140% DC Overload

The 50-550 V MPPT input voltage range simplifies string sizing, while support for 140% DC overload allows PV array oversizing without voiding the warranty - a significant advantage when optimizing overall system BoS costs.

Competitive Unit Price

The 3300TL-G3 is available through Polish wholesale distributors at approximately 1,640 PLN (VAT incl.), equating to ~497 PLN/kW of installed capacity - well below premium European brands (Fronius, SMA) in this segment, while retaining full grid-connection certifications and an IP65 rating.

Trade-offs
Single MPPT Only - Limited Orientation Flexibility

A single MPPT channel prevents independent maximum power point tracking for strings on different roof facets (e.g., east-west configurations). Any installation involving partial shading or mixed array orientation will require either a dual-MPPT inverter or the addition of power optimizers - both of which increase overall system cost.

No Battery Storage Support

This is a pure grid-tie series with no battery compatibility. Given the growing interest in energy storage in Poland - including subsidy programs running through 2026 - adding battery storage at a later stage requires replacing the inverter with a hybrid unit, increasing the total system cost.

Inverter Power Euro eff. MPPT Weight Difference
Sofar Solar SOFAR 3300TL-G3 3.3 kW - 1 - You are here
SOFAR 3.3KTL2-G3 3.3 kW 97.2% 1 7.3 kg Similar on paper
MIC 3300TL-X 3.3 kW 97.1% 1 6.2 kg Similar on paper
MIC 3300TL-X2 (Pro) 3.3 kW 97.1% 1 6.2 kg Similar on paper
MIC 3300TL-X2 3.3 kW 97.1% 1 6.2 kg Similar on paper
SolarEdge SE3500H (HD‑Wave, single phase) 3.5 kW 98.8% - 7.8 kg +0.2 kW
Fronius Primo 3.5-1 3.5 kW 96.8% 2 21.5 kg +0.2 kW, +1 MPPT
SolarEdge SE3000H (HD‑Wave, single phase) 3 kW 98.3% - 7.8 kg -0.3 kW
Solis-3P3K-4G 3 kW 97.8% 2 17.3 kg -0.3 kW, +1 MPPT

About the SOFAR 1100-3300TL-G3 series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this model's own.

How many MPPT inputs does the SOFAR 1100-3300TL-G3 inverter have, and is that sufficient for my system?
The SOFAR 1100-3300TL-G3 series features a single MPPT input. This is perfectly adequate when all panels are mounted on a single roof face sharing the same azimuth and tilt angle. A single MPPT simplifies the electrical design, reduces commissioning time, and minimizes wiring errors. If your panels span multiple roof faces with different orientations or your roof is subject to significant shading, you should consider an inverter with two MPPT inputs.
What is the warranty on the SOFAR 1100-3300TL-G3 inverter?
The standard manufacturer's warranty for the SOFAR 1100-3300TL-G3 series is 12 years. Sofar Solar offers warranty extension options, which is an important consideration when planning a system with a 20-25 year service life. It is advisable to check the extension terms and the scope of warranty service available in your region directly with your local distributor, as details may vary depending on the importer.
What is the efficiency of the SOFAR 3300TL-G3 inverter, and does it translate into real-world energy savings?
The peak efficiency of the SOFAR 1100-3300TL-G3 series is 97.7%. In practice, however, the weighted European efficiency (EU efficiency) is the more meaningful metric, as it accounts for the varying load levels typical of Central European weather conditions. A high EU efficiency means lower losses at reduced irradiance levels, which directly translates into better annual energy yields in climates where overcast skies and variable cloud cover are the norm.
Can the SOFAR 1100-3300TL-G3 inverter be installed outdoors, for example on a garage wall?
Yes, the SOFAR 1100-3300TL-G3 series carries an IP65 enclosure rating, providing complete protection against dust ingress and water jets. The inverter can be mounted outdoors-on a garage or outbuilding wall-without any additional protective enclosure. The operating temperature range spans from -30 °C to +60 °C, making it suitable for both harsh winter conditions and summer heat.
How does monitoring work on the SOFAR 1100-3300TL-G3, and is Wi-Fi included as standard?
Yes, a Wi-Fi module is factory-integrated into every unit of the SOFAR 1100-3300TL-G3 series. Once configured, the inverter connects to the SolarmanPV cloud platform or the Sofar Solar mobile app, where users can monitor real-time power output, historical yield data, and any active alarms. An RS485 port is also available for integration with third-party systems, and Ethernet connectivity is optionally available on select models.
Is the SOFAR 1100-3300TL-G3 inverter compatible with battery energy storage?
No, the SOFAR 1100-3300TL-G3 series is a grid-tie inverter only and does not support battery energy storage. Power generated by the PV array is fed directly to the grid or consumed by on-site loads, but cannot be stored in batteries. If you plan to add energy storage to your system, you should select a hybrid inverter from Sofar Solar's lineup, such as the HYD series or the ME3000SP.
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