On-Grid
Sungrow undefined SG12RT

Sungrow • Sungrow SG5/6/7/8/10/12RT

SG12RT

Region:Spain, Bulgaria, Poland, Italy, Czech Republic, Germany
Region shows where the seller or factory is located. Most ship globally, and all listed suppliers should be able to ship to your current location.
18kW
Nominal AC Power
98.5%
Max Efficiency
370 x 480
Dimensions (mm)
Size Your System Find Installer

Ideal Use Case

The Sungrow SG12RT is tailored for specific solar energy needs. This inverter is an excellent choice if you:

Operate a 18.0 kW commercial solar installation
Use three-phase grid connection
Need 2 independent MPPT trackers for different roof orientations
Want maximum energy harvest (98.5% peak efficiency)
Focus on grid-tied operation without battery storage
Operate in extremely cold climates

Don’t guess your solar setup — calculate it first!

Take our Solar Quiz to get a personalized recommendation for panels, inverter, battery capacity, and system size — before you spend money on the wrong setup.

Run Technical Sizing

AC Output Data

Nominal AC Power18 kW
Max Efficiency98.5 %
Euro Efficiency97.9 %
Max AC Current20 A
Rated AC Current17.5 A
Number of Feed-in Phases3
THD (Total Harmonic Distortion)3 %

DC Input Data

MPP Voltage Range160~1000 V
Max DC Voltage1100 V
Min DC Voltage to Start180 V
Max DC Current37.5 A
Number of MPP Trackers2
DC Inputs3
ConnectorsMC4

Mechanical & Environmental Data

Dimensions (W x H x D)370 x 480 x 195 mm
Weight18.0 kg
Protection ClassIP65
Cooling MethodNatural
DisplayLED
InterfaceRS 485, Ethernet, WLAN

Operating Conditions

Operating Temperature-25 ~ +60 ℃
Humidity0-100 %
Frequency45-65 Hz
Max Altitude4000 m
Transformer TypeTransformerless
Power Consumption (Night)6 W

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Product FAQ

What size solar array can the Sungrow SG12RT handle?

The Sungrow SG12RT has a nominal AC output of 18kW with a maximum efficiency of 98.5%. It is typically paired with a solar array of 22–23kW DC for optimal energy harvest.

Is the Sungrow SG12RT a hybrid inverter?

The Sungrow SG12RT is a on-grid inverter. To add battery storage, you would need a separate AC-coupled battery inverter or upgrade to a hybrid model.

Does the Sungrow SG12RT have WiFi monitoring?

Most Sungrow inverters come with or support optional WiFi/Ethernet dongles. This allows you to track your solar production and battery status via a mobile app or web portal in real-time.

How many MPPT trackers does the Sungrow SG12RT have?

This inverter features 2 independent MPPT trackers with a maximum DC input voltage of 1100V. Multiple trackers allow panels on different roof faces or orientations to operate independently for maximum yield.

Is the Sungrow SG12RT a three-phase inverter?

Yes, this is a three-phase inverter. Three-phase inverters are ideal for larger homes, commercial systems, or regions with three-phase grid connections.