On-Grid
Growatt undefined MAC 66KTL3-X MV

Growatt • MAC 50-70KTL3-X LV/MV

MAC 66KTL3-X MV

Region:China
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.
66kW
Nominal AC Power
98.8%
Max Efficiency
680 x 508
Dimensions (mm)
Size Your System Find Installer

Ideal Use Case

The Growatt MAC 66KTL3-X MV is tailored for specific solar energy needs. This inverter is an excellent choice if you:

Manage a large 66.0 kW commercial or industrial solar array
Use three-phase grid connection
Need 3 independent MPPT trackers for different roof orientations
Want maximum energy harvest (98.8% 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 Power66 kW
Max Efficiency98.8 %
Euro Efficiency0 %
Max AC Current88.2 A
Rated AC Current0 A
Number of Feed-in Phases3
THD (Total Harmonic Distortion)3 %

DC Input Data

MPP Voltage Range200~1000 V
Max DC Voltage1100 V
Rated DC Voltage600 V
Min DC Voltage to Start250 V
Max DC Current39 A
Number of MPP Trackers3
DC Inputs12
ConnectorsMC4

Mechanical & Environmental Data

Dimensions (W x H x D)680 x 508 x 281 mm
Weight52.0 kg
Protection ClassIP66
Cooling MethodFan
DisplayLED
InterfaceRS 485, USB, WLAN

Operating Conditions

Operating Temperature-25 ~ +60 ℃
Humidity0-100 %
Frequency45-65 Hz
Max Altitude4000 m
Transformer TypeTransformerless
Power Consumption (Night)1 W

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Product FAQ

What size solar array can the Growatt MAC 66KTL3-X MV handle?

The Growatt MAC 66KTL3-X MV has a nominal AC output of 66kW with a maximum efficiency of 98.8%. It is typically paired with a solar array of 79–86kW DC for optimal energy harvest.

Is the Growatt MAC 66KTL3-X MV a hybrid inverter?

The Growatt MAC 66KTL3-X MV 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 Growatt MAC 66KTL3-X MV have WiFi monitoring?

Most Growatt 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 Growatt MAC 66KTL3-X MV have?

This inverter features 3 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 Growatt MAC 66KTL3-X MV 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.