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SolarEdge SE66.6K (Synergy, 277/480V) vs MAC 66KTL3-X MV 5 of 15 identical Swap Change inverters

SolarEdge SE66.6K (Synergy, 277/480V) vs Growatt MAC 66KTL3-X MV

SolarEdge SE66.6K (Synergy, 277/480V)
SolarEdge
SolarEdge SE66.6K (Synergy, 277/480V)
66.6 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Growatt MAC 66KTL3-X MV
Growatt
MAC 66KTL3-X MV
66 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

10 differences, and they point both ways

The largest is rated ac power: 0.60 kW apart. 5 of 15 comparable parameters are identical, with 17 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
5 of 15 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 15 parameters
Parameter SolarEdge SE66.6K (Synergy, 277/480V) MAC 66KTL3-X MV Difference
Rated AC power 66.60 kW 66.00 kW 0.60 kW apart
Max DC voltage 1000 V 1100 V 100 V apart
Max input current per tracker 40.0 A 13.0 A 27.0 A more headroom
Max efficiency 98.1 % 98.8 % 0.7 pp more efficient
Max AC power 66.60 kW 73.30 kW 6.70 kW apart
Max PV power 90.00 kW 85.80 kW 4.20 kW apart
Max AC current 80.0 A 88.2 A 8.2 A apart
DC/AC ratio 1.35 1.30 0.05 more oversizing headroom
MPPT voltage range 680-1000 V 200-1000 V 680-1000 V vs 200-1000 V
Dimensions 940x315x260 mm 508x680x281 mm 940x315x260 mm vs 508x680x281 mm
02

Full specification

Parameter SolarEdge SE66.6K (Synergy, 277/480V) MAC 66KTL3-X MV Difference
AC output
Rated AC power 66.60 kW 66.00 kW 0.60 kW apart
Max AC power 66.60 kW 73.30 kW 6.70 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 480 V - Not published by Growatt
Max AC current 80.0 A 88.2 A 8.2 A apart
PV input
Max PV power 90.00 kW 85.80 kW 4.20 kW apart
DC/AC ratio 1.35 1.30 +0.05 for SolarEdge SE66.6K (Synergy, 277/480V)
Max DC voltage 1000 V 1100 V 100 V apart
MPPT voltage range 680-1000 V 200-1000 V 680-1000 V vs 200-1000 V
Start voltage - 250 V Not published by SolarEdge
MPP trackers - 3 Not published by SolarEdge
Strings per tracker - 4 Not published by SolarEdge
Max input current per tracker 40.0 A 13.0 A +27.0 A for SolarEdge SE66.6K (Synergy, 277/480V)
Efficiency
European efficiency 98.0 % - Not published by Growatt
Max efficiency 98.1 % 98.8 % +0.7 pp for MAC 66KTL3-X MV
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input - - Neither datasheet publishes this
Battery voltage - - Neither datasheet publishes this
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight - 52.0 kg Not published by SolarEdge
Weight per kW - 0.8 kg/kW Not published by SolarEdge
Dimensions 940x315x260 mm 508x680x281 mm 940x315x260 mm vs 508x680x281 mm
Ingress protection IP65 IP65 Same
Cooling forced-air forced-air Same
Noise 60 dB - Not published by Growatt
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - Yes Not published by SolarEdge
Ethernet Yes - Not published by Growatt
Arc fault protection Yes - Not published by Growatt
Integrated DC switch Yes Yes Same
Warranty
Warranty - 5 yrs Not published by SolarEdge
03

More useful comparisons

Open all inverters
Same type, similar size
SolarEdge
SolarEdge SE66.6K (Synergy, 277/480V) vs SolarEdge SE66.6K (K66.6SE)
One difference: dimensions
Same type, similar size
SolarEdge
SolarEdge SE66.6K (Synergy, 277/480V) vs SolarEdge SE66.6K (K66.6SE) - Primary unit
The same specification on paper
Same type, similar size
SolarEdge
SolarEdge SE66.6K (Synergy, 277/480V) vs SolarEdge SE66.6K (K66.6SE) - Secondary unit
One difference: dimensions
04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.