Skip to main content
MID 15KTL3-X vs Fronius Primo 15.0-1 7 of 20 identical Swap Change inverters

Growatt MID 15KTL3-X vs Fronius Primo 15.0-1

Growatt MID 15KTL3-X
Growatt
MID 15KTL3-X
15 kW 98.6 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Fronius Primo 15.0-1
Fronius International
Fronius Primo 15.0-1
15 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

13 differences, and they point both ways

The largest is warranty: 5 yrs longer. 7 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 13 differences
How alike are they
7 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

13 of 20 parameters
Parameter MID 15KTL3-X Fronius Primo 15.0-1 Difference
Warranty 5 yrs 10 yrs 5 yrs longer
Max DC voltage 1100 V 1000 V 100 V apart
Max efficiency 98.8 % 96.7 % 2.0 pp more efficient
Max AC power 16.60 kW 15.00 kW 1.60 kW apart
Weight 23.0 kg 37.4 kg 14.4 kg lighter
Weight per kW 1.5 kg/kW 2.5 kg/kW 1.0 kg/kW lighter
Grid connection 3-phase Single-phase 3-phase vs Single-phase
Nominal AC voltage 400 V 240 V 160 V apart
Max AC current 24.2 A 62.5 A 38.3 A apart
Start voltage 250 V 80 V 170 V earlier start
Ingress protection IP65 NEMA 4X IP65 vs NEMA 4X
MPPT voltage range 200-1000 V 200-800 V 200-1000 V vs 200-800 V
Dimensions 395x525x222 mm 724x511x226 mm 395x525x222 mm vs 724x511x226 mm
02

Full specification

Parameter MID 15KTL3-X Fronius Primo 15.0-1 Difference
AC output
Rated AC power 15.00 kW 15.00 kW Same
Max AC power 16.60 kW 15.00 kW 1.60 kW apart
Grid connection 3-phase Single-phase 3-phase vs Single-phase
Nominal AC voltage 400 V 240 V 160 V apart
Max AC current 24.2 A 62.5 A 38.3 A apart
PV input
Max PV power 22.50 kW - Not published by Fronius International
DC/AC ratio 1.50 - Not published by Fronius International
Max DC voltage 1100 V 1000 V 100 V apart
MPPT voltage range 200-1000 V 200-800 V 200-1000 V vs 200-800 V
Start voltage 250 V 80 V -170 V for Fronius Primo 15.0-1
MPP trackers 2 2 Same
Strings per tracker - - Neither datasheet publishes this
Max input current per tracker - 33.0 A Not published by Growatt
Efficiency
European efficiency 98.6 % - Not published by Fronius International
Max efficiency 98.8 % 96.7 % +2.0 pp for MID 15KTL3-X
CEC efficiency - 97.0 % Not published by Growatt
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 23.0 kg 37.4 kg -14.4 kg for MID 15KTL3-X
Weight per kW 1.5 kg/kW 2.5 kg/kW -1.0 kg/kW for MID 15KTL3-X
Dimensions 395x525x222 mm 724x511x226 mm 395x525x222 mm vs 724x511x226 mm
Ingress protection IP65 NEMA 4X IP65 vs NEMA 4X
Cooling forced-air forced-air Same
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection - Yes Not published by Growatt
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs 10 yrs +5 yrs for Fronius Primo 15.0-1
03

More useful comparisons

Open all inverters
Same type, similar size
Sungrow
Growatt MID 15KTL3-X vs Sungrow SG15KTL-M
4 differences, the largest is max ac power
Same type, similar size
Huawei
Growatt MID 15KTL3-X vs Huawei SUN2000-15KTL-M2
9 differences, the largest is weight
Same type, similar size
Huawei
Growatt MID 15KTL3-X vs Huawei SUN2000-15KTL-M0
9 differences, the largest is weight
04

Written summary

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