Skip to main content
Fronius Primo 15.0-1 vs SG15KTL-M 6 of 18 identical Swap Change inverters

Fronius Primo 15.0-1 vs Sungrow SG15KTL-M

Fronius Primo 15.0-1
Fronius International
Fronius Primo 15.0-1
15 kW Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow
SG15KTL-M
15 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG15KTL-M leads on the differences that matter

The largest is max dc voltage: 100 V apart. 6 of 18 comparable parameters are identical, with 14 more left out because at least one datasheet does not publish them.

See all 12 differences
How alike are they
6 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

12 of 18 parameters
Parameter Fronius Primo 15.0-1 SG15KTL-M Difference
Max DC voltage 1000 V 1100 V 100 V apart
Max input current per tracker 33.0 A 22.0 A 11.0 A more headroom
Max efficiency 96.7 % 98.6 % 1.9 pp more efficient
Weight 37.4 kg 24.0 kg 13.4 kg lighter
Weight per kW 2.5 kg/kW 1.6 kg/kW 0.9 kg/kW lighter
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 240 V 400 V 160 V apart
Max AC current 62.5 A 24.0 A 38.5 A apart
Start voltage 80 V 250 V 170 V earlier start
Ingress protection NEMA 4X IP65 NEMA 4X vs IP65
MPPT voltage range 200-800 V 200-1000 V 200-800 V vs 200-1000 V
Dimensions 724x511x226 mm 485x370x210 mm 724x511x226 mm vs 485x370x210 mm
02

Full specification

Parameter Fronius Primo 15.0-1 SG15KTL-M Difference
AC output
Rated AC power 15.00 kW 15.00 kW Same
Max AC power 15.00 kW 15.00 kW Same
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 240 V 400 V 160 V apart
Max AC current 62.5 A 24.0 A 38.5 A apart
PV input
Max PV power - - Neither datasheet publishes this
DC/AC ratio - - Neither datasheet publishes this
Max DC voltage 1000 V 1100 V 100 V apart
MPPT voltage range 200-800 V 200-1000 V 200-800 V vs 200-1000 V
Start voltage 80 V 250 V -170 V for Fronius Primo 15.0-1
MPP trackers 2 2 Same
Strings per tracker - 2 Not published by Fronius International
Max input current per tracker 33.0 A 22.0 A +11.0 A for Fronius Primo 15.0-1
Efficiency
European efficiency - 98.3 % Not published by Fronius International
Max efficiency 96.7 % 98.6 % +1.9 pp for SG15KTL-M
CEC efficiency 97.0 % - Not published by Sungrow
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 37.4 kg 24.0 kg -13.4 kg for SG15KTL-M
Weight per kW 2.5 kg/kW 1.6 kg/kW -0.9 kg/kW for SG15KTL-M
Dimensions 724x511x226 mm 485x370x210 mm 724x511x226 mm vs 485x370x210 mm
Ingress protection NEMA 4X IP65 NEMA 4X vs IP65
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 - Not published by Sungrow
Ethernet Yes - Not published by Sungrow
Arc fault protection Yes - Not published by Sungrow
Integrated DC switch Yes Yes Same
Warranty
Warranty 10 yrs - Not published by Sungrow
03

More useful comparisons

Open all inverters
Same type, similar size
Growatt
Fronius Primo 15.0-1 vs Growatt MID 15KTL3-X
13 differences, the largest is warranty
Same type, similar size
Huawei
Fronius Primo 15.0-1 vs Huawei SUN2000-15KTL-M2
14 differences, the largest is max dc voltage
Same type, similar size
Huawei
Fronius Primo 15.0-1 vs Huawei SUN2000-15KTL-M0
14 differences, the largest is max dc voltage
Same type, similar size
Growatt
Sungrow SG15KTL-M vs Growatt MOD 15KTL3-X
9 differences, the largest is max input current per tracker
04

Written summary

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