Skip to main content
SUN-18K-G02 vs Symo Advanced 17.5-3-M 8 of 22 identical Swap Change inverters

Deye SUN-18K-G02 vs Fronius International Symo Advanced 17.5-3-M

Deye
SUN-18K-G02
18 kW 97.8 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Fronius International Symo Advanced 17.5-3-M
Fronius International
Symo Advanced 17.5-3-M
17.5 kW 97.6 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SUN-18K-G02 leads on the differences that matter

The largest is rated ac power: 0.50 kW apart. 8 of 22 comparable parameters are identical, with 10 more left out because at least one datasheet does not publish them.

See all 14 differences
How alike are they
8 of 22 comparable
parameters are identical
identical differs not published
01

What actually differs

14 of 22 parameters
Parameter SUN-18K-G02 Symo Advanced 17.5-3-M Difference
Rated AC power 18.00 kW 17.50 kW 0.50 kW apart
Max efficiency 98.6 % 97.9 % 0.7 pp more efficient
Max AC power 19.80 kW 17.50 kW 2.30 kW apart
Max PV power 21.60 kW 26.30 kW 4.70 kW apart
DC/AC ratio 1.20 1.50 0.30 more oversizing headroom
Weight 28.0 kg 42.0 kg 14.0 kg lighter
Weight per kW 1.6 kg/kW 2.4 kg/kW 0.8 kg/kW lighter
European efficiency 97.8 % 97.6 % 0.2 pp more efficient
Max AC current 28.7 A 26.5 A 2.2 A apart
Start voltage 250 V 200 V 50 V earlier start
Max operating temperature 65 °C 60 °C 5 °C more heat tolerant
Ingress protection IP65 IP66 IP65 vs IP66
MPPT voltage range 200-850 V 200-800 V 200-850 V vs 200-800 V
Dimensions 520x400x240 mm 725x510x225 mm 520x400x240 mm vs 725x510x225 mm
02

Full specification

Parameter SUN-18K-G02 Symo Advanced 17.5-3-M Difference
AC output
Rated AC power 18.00 kW 17.50 kW 0.50 kW apart
Max AC power 19.80 kW 17.50 kW 2.30 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 28.7 A 26.5 A 2.2 A apart
PV input
Max PV power 21.60 kW 26.30 kW 4.70 kW apart
DC/AC ratio 1.20 1.50 +0.30 for Symo Advanced 17.5-3-M
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 200-850 V 200-800 V 200-850 V vs 200-800 V
Start voltage 250 V 200 V -50 V for Symo Advanced 17.5-3-M
MPP trackers 2 2 Same
Strings per tracker - 3 Not published by Deye
Max input current per tracker - - Neither datasheet publishes this
Efficiency
European efficiency 97.8 % 97.6 % +0.2 pp for SUN-18K-G02
Max efficiency 98.6 % 97.9 % +0.7 pp for SUN-18K-G02
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 28.0 kg 42.0 kg -14.0 kg for SUN-18K-G02
Weight per kW 1.6 kg/kW 2.4 kg/kW -0.8 kg/kW for SUN-18K-G02
Dimensions 520x400x240 mm 725x510x225 mm 520x400x240 mm vs 725x510x225 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling forced-air forced-air Same
Noise 45 dB - Not published by Fronius International
Max operating temperature 65 °C 60 °C +5 °C for SUN-18K-G02
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection - Yes Not published by Deye
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

More useful comparisons

Open all inverters
Same type, similar size
Fronius International
Deye SUN-18K-G02 vs Fronius Verto 17.5
15 differences, the largest is rated ac power
Same type, similar size
Fronius International
Deye SUN-18K-G02 vs Fronius Symo 17.5-3 480
10 differences, the largest is rated ac power
Same type, similar size
SolarEdge
Deye SUN-18K-G02 vs SolarEdge SE17.3KUS
14 differences, the largest is rated ac power
Same type, similar size
Growatt
Fronius International Symo Advanced 17.5-3-M vs Growatt MID 17KTL3-X
13 differences, the largest is rated ac power
04

Written summary

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