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Growatt 18000-20000UE

MPPT efficiency up to 99.5%,Max. DC voltage 1000V


Growatt 18000-20000UE is ideal solution for residential or small commercial systems.

Technical Parameter

Input data(DC)

Growatt 18000UE Growatt 20000UE
Max. DC input power 19800W 22000W
Max. DC input voltage 1000V 1000V
Start Voltage 350V 350V
PV Voltage range 180V - 1000V 180V - 1000V
MPP work voltage range/nominal voltage 300V - 1000V / 600V 300V - 1000V / 600V
Full load DC voltage range 400V - 800V 400V - 800V
Max. input current 23A 26A
Max. input current per string 23A 26A
Number of independent MPP trackers/strings per MPP tracker 2/3 2/3


Growatt 18000UE Growatt 20000UE
Rated AC output power 18kW 20kW
Max AC output power 18kVA 20kVA
Max. output current 28.6A 32A
AC nominal voltage range 230V/400V 184 - 275V 230V/400V 184 - 275V
AC grid frequency range 50-60Hz; 44-55Hz/54-65Hz 50-60Hz; 44-55Hz/54-65Hz
Power factor 1 1
THDI <3% <3%
AC grid connection type 3/N/PE, 3W+PE(Opt) 3/N/PE, 3W+PE(Opt)


Growatt 18000UE Growatt 20000UE
Max. efficiency 98% 98%
Euro – eta 97.5% 97.5%
MPPT efficiency 99.5% 99.5%

Protection Devices

Growatt 18000UE Growatt 20000UE
DC reverse polarity protection yes yes
DC switch yes yes
Output over current protection yes yes
Output overvoltage Protection – Varistor yes yes
Ground fault monitoring yes yes
Grid monitoring yes yes
Integrated all-pole sensitive leakage current monitoring unit yes yes
DC surge protection
Output short circuit protection
AC surge protection
String fuse protection
String fault monitoring 
Anti-PID protection
AFCI protection
DC disconnection device
AC disconnection device
Grid monitoring/management
Over temperature protection
Insulation monitoring 

General Data

Growatt 18000UE Growatt 20000UE
Dimensions(W/H/D) 570/740/235 mm 570/740/235 mm
Weight 60kg 60kg
Operating temperature range -25 °C ... +60 °C -25 °C ... +60 °C
Noise emission (typical) ≤ 55 dB(A) ≤ 55 dB(A)
Altitude without derating 2000m without derating
Self-consumption night, <0.5W <0.5W
Topology Transformerless Transformerless
Cooling concept Smart cooling Smart cooling
Environmental Protection Rating IP65 IP65
Relative humidity 0~100% 0~100%


Growatt 18000UE Growatt 20000UE
DC connection H4/MC4(opt) H4/MC4(opt)
AC connection Screw terminal Screw terminal
Display LCD LCD
Interfaces: RS232/RF/Wi-Fi/LAN/GPRS RS232/R485/ LAN/RF/WiFi/GPRS RS232/R485/ LAN/RF/WiFi/GPRS
Warranty:5/10 years yes / opt yes / opt

Certificates and Approvals

VDE-AR-N4105, CEI 0-21, CEI 0-16, CE, VDE 0126-1-1, IEC 62109, RD 1663, G59, C-tick, AS4777, AS/NZS 3100, IEC61727, IEC6


File name File size File type Download
CE Declaration of Conformity (Growatt 18000UE,Growatt 20000UE) 0.15 M .pdf Download
Growatt 18000-20000UE EN50438 for Norway&Poland 0.16 M .pdf Download
Growatt 18000-20000UE CE LVD 0.29 M .pdf Download
Growatt 18000-20000UE CE EMC 0.32 M .pdf Download
Growatt 18000-20000UE Technical Specification 0.29 M .pdf Download