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ET Solar Group ET-M660250WW (250W)

Residential · 250W
57
SCORE /100
30 specs
Score this as…
⭐ General / Balanced📐 Max Efficiency (Tight Roof)🛡️ Durability & Warranty🌡️ Hot-Climate Buyer⚡ High-Output / Commercial-Scale🪶 Easy-Install / Older Roof

Score Breakdown

Certifications 70
Temperature & Climate Resilience 52
Build & Install 50
Efficiency & Real-World Performance 49
Power Output 49
Warranty & Durability 38

DC Electrical Characteristics

STC Power Rating
250W
PTC Power Rating
225.2W
STC Power per unit of area
14.3W/ft (153.7W/m)
Peak Efficiency
0.1537
Power Tolerances
-1%/+3%
Number of Cells
60
Imp
8.22A
Vmp
30.43V
Isc
8.69A
Voc
37.7V
NOCT
45.3°C
Temp. Coefficient of Power
-0.43%/K
Temp. Coefficient of Voltage
-0.132V/K
Series Fuse Rating
20A
Maximum System Voltage
1000V

Mechanical Characteristics

Type
Monocrystalline Silicon
Output Terminal Type
Multicontact Connector Type 4
Frame Color
Clear
Backsheet Color
data not available
Length
64.6in (1,640mm)
Width
39.1in (992mm)
Depth
1.6in (40mm)
Weight
42.6lb (19.3kg)
Installation Method
Rack-Mounted

Warranty and Certifications

80% Power Output Warranty Period
25yrs
90% Power Output Warranty Period
10yrs
Workmanship Warranty Period
5yrs
UL Fire Classification
data not available
Compliances
UL 1703
CSI Listed
Yes