Compare ET Solar Group ET-M648WW/WB 220 vs Ameresco 120J 120W

Warranty Terms

Output Warranty:

25 Years of 81.4% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 220 Wp

Efficiency: 16.75 %

Voltage at Maximum Power VMPP: 25.21 V

Current at Maximum Power IMPP: 8.73 A

Open Circuit Voltage VOC: 31.26 V

Short Circuit Current ISC: 9.14 A

Power Tolerance Positive: + 2 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.42 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.05 %/°C

Solar Panel Attributes

Weight: 15 kg

Cell Type: Monocrystalline

Cell Count: 48

Glass Thickness: unknown

Juntion Box Protection Class: IP 67

Cable Length: unknown

Glass Type: unknown

Warranty Terms

Output Warranty:

12 Years of 90% Output Power

Materials Warranty: 2 Years

Panel Performance

Rated Power: 120 Wp

Efficiency: 14.4 %

Voltage at Maximum Power VMPP: 18.1 V

Current at Maximum Power IMPP: 6.6 A

Open Circuit Voltage VOC: 22.2 V

Short Circuit Current ISC: 6.8 A

Power Tolerance Positive: + 10 %

Maximum System Voltage: 600 V

Solar Panels Thermal Ranges

Operating Temperature Range: unknown

Temperature Coefficient of Pmax: -0.45 %/°C

Temperature Coefficient of Voc: -0.36 %/°C

Temperature Coefficient of Isc: 0.105 %/°C

Solar Panel Attributes

Weight: 9.98 kg

Cell Type: Polycrystalline

Cell Count: 36

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 65

Cable Length: unknown

Glass Type: High Transmittance