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390Wp
Maxeon Review

SPR-MAX3-390-COM

Monocrystalline
Datasheet
22.10%
Efficiency
220.6 Wp/m²
Power Density
-0.270%/°C
Temp. Coeff. Pmax chart
354W from 390W
Power after 30 years
Smart Insights (data-driven)
  • Efficiency of 22.1% is 1.4pp above the Back Contact 0-400W median (20.7%)
  • 220.6 W/m² power density - 13.7 W/m² more than Back Contact 0-400W median (206.9 W/m²), more power per roof area
  • Temperature coefficient of -0.27%/°C matches the Back Contact 0-400W median
  • Ranked #4861 out of 11672 panels for efficiency in the database
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series Maxeon 3 8 variants
Efficiency Range 20.1% - 22.7%
Avg. Efficiency 21.81%
Technology Back Contact
Dimensions 1690 × 1046 mm
Show series description

The Maxeon 3 series was designed to maximize energy generation from the same roof area – especially when space is limited or the investor wants to minimize the number of modules. A key advantage is the use of IBC (Interdigitated Back Contact) cells, where the metallization is located on the back, allowing the front of the cell to better capture light and eliminating typical losses caused by front conductive strips. In practice, this means high operational efficiency under real-world conditions and more stable production, even in less sunny conditions.

The Maxeon 3 stands out with very low power degradation over time, which translates to longer-lasting savings and greater predictability of the investment's profitability. The robust, metal-based support structure helps to minimize the effects of micro-cracks, resulting in above-average mechanical strength and a lower risk of yield reduction over time. This makes it a good choice for homes, small businesses, and premium installations where longevity and aesthetics without visible busbars are important.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)390 Wp
Module Efficiency22.10%
Voltage at Max Power (Vmpp)64.50 V
Current at Max Power (Impp)6.05 A
Open Circuit Voltage (Voc)75.30 V
Short Circuit Current (Isc)6.55 A
Max System Voltage1000 V
Temperature Coefficients
Temp. Coeff. Pmax-0.270%/°C
Temp. Coeff. Voc-0.236%/°C
Temp. Coeff. Isc0.058%/°C
NOCT-
Cell Technology
Cell TypeMonocrystalline
Cell Count104
BifacialNo
Bifaciality Factor-
Dimensions & Weight
Length1690 mm
Width1046 mm
Height40 mm
Weight19.0 kg
Area1.77 m²
Power Density220.6 Wp/m²
Warranty
Product Warranty40 years
Performance Warranty40 years
End-of-Warranty Output88.2%
First Year Degradation2.00%
Annual Degradation0.25%/year
Key Specifications
22.10%
Efficiency
390 Wp
Power
-0.27%/°C
Temp Coeff
40 yrs
Warranty
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