MonocrystallineBifacialPERC
Waaree Energies undefined Bi-31-420

Waaree Energies • ahnay series bi 31-420-455

Bi-31-420420W

BifacialPERC
Region:India
Region shows where the seller or factory is located. Most ship globally, and all listed suppliers should be able to ship to your current location.
420W
Power Output
19.32%
Efficiency
2094 x 1038
Dimensions (mm)
12 Yrs
Product Warranty
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Key Features

  • Better performance under all climatic conditions
  • Split junction box Reduced power losses up to 1/4 times
  • PID resistant with long term reliability
  • Sustain heavy wind & snow loads (2400 pa & 5400 pa)

Waaree Energies Bi-31-420 Panels: What Your System Looks Like

Based on a standard 10kW residential installation

10kW System Size
24 Panels
Estimated Roof Area
560 sq.ft. (52 m²)
Avg. Yearly Production
11,500 kWh
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Electrical Data (STC)

Maximum Power (Pmax)420 W
Module Efficiency19.32 %
Voltage at Pmax (Vmp)40.61 V
Current at Pmax (Imp)10.35 A
Open Circuit Voltage (Voc)49.01 V
Short Circuit Current (Isc)11.04 A

Mechanical Data

Dimensions2094 x 1038 x 35 mm
Weight27.5 kg
Cell TypeMonocrystalline
Number of Cells144
Front Glass2 mm
FrameAnodized Aluminium

Temperature Ratings

Temperature Coefficient of Pmax-0.365 %/°C
Temperature Coefficient of Voc-0.285 %/°C
Temperature Coefficient of Isc0.055 %/°C
Operating Temperature Range-40 - 85 °C

Similar Products

1038 x 2094 mm
Roof Fit Tool

Will These Panels Fit Your Roof?

Don’t guess your solar potential. Our Roof Layout Designer uses the exact dimensions of the Waaree Energies Bi-31-420 (420W modules) to map out your system. Visually plan your array to see exactly how many modules your roof can support based on its specific footprint.

Precision Layout Preview: See exactly how the 420W modules sit on your roof.
Accurate Technical Spacing: Factors in real-world gaps and mounting rails.
Instant System Sizing: Automatically calculates total kW output for this specific panel.
Optimization Tips: Suggestions to maximize your roof’s energy density.
Map This Panel on My Roof

Ideal Use Case

The Waaree Energies Bi-31-420 is designed for specific solar energy applications. This panel is an excellent choice if you:

Build a standard residential 420W system
Balance efficiency with cost-effectiveness
Want proven monocrystalline technology for better performance
Install commercial or utility-scale systems

Don’t guess your solar setup — calculate it first!

Take our Solar Quiz to get a personalized recommendation for panels, inverter, battery capacity, and system size — before you spend money on the wrong setup.

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Product FAQ

How many Waaree Energies Bi-31-420 panels do I need for my home?

The number of panels depends on your energy consumption and roof area. At 420W per panel, a typical 10kW residential system requires about 24 modules. Use our Solar Roof Calculator to get a precise layout based on your actual roof dimensions.

What is the efficiency of Waaree Energies Bi-31-420?

This panel has an efficiency of 19.32%, using Bifacial, PERC cell technology. Higher efficiency means more electricity per square meter, which is especially valuable when roof space is limited.

Can I get more power from the bifacial Waaree Energies Bi-31-420?

Yes. Since this is a Bifacial module, it can capture sunlight from both sides. Depending on the reflectivity (albedo) of your roof surface, you can see a gain of 5% to 25% in total energy yield.

What are the dimensions of the Waaree Energies Bi-31-420?

The module dimensions are 2094mm × 1038mm × 35mm. Always account for these measurements plus fire setbacks and mounting clearances when planning your solar layout.

Is Waaree Energies Bi-31-420 compatible with standard inverters?

Yes, these panels work with most string and hybrid inverters. However, you must check the Voc (Open Circuit Voltage) and Imp (Current at Max Power) against your inverter's MPPT specs.

What warranty does the Waaree Energies Bi-31-420 come with?

This panel includes a 12-year product warranty from Waaree Energies. Solar panels typically degrade about 0.4–0.5% per year, meaning this module should retain over 87% of its original output after 30 years.