EnergyTools

S-Energy — South Korea

SN 420W E HD

The S-Energy SN 420W E HD is a 420W PERC solar panel with 20.3% efficiency. Backed by a 30-year warranty.

Standard Tier Bifacial

420W

Wattage

20.3%

Efficiency

PERC

Cell Type

30 years

Warranty

Full Specifications

Brand
S-Energy
Model
SN 420W E HD
Series
SN
Wattage
420W
Module Efficiency
20.3%
Cell Type
PERC
Dimensions
66-80" x 39-41"
Weight
48 lbs
Warranty
30 years
Est. Price Per Watt
$2.74
Est. 7kW System Cost
$19,180
Est. 10kW System Cost
$27,400
Temperature Coefficient
-0.35%/°C
Bifacial
Yes
Origin
South Korea
FEOC Status
check

Other S-Energy Panels

Model Wattage Efficiency Cell $/W
SN 445W D 445W 21.2% PERC $3.01
SNE 445W D 445W 21.2% PERC $3.01
SN Plus 445W D 445W 21.2% PERC $3.01
SN 440W C All-Black 440W 21% N-Type TOPCon $2.95
SNE 440W C All-Black 440W 21% N-Type TOPCon $2.95

Similar Wattage Panels (Competitors)

Panel Wattage Efficiency $/W
Maxeon Maxeon 3 450W D Plus 450W 23.3% $4.61
Maxeon Maxeon 6 450W D Plus 450W 23.3% $4.61
Maxeon Maxeon 7 450W D Plus 450W 23.3% $4.61
Maxeon Maxeon Air 450W D Plus 450W 23.3% $4.61
Calculate ROI with This Panel Compare Panels Side-by-Side

Frequently Asked Questions

How much does a 420W S-Energy SN 420W E HD cost?
The S-Energy SN 420W E HD costs approximately $1151 per panel ($$2.74/W). A typical 7kW system using this panel would cost around $19,180 before incentives. After the 30% federal tax credit, your net cost drops to $13,426.
Is the S-Energy SN 420W E HD a good solar panel?
The S-Energy SN 420W E HD has 20.3% efficiency and a 30 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many S-Energy SN 420W E HD panels do I need?
For a typical 7kW residential system, you'd need approximately 17 panels. For a 10kW system, plan for about 24 panels. The exact number depends on your roof space, energy usage, and local sun hours.