S-Energy — South Korea

SNE 445W D

The S-Energy SNE 445W D is a 445W PERC solar panel with 21.2% efficiency. Backed by a 30-year warranty.

Standard TierBifacial

445W

Wattage

21.2%

Efficiency

PERC

Cell Type

30 years

Warranty

Full Specifications

Brand
S-Energy
Model
SNE 445W D
Series
SNE
Wattage
445W
Module Efficiency
21.2%
Cell Type
PERC
Dimensions
78-82" x 39-41"
Weight
52 lbs
Warranty
30 years
Est. Price Per Watt
$3.01
Est. 7kW System Cost
$21,070
Est. 10kW System Cost
$30,100
Temperature Coefficient
-0.35%/°C
Bifacial
Yes
Origin
South Korea
FEOC Status
check

Other S-Energy Panels

ModelWattageEfficiencyCell$/W
SN 445W D445W21.2%PERC$3.01
SN Plus 445W D445W21.2%PERC$3.01
SN 440W C All-Black440W21%N-Type TOPCon$2.95
SNE 440W C All-Black440W21%N-Type TOPCon$2.95
SN Plus 440W C All-Black440W21%N-Type TOPCon$2.95

Similar Wattage Panels (Competitors)

PanelWattageEfficiency$/W
Maxeon Maxeon 3 455W E Pro455W23.5%$4.72
Maxeon Maxeon 6 455W E Pro455W23.5%$4.72
Maxeon Maxeon 7 455W E Pro455W23.5%$4.72
Maxeon Maxeon Air 455W E Pro455W23.5%$4.72

Frequently Asked Questions

How much does a 445W S-Energy SNE 445W D cost?
The S-Energy SNE 445W D costs approximately $1339 per panel ($$3.01/W). A typical 7kW system using this panel would cost around $21,070 before incentives.

⚠ The 30% Federal Solar Tax Credit (48E/ITC) expired July 4, 2026.

Selecting 30% ITC assumes you began construction before this deadline. Most new purchases no longer qualify.Learn about your options after the deadline →

Is the S-Energy SNE 445W D a good solar panel?
The S-Energy SNE 445W D has 21.2% efficiency and a 30 years warranty, placing it in the standard tier. This is above-average efficiency, making it a strong choice.
How many S-Energy SNE 445W D panels do I need?
For a typical 7kW residential system, you'd need approximately 16 panels. For a 10kW system, plan for about 23 panels. The exact number depends on your roof space, energy usage, and local sun hours.

Written & reviewed by

Jeremy Wolfe — Senior Solar Energy Analyst

Jeremy Wolfe is a solar energy analyst specializing in residential photovoltaic economics, federal and state incentive policy, and return-on-investment modeling for homeowners. He leads EnergyTools' solar research program and methodology.

  • 10+ years analyzing residential solar economics and payback modeling
  • Lead researcher for EnergyTools' 50-state solar cost-per-watt database
  • Author of 100+ solar ROI, payback, and incentive analyses

Methodology & data sources:NREL PVWatts, EPA FuelEconomy.gov, state utility commissions— updated 2026.