Hyundai Energy — South Korea

HiISS Plus 360W Plus

The Hyundai Energy HiISS Plus 360W Plus is a 360W N-Type TOPCon solar panel with 18.3% efficiency. Backed by a 25-year warranty.

Standard Tier

360W

Wattage

18.3%

Efficiency

N-Type TOPCon

Cell Type

25 years

Warranty

Full Specifications

Brand
Hyundai Energy
Model
HiISS Plus 360W Plus
Series
HiISS Plus
Wattage
360W
Module Efficiency
18.3%
Cell Type
N-Type TOPCon
Dimensions
65-67" x 39-40"
Weight
41 lbs
Warranty
25 years
Est. Price Per Watt
$1.99
Est. 7kW System Cost
$13,930
Est. 10kW System Cost
$19,900
Temperature Coefficient
-0.25%/°C
Bifacial
No
Origin
South Korea
FEOC Status
check

Other Hyundai Energy Panels

ModelWattageEfficiencyCell$/W
HiISS 455W D455W21.7%PERC$3.01
HiISS Plus 455W D455W21.7%PERC$3.01
Green 455W D455W21.7%PERC$3.01
HiISS 450W C All-Black450W21.5%N-Type TOPCon$2.95
HiISS Plus 450W C All-Black450W21.5%N-Type TOPCon$2.95

Similar Wattage Panels (Competitors)

PanelWattageEfficiency$/W
SunPower Maxeon 390-B Silver390W21.2%$3.79
SunPower Maxeon 390W B Plus390W21.2%$3.79
SunPower Maxeon 390W B Black390W21.2%$3.79
SunPower Performance 390-B Silver390W21.2%$3.79

Frequently Asked Questions

How much does a 360W Hyundai Energy HiISS Plus 360W Plus cost?
The Hyundai Energy HiISS Plus 360W Plus costs approximately $716 per panel ($$1.99/W). A typical 7kW system using this panel would cost around $13,930 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 Hyundai Energy HiISS Plus 360W Plus a good solar panel?
The Hyundai Energy HiISS Plus 360W Plus has 18.3% efficiency and a 25 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many Hyundai Energy HiISS Plus 360W Plus panels do I need?
For a typical 7kW residential system, you'd need approximately 20 panels. For a 10kW system, plan for about 28 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.