Heliene — Canada

Heliene 420W C

The Heliene Heliene 420W C is a 420W N-Type TOPCon solar panel with 20.3% efficiency. Backed by a 30-year warranty.

Standard Tier

420W

Wattage

20.3%

Efficiency

N-Type TOPCon

Cell Type

30 years

Warranty

Full Specifications

Brand
Heliene
Model
Heliene 420W C
Series
Heliene
Wattage
420W
Module Efficiency
20.3%
Cell Type
N-Type TOPCon
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
-0.25%/°C
Bifacial
No
Origin
Canada
FEOC Status
unknown

Other Heliene Panels

ModelWattageEfficiencyCell$/W
Heliene 445W D445W21.2%PERC$3.01
Heliene 440W C All-Black440W21%N-Type TOPCon$2.95
Heliene 435W E Pro435W20.9%N-Type TOPCon$2.92
Heliene 430W B BF430W20.7%PERC$2.86
Heliene 425W D Plus425W20.5%PERC$2.80

Similar Wattage Panels (Competitors)

PanelWattageEfficiency$/W
Maxeon Maxeon 3 450W D Plus450W23.3%$4.61
Maxeon Maxeon 6 450W D Plus450W23.3%$4.61
Maxeon Maxeon 7 450W D Plus450W23.3%$4.61
Maxeon Maxeon Air 450W D Plus450W23.3%$4.61

Frequently Asked Questions

How much does a 420W Heliene Heliene 420W C cost?
The Heliene Heliene 420W C costs approximately $1151 per panel ($$2.74/W). A typical 7kW system using this panel would cost around $19,180 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 Heliene Heliene 420W C a good solar panel?
The Heliene Heliene 420W C 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 Heliene Heliene 420W C 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.

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.