Panasonic — Japan

HIT 400W C Black

The Panasonic HIT 400W C Black is a 400W HJT solar panel with 21.1% efficiency. Made in Japan. Backed by a 30-year warranty.

Premium Tier

400W

Wattage

21.1%

Efficiency

HJT

Cell Type

30 years

Warranty

Full Specifications

Brand
Panasonic
Model
HIT 400W C Black
Series
HIT
Wattage
400W
Module Efficiency
21.1%
Cell Type
HJT
Dimensions
66-80" x 39-41"
Weight
46 lbs
Warranty
30 years
Est. Price Per Watt
$3.52
Est. 7kW System Cost
$24,640
Est. 10kW System Cost
$35,200
Temperature Coefficient
-0.25%/°C
Bifacial
No
Origin
Japan
FEOC Status
likely_pass

Other Panasonic Panels

ModelWattageEfficiencyCell$/W
EverVolt 425W E Pro425W22.5%HJT$4.18
EverVolt VK 425W E Pro425W22.5%HJT$4.18
HIT 425W E Pro425W22.5%HJT$4.18
HIT Plus 425W E Pro425W22.5%HJT$4.18
EverVolt 420W A Ultra420W22.3%HJT$4.08

Similar Wattage Panels (Competitors)

PanelWattageEfficiency$/W
SunPower Maxeon 430W E Max430W22.6%$4.38
SunPower Maxeon 430W B All-Black430W22.6%$4.38
SunPower Maxeon 430W C Black430W22.6%$4.38
SunPower Performance 430W E Max430W22.6%$4.38

Frequently Asked Questions

How much does a 400W Panasonic HIT 400W C Black cost?
The Panasonic HIT 400W C Black costs approximately $1408 per panel ($$3.52/W). A typical 7kW system using this panel would cost around $24,640 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 Panasonic HIT 400W C Black a good solar panel?
The Panasonic HIT 400W C Black has 21.1% efficiency and a 30 years warranty, placing it in the premium tier. This is above-average efficiency, making it a strong choice.
How many Panasonic HIT 400W C Black panels do I need?
For a typical 7kW residential system, you'd need approximately 18 panels. For a 10kW system, plan for about 25 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.