Panasonic — Japan
EverVolt VK-40 HC
The Panasonic EverVolt VK-40 HC is a 405W HJT solar panel with 21.4% efficiency. Made in Japan. Backed by a 25-year warranty.
Premium TierBifacial
405W
Wattage
21.4%
Efficiency
HJT
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Panasonic
- Model
- EverVolt VK-40 HC
- Series
- EverVolt VK
- Wattage
- 405W
- Module Efficiency
- 21.4%
- Cell Type
- HJT
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $3.66
- Est. 7kW System Cost
- $25,620
- Est. 10kW System Cost
- $36,600
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- Yes
- Origin
- Japan
- FEOC Status
- likely_pass
Other Panasonic Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| EverVolt 425W E Pro | 425W | 22.5% | HJT | $4.18 |
| EverVolt VK 425W E Pro | 425W | 22.5% | HJT | $4.18 |
| HIT 425W E Pro | 425W | 22.5% | HJT | $4.18 |
| HIT Plus 425W E Pro | 425W | 22.5% | HJT | $4.18 |
| EverVolt 420W A Ultra | 420W | 22.3% | HJT | $4.08 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 435W A Ultra | 435W | 22.7% | $4.42 |
| SunPower Performance 435W A Ultra | 435W | 22.7% | $4.42 |
| SunPower X-Series 435W A Ultra | 435W | 22.7% | $4.42 |
| SunPower E-Series 435W A Ultra | 435W | 22.7% | $4.42 |
Frequently Asked Questions
How much does a 405W Panasonic EverVolt VK-40 HC cost?
The Panasonic EverVolt VK-40 HC costs approximately $1482 per panel ($$3.66/W). A typical 7kW system using this panel would cost around $25,620 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 EverVolt VK-40 HC a good solar panel?
The Panasonic EverVolt VK-40 HC has 21.4% efficiency and a 25 years warranty, placing it in the premium tier. This is above-average efficiency, making it a strong choice.
How many Panasonic EverVolt VK-40 HC 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.