Panasonic — Japan
HIT Plus 390W B Plus
The Panasonic HIT Plus 390W B Plus is a 390W HJT solar panel with 20.6% efficiency. Made in Japan. Backed by a 25-year warranty.
Premium TierBifacial
390W
Wattage
20.6%
Efficiency
HJT
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Panasonic
- Model
- HIT Plus 390W B Plus
- Series
- HIT Plus
- Wattage
- 390W
- Module Efficiency
- 20.6%
- Cell Type
- HJT
- Dimensions
- 65-67" x 39-40"
- Weight
- 44 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $3.28
- Est. 7kW System Cost
- $22,960
- Est. 10kW System Cost
- $32,800
- 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 420W B Silver | 420W | 22.2% | $4.21 |
| SunPower Performance 420W B Silver | 420W | 22.2% | $4.21 |
| SunPower X-Series 420W B Silver | 420W | 22.2% | $4.21 |
| SunPower E-Series 420W B Silver | 420W | 22.2% | $4.21 |
Frequently Asked Questions
How much does a 390W Panasonic HIT Plus 390W B Plus cost?
The Panasonic HIT Plus 390W B Plus costs approximately $1279 per panel ($$3.28/W). A typical 7kW system using this panel would cost around $22,960 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 Plus 390W B Plus a good solar panel?
The Panasonic HIT Plus 390W B Plus has 20.6% efficiency and a 25 years warranty, placing it in the premium tier. This is a solid mid-range panel suitable for most residential installations.
How many Panasonic HIT Plus 390W B Plus panels do I need?
For a typical 7kW residential system, you'd need approximately 18 panels. For a 10kW system, plan for about 26 panels. The exact number depends on your roof space, energy usage, and local sun hours.