ReneSola — China
Virtus 420W B All-Black
The ReneSola Virtus 420W B All-Black is a 420W PERC solar panel with 19.5% efficiency. Backed by a 17-year warranty.
Budget TierFEOC: RestrictedBifacial
420W
Wattage
19.5%
Efficiency
PERC
Cell Type
17 years
Warranty
Full Specifications
- Brand
- ReneSola
- Model
- Virtus 420W B All-Black
- Series
- Virtus
- Wattage
- 420W
- Module Efficiency
- 19.5%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 48 lbs
- Warranty
- 17 years
- Est. Price Per Watt
- $2.10
- Est. 7kW System Cost
- $14,700
- Est. 10kW System Cost
- $21,000
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- Yes
- Origin
- China
- FEOC Status
- fail
Other ReneSola Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| Virtus 435W D Plus | 435W | 20% | PERC | $2.25 |
| Virtus 430W C | 430W | 19.8% | PERC | $2.19 |
| Virtus 425W A Ultra | 425W | 19.7% | PERC | $2.16 |
| Virtus 420W E Max | 420W | 19.5% | PERC | $2.10 |
| Virtus 415W E HC | 415W | 19.3% | PERC | $2.04 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Maxeon Maxeon 3 450W D Plus | 450W | 23.3% | $4.61 |
| Maxeon Maxeon 6 450W D Plus | 450W | 23.3% | $4.61 |
| Maxeon Maxeon 7 450W D Plus | 450W | 23.3% | $4.61 |
| Maxeon Maxeon Air 450W D Plus | 450W | 23.3% | $4.61 |
Frequently Asked Questions
How much does a 420W ReneSola Virtus 420W B All-Black cost?
The ReneSola Virtus 420W B All-Black costs approximately $882 per panel ($$2.10/W). A typical 7kW system using this panel would cost around $14,700 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 ReneSola Virtus 420W B All-Black a good solar panel?
The ReneSola Virtus 420W B All-Black has 19.5% efficiency and a 17 years warranty, placing it in the budget tier. This is a solid mid-range panel suitable for most residential installations.
How many ReneSola Virtus 420W B All-Black 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.