Waaree Solar — India
WS 390W C Silver
The Waaree Solar WS 390W C Silver is a 390W PERC solar panel with 19.0% efficiency. Backed by a 12-year warranty.
Standard TierBifacial
390W
Wattage
19%
Efficiency
PERC
Cell Type
12 years
Warranty
Full Specifications
- Brand
- Waaree Solar
- Model
- WS 390W C Silver
- Series
- WS
- Wattage
- 390W
- Module Efficiency
- 19%
- Cell Type
- PERC
- Dimensions
- 65-67" x 39-40"
- Weight
- 44 lbs
- Warranty
- 12 years
- Est. Price Per Watt
- $1.80
- Est. 7kW System Cost
- $12,600
- Est. 10kW System Cost
- $18,000
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- Yes
- Origin
- India
- FEOC Status
- check
Other Waaree Solar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| WS 450W D | 450W | 20.5% | PERC | $2.40 |
| WS 445W C All-Black | 445W | 20.4% | N-Type TOPCon | $2.36 |
| WS 440W E Pro | 440W | 20.2% | N-Type TOPCon | $2.28 |
| WS 435W B BF | 435W | 20.1% | PERC | $2.24 |
| WS 430W D Plus | 430W | 20% | PERC | $2.20 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Panasonic EverVolt 420W A Ultra | 420W | 22.3% | $4.08 |
| Panasonic EverVolt 420W D Plus | 420W | 22.3% | $4.08 |
| Panasonic EverVolt VK 420W A Ultra | 420W | 22.3% | $4.08 |
| Panasonic EverVolt VK 420W D Plus | 420W | 22.3% | $4.08 |
Frequently Asked Questions
How much does a 390W Waaree Solar WS 390W C Silver cost?
The Waaree Solar WS 390W C Silver costs approximately $702 per panel ($$1.80/W). A typical 7kW system using this panel would cost around $12,600 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 Waaree Solar WS 390W C Silver a good solar panel?
The Waaree Solar WS 390W C Silver has 19% efficiency and a 12 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many Waaree Solar WS 390W C Silver 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.