SunPower — US
E-Series 440W C
The SunPower E-Series 440W C is a 440W IBC solar panel with 22.9% efficiency. Made in US. Backed by a 30-year warranty.
Premium Tier
🇺🇸 Domestic Content Bonus Eligible
440W
Wattage
22.9%
Efficiency
IBC
Cell Type
30 years
Warranty
Full Specifications
- Brand
- SunPower
- Model
- E-Series 440W C
- Series
- E-Series
- Wattage
- 440W
- Module Efficiency
- 22.9%
- Cell Type
- IBC
- Dimensions
- 78-82" x 39-41"
- Weight
- 52 lbs
- Warranty
- 30 years
- Est. Price Per Watt
- $4.50
- Est. 7kW System Cost
- $31,500
- Est. 10kW System Cost
- $45,000
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- No
- Origin
- US
- FEOC Status
- pass
Other SunPower Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| Maxeon 455W E Pro | 455W | 23.4% | IBC | $4.71 |
| Performance 455W E Pro | 455W | 23.4% | IBC | $4.71 |
| X-Series 455W E Pro | 455W | 23.4% | IBC | $4.71 |
| E-Series 455W E Pro | 455W | 23.4% | IBC | $4.71 |
| P-Series 455W E Pro | 455W | 23.4% | IBC | $4.71 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Maxeon Maxeon 3 455W E Pro | 455W | 23.5% | $4.72 |
| Maxeon Maxeon 6 455W E Pro | 455W | 23.5% | $4.72 |
| Maxeon Maxeon 7 455W E Pro | 455W | 23.5% | $4.72 |
| Maxeon Maxeon Air 455W E Pro | 455W | 23.5% | $4.72 |
Frequently Asked Questions
How much does a 440W SunPower E-Series 440W C cost?
The SunPower E-Series 440W C costs approximately $1980 per panel ($$4.50/W). A typical 7kW system using this panel would cost around $31,500 before incentives. After the 30% federal tax credit, your net cost drops to $22,050.
Is the SunPower E-Series 440W C a good solar panel?
The SunPower E-Series 440W C has 22.9% efficiency and a 30 years warranty, placing it in the premium tier. This is above-average efficiency, making it a strong choice. It also qualifies for the domestic content bonus under the Inflation Reduction Act.
How many SunPower E-Series 440W C panels do I need?
For a typical 7kW residential system, you'd need approximately 16 panels. For a 10kW system, plan for about 23 panels. The exact number depends on your roof space, energy usage, and local sun hours.