SunPower — US
Maxeon 350W
The SunPower Maxeon 350W is a 350W IBC solar panel with 19.8% efficiency. Made in US. Backed by a 25-year warranty.
Discontinued panel — still supported for existing owners. SunPower ceased operations (Chapter 11 bankruptcy, August 2024) Specs below reflect the final production version.
Premium Tier🇺🇸 Domestic Content Bonus EligibleBifacial
350W
Wattage
19.8%
Efficiency
IBC
Cell Type
25 years
Warranty
Full Specifications
- Brand
- SunPower
- Model
- Maxeon 350W
- Series
- Maxeon
- Wattage
- 350W
- Module Efficiency
- 19.8%
- Cell Type
- IBC
- Dimensions
- 65-67" x 39-40"
- Weight
- 40 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $3.21
- Est. 7kW System Cost
- $22,470
- Est. 10kW System Cost
- $32,100
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- Yes
- Origin
- US
- FEOC Status
- pass
Other SunPower Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| Maxeon 455W E Pro | 455W | 23.4% | IBC | $4.71 |
| Maxeon 445W D Plus | 445W | 23.1% | IBC | $4.58 |
| Maxeon 440W C | 440W | 22.9% | IBC | $4.50 |
| Maxeon 435W A Ultra | 435W | 22.7% | IBC | $4.42 |
| Maxeon 430W E Max | 430W | 22.6% | IBC | $4.38 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Maxeon 3 370W | 370W | 20.2% | $2.98 |
| Panasonic HIT 380W A | 380W | 20% | $3.00 |
| LG NeON 380W A | 380W | 20% | $3.00 |
| Panasonic HIT 380W A Max | 380W | 20% | $3.00 |
Frequently Asked Questions
How much does a 350W SunPower Maxeon 350W cost?
The SunPower Maxeon 350W costs approximately $1124 per panel ($$3.21/W). A typical 7kW system using this panel would cost around $22,470 before incentives.
⚠ The 30% federal solar tax credit has ended — Section 25D expired December 31, 2025, and the Section 48E construction-start deadline passed 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 SunPower Maxeon 350W a good solar panel?
The SunPower Maxeon 350W has 19.8% efficiency and a 25 years warranty, placing it in the premium tier. This is a solid mid-range panel suitable for most residential installations. It also qualifies for the domestic content bonus under the Inflation Reduction Act.
How many SunPower Maxeon 350W panels do I need?
For a typical 7kW residential system, you'd need approximately 20 panels. For a 10kW system, plan for about 29 panels. The exact number depends on your roof space, energy usage, and local sun hours.