LG — South Korea
NeON 405W B
The LG NeON 405W B is a 405W N-Type solar panel with 21.0% efficiency. Backed by a 25-year warranty.
Discontinued panel — still supported for existing owners. LG exited solar panel manufacturing in February 2022 Specs below reflect the final production version.
Premium Tier
405W
Wattage
21%
Efficiency
N-Type
Cell Type
25 years
Warranty
Full Specifications
- Brand
- LG
- Model
- NeON 405W B
- Series
- NeON
- Wattage
- 405W
- Module Efficiency
- 21%
- Cell Type
- N-Type
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $3.50
- Est. 7kW System Cost
- $24,500
- Est. 10kW System Cost
- $35,000
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- No
- Origin
- South Korea
- FEOC Status
- check
Other LG Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| NeON 435W E Pro | 435W | 22.2% | N-Type | $4.10 |
| NeON 430W D Plus | 430W | 22% | N-Type | $4.00 |
| NeON 425W C | 425W | 21.8% | N-Type | $3.90 |
| NeON 425W A Ultra | 425W | 21.8% | N-Type | $3.90 |
| NeON 420W E Max | 420W | 21.6% | N-Type | $3.80 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 435W A Ultra | 435W | 22.7% | $4.42 |
| Maxeon 3 435W E Max | 435W | 22.7% | $4.29 |
| SunPower Maxeon 430W E Max | 430W | 22.6% | $4.38 |
| SunPower Maxeon 430W C Black | 430W | 22.6% | $4.38 |
Frequently Asked Questions
How much does a 405W LG NeON 405W B cost?
The LG NeON 405W B costs approximately $1418 per panel ($$3.50/W). A typical 7kW system using this panel would cost around $24,500 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 LG NeON 405W B a good solar panel?
The LG NeON 405W B has 21% efficiency and a 25 years warranty, placing it in the premium tier. This is above-average efficiency, making it a strong choice.
How many LG NeON 405W B panels do I need?
For a typical 7kW residential system, you'd need approximately 18 panels. For a 10kW system, plan for about 25 panels. The exact number depends on your roof space, energy usage, and local sun hours.