JA Solar DeepBlue 4.0 Pro 460W Specifications & Review
JA Solar's DeepBlue 4.0 Pro uses N-type TOPCon technology to deliver 460W with excellent 22.4% efficiency for residential installations.
What Makes the JA Solar DeepBlue 4.0 Pro 460W Different
The JA Solar DeepBlue 4.0 Pro 460W represents JA Solar's premium TOPCon N-type platform, achieving 22.4% module efficiency — one of the highest in the residential panel segment. JA Solar is the world's #2 solar module manufacturer by shipment volume, and the DeepBlue 4.0 Pro series is their flagship N-type product line. The 120-cell design uses advanced passivated contact technology to minimize carrier recombination losses, yielding a strong -0.29%/°C temperature coefficient. Bifacial capability adds 5-15% energy gain when installed on ground mounts or trackers with reflective surfaces below. JA Solar's 15-year product and 30-year performance warranty with 1% first-year and 0.4% annual degradation rate positions this panel for strong long-term returns. At 23 kg and 1762×1134mm, it handles like a standard residential panel.
Key Specifications
| Brand | JA Solar |
| Model | JA Solar DeepBlue 4.0 Pro 460W |
| Power Output | 460W |
| Efficiency | 22.4% |
| Power Density | 21.4 W/sq ft |
| Cell Type | TOPCon N-type |
| Cell Count | 120 cells |
| Dimensions | 1762 x 1134 x 30 mm |
| Weight | 23 kg |
| Open Circuit Voltage (Voc) | 44.5V |
| Max Power Voltage (Vmp) | 37.5V |
| Short Circuit Current (Isc) | 13.25A |
| Max Power Current (Imp) | 12.27A |
| Temp Coefficient (Pmax) | -0.29%/°C |
| Product Warranty | 15 years |
| Performance Warranty | 30 years |
| First Year Degradation | 1% |
| Annual Degradation | 0.4% |
| Country of Manufacture | China |
| Certifications | IEC 61215, IEC 61730, UL 1703 |
| Panel Type | Bifacial |
| Snow Load | 5400 Pa (112.8 psf) — Heavy Snow Rated |
| Wind Load | 2400 Pa (50.1 psf) |
Pros & Cons
Pros
- ✓ Strong 22.4% efficiency
- ✓ Good size-to-power ratio
- ✓ Reliable JA Solar quality
- ✓ 30-year warranty
Cons
- ✗ Less common in US market
- ✗ Limited installer network
- ✗ Mid-range pricing
Best For
Homeowners wanting efficient N-type technology from a Tier 1 manufacturer.
Is the JA Solar DeepBlue 4.0 Pro 460W Worth It?
The JA Solar DeepBlue 4.0 Pro 460W delivers 460W of power at 22.4% module efficiency, which is above the current industry average of approximately 21%. This higher efficiency means you need fewer panels to reach your target system size, saving roof space and potentially reducing mounting hardware costs.
From a warranty perspective, the DeepBlue 4.0 Pro 460W comes with a solid 15-year product warranty and a 30-year performance guarantee. The industry standard for product warranties ranges from 12 to 25 years, so this panel offers solid coverage that meets or exceeds the industry midpoint. At the end of 30 years, the panel is guaranteed to still produce approximately 87.4% of its rated output, with first-year degradation of 1% and just 0.4% per year after that.
Pricing varies by region and installer, but the DeepBlue 4.0 Pro 460W's combination of 22.4% efficiency and 15-year warranty should be weighed against per-watt quotes from your installer. Request at least three quotes to ensure you are getting competitive pricing for this tier of panel.
For hot climates, the temperature coefficient of -0.29%/°C is excellent. This is better than the typical range of -0.30% to -0.40%/°C, meaning the DeepBlue 4.0 Pro 460W retains more output on scorching summer days, a significant advantage in states like Arizona, Texas, and Florida. Overall, the JA Solar DeepBlue 4.0 Pro 460W represents a strong value proposition for most residential installations.
Real-World Performance
In real-world conditions, the JA Solar DeepBlue 4.0 Pro 460W delivers consistent energy production shaped by its -0.29%/°C temperature coefficient. On a hot summer day when panel surface temperatures reach 65°C (40°C above STC), the DeepBlue 4.0 Pro 460W loses approximately 11.6% of rated output — better than PERC panels that lose 13-14% under the same conditions. Over a full year in a typical US location, expect annual specific yield of 1,500-1,800 kWh per kW installed, depending on location, tilt, and shading. The 1% first-year degradation settles into 0.4% annual degradation thereafter; after 25 years the DeepBlue 4.0 Pro 460W should still produce approximately 89.4% of its original rating. In bifacial installations on light-colored ground surfaces or trackers, expect 5-15% additional energy beyond the rated front-side output. The 120 half-cut cells provide improved shade tolerance compared to full-cell designs — when one cell is shaded, only one sub-string is affected rather than an entire string, limiting production losses to approximately one-third of the panel rather than one-half.
Who Should Buy the JA Solar DeepBlue 4.0 Pro 460W?
System Design Tips
For string inverter systems, the JA Solar DeepBlue 4.0 Pro 460W's Voc of 44.5V allows up to 13 panels per string on a 600V inverter, or 10 panels per string on 480V systems. The Isc of 13.25A is within the input range of all major residential string inverters and microinverters. For microinverter pairing, the Enphase IQ8A (366VA) or IQ8H (384VA) handles the 460W output well with a DC/AC ratio of 1.3-1.2. SolarEdge P505 optimizers pair well for optimizer-based systems. Size your inverter at 75-90% of total DC wattage for optimal clipping management — for a 22-panel array (10.1 kW DC), a 8 W AC inverter is a good match. The panel handles 5400 Pa snow load and 2400 Pa wind load.
Price Estimate
The JA Solar DeepBlue 4.0 Pro 460W is sold through residential solar distributors and installers. JA Solar pricing varies by distributor and order volume. For a 22-panel system (10.1 kW DC), total installed cost including panels, inverter, racking, wiring, permitting, and labor typically runs $2.50-3.50/W, or approximately $30,360-$35,420 before the 30% federal ITC. After ITC: approximately $21,252-$24,794.
How the JA Solar DeepBlue 4.0 Pro 460W Compares
| Model | Wattage | Efficiency | W/sq ft | Warranty | Snow Load | Cell Type |
|---|---|---|---|---|---|---|
| JA Solar DeepBlue 4.0 Pro 460W (this panel) | 460W | 22.4% | 21.4 | 15 yrs | 5400 Pa | TOPCon N-type |
| REC Alpha Pure-R 460W | 460W | 22.2% | 20.5 | 25 yrs | 5400 Pa | HJT (Heterojunction) |
| Astronergy ASTRO N5 460W | 460W | 21.3% | 21.4 | 12 yrs | 5400 Pa | PERC Mono |
| Boviet Solar Vega 460W | 460W | 22% | 21.4 | 15 yrs | 5400 Pa | TOPCon N-type |
Compare This Panel
Installation & Compatibility
System Voltage & String Sizing
- Open Circuit Voltage (Voc)
- 44.5V
- Max Power Voltage (Vmp)
- 37.5V
- Short Circuit Current (Isc)
- 13.25A
- Max Power Current (Imp)
- 12.27A
- Max Panels per String (600V)
- 13 panels
Based on NEC 600V residential limit. Actual string sizing should account for cold-temperature Voc rise. Consult your installer or use a string sizing tool for your specific location.
Mounting Requirements
- Dimensions
- 1762 x 1134 x 30 mm
- Weight
- 23 kg (50.7 lbs)
- Area per Panel
- 21.5 sq ft
- Weight per sq ft
- 2.4 lbs/sq ft
Recommended Inverter Types
- - Microinverters: Ideal for shaded roofs or complex layouts. Match to panels rated 460W+.
- - String Inverters: Cost-effective for unshaded arrays. Ensure MPPT range covers 37.5V.
- - Hybrid Inverters: Best if adding battery storage. Check DC input specs match panel Voc of 44.5V.
Frequently Asked Questions
How efficient is the JA Solar DeepBlue 4.0 Pro 460W compared to other panels?
The DeepBlue 4.0 Pro 460W achieves 22.4% module efficiency, which is above average for N-type residential panels. N-type TOPCon panels in our database range from 21.5% to 23.0%, placing the DeepBlue 4.0 Pro 460W in the upper half of that range. Higher efficiency means more watts per square foot of roof space.
What is the warranty on the JA Solar DeepBlue 4.0 Pro 460W?
JA Solar provides a 15-year product warranty covering manufacturing defects and a 30-year performance warranty guaranteeing output levels. The performance warranty typically starts at 99% after year 1 and degrades by 0.4% per year, guaranteeing approximately 89.4% output at year 25. The product warranty is in line with industry standards.
How many JA Solar DeepBlue 4.0 Pro 460W panels do I need for my home?
For a typical US home using 10,000 kWh per year, you need approximately 22 panels (10.1 kW system) assuming 4-5 peak sun hours per day. This varies significantly by location — homes in Arizona may need 19-21 panels while homes in the Pacific Northwest may need 24-26 panels. Your installer will calculate the exact number based on your utility bills, roof orientation, shading, and local solar resource.
What is the efficiency of the JA Solar DeepBlue 4.0 Pro 460W?
The JA Solar DeepBlue 4.0 Pro 460W achieves 22.4% module efficiency using TOPCon N-type cell technology. This is above the industry average for residential solar panels in 2026.
What warranty does the JA Solar DeepBlue 4.0 Pro 460W include?
It comes with a 15-year product warranty and a 30-year performance warranty guaranteeing output at approximately 87.4% of rated power at the end of the warranty period.
How does the JA Solar DeepBlue 4.0 Pro 460W perform in hot weather?
With a temperature coefficient of -0.29%/°C, the DeepBlue 4.0 Pro 460W handles heat well with minimal power loss. Every degree above 25°C reduces output by 0.29%.
What size system can I build with the JA Solar DeepBlue 4.0 Pro 460W?
At 460W per panel, you would need approximately 18 panels for an 8 kW system or 22 panels for a 10 kW system. Each panel measures 1762 x 1134 mm (21.5 sq ft).
What inverter is best with the JA Solar DeepBlue 4.0 Pro 460W?
The JA Solar DeepBlue 4.0 Pro 460W works well with both string inverters and microinverters. For string inverters, choose one with a maximum input voltage above 44.5V and an MPPT voltage range that covers 37.5V. Microinverters rated for 460W+ panels are also an excellent choice, offering panel-level monitoring and shade tolerance. Popular options include Enphase IQ8 series microinverters and SolarEdge string inverters with power optimizers.
How long will the JA Solar DeepBlue 4.0 Pro 460W last?
The JA Solar DeepBlue 4.0 Pro 460W is built to last well beyond its 30-year performance warranty. With first-year degradation of 1% and annual degradation of 0.4% thereafter, the panel will still produce approximately 87.4% of its rated power after 30 years. Most modern solar panels continue generating useful power for 30-40 years, though output gradually decreases over time.
Is the JA Solar DeepBlue 4.0 Pro 460W good for Arizona and other sunny states?
Yes, the JA Solar DeepBlue 4.0 Pro 460W is an excellent choice for hot, sunny states like Arizona, Nevada, and Texas. Its temperature coefficient of -0.29%/°C is better than the industry average of -0.35%/°C, meaning it retains more power output on hot days. Higher sun exposure in these states means more total energy production throughout the year, often offsetting any heat-related losses.
Is the JA Solar DeepBlue 4.0 Pro 460W worth the money?
The JA Solar DeepBlue 4.0 Pro 460W delivers 22.4% efficiency, which is above the industry average of ~21%. Combined with a solid 15-year product warranty and 30-year performance guarantee, it offers strong value for homeowners seeking reliable solar generation.
You Might Also Like
Last updated: February 2026