Trina Solar Vertex S 420W vs Astronergy ASTRO N5 460W
The Trina Solar Vertex S 420W wins this comparison by a clear margin. It offers better long-term durability with 15-year warranty. For most residential installations, the Trina Solar Vertex S 420W is the stronger choice.
Key Differences
- • Trina Solar Vertex S 420W is rated at 420W while Astronergy ASTRO N5 460W is rated at 460W, a 40W difference.
- • Both achieve identical 21.3% module efficiency.
- • Trina Solar Vertex S 420W comes with a 15-year product warranty vs 12 years for the other.
Specifications Breakdown
Module Efficiency
Both the Trina Solar Vertex S 420W and Astronergy ASTRO N5 460W share identical 21.3% module efficiency, producing comparable power per unit area. The Trina Solar Vertex S 420W generates 210.2 W/m² while the Astronergy ASTRO N5 460W generates 230.2 W/m² based on their respective panel dimensions. With matched efficiency, neither panel holds a density advantage for space-constrained rooftop installations, so other factors like warranty coverage and temperature performance become the deciding metrics.
Power Output
The Astronergy ASTRO N5 460W delivers 460W per panel versus 420W for the Trina Solar Vertex S 420W, a 40W difference per module. To build an 8 kW residential system, you would need 20 Trina Solar Vertex S 420W panels or 18 Astronergy ASTRO N5 460W panels. Choosing the higher-wattage option saves 2 panels, reducing total racking hardware, wiring, and installation labor costs. Higher wattage per panel is particularly valuable for commercial-scale installations where panel count directly impacts balance-of-system costs.
Temperature Coefficient
Both panels share an identical temperature coefficient of -0.34%/°C, meaning they lose power at the same rate as cell temperature rises above the 25°C standard test baseline. At 65°C cell temperature, both retain 93.2% of rated power. Neither panel has a thermal performance advantage, which makes this specification a non-factor in the comparison.
Warranty Coverage
The Trina Solar Vertex S 420W is backed by a 15-year product warranty and 25-year performance guarantee, while the Astronergy ASTRO N5 460W offers 12-year product and 25-year performance coverage. The Trina Solar Vertex S 420W provides 3 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1.5% first year then 0.5%/year for Trina Solar Vertex S 420W; 1.5% first year then 0.5%/year for Astronergy ASTRO N5 460W), after 25 years the Trina Solar Vertex S 420W should retain approximately 86.5% of original output versus 86.5% for the Astronergy ASTRO N5 460W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Trina Solar Vertex S 420W measures 1762×1134×30mm and weighs 21.8 kg, while the Astronergy ASTRO N5 460W measures 1762×1134×30mm at 23 kg. 2.00 m² of panel area for the Trina Solar Vertex S 420W versus 2.00 m² for the Astronergy ASTRO N5 460W. Their weights are closely matched, so neither panel imposes a significantly different structural load on the mounting system. Similar footprints mean both panels fit comparably on standard residential rooftop configurations.
Specification Comparison
| Specification | Trina Solar Vertex S 420W | Astronergy ASTRO N5 460W |
|---|---|---|
| Power | 420W | 460W |
| Efficiency | 21.3% | 21.3% |
| Power Density | 19.5 W/sq ft | 21.4 W/sq ft |
| Cell Type | PERC Mono | PERC Mono |
| Bifacial | No | Yes |
| Weight | 21.8 kg | 23 kg |
| Temp Coefficient | -0.34%/°C | -0.34%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 15 years | 12 years |
| Performance Warranty | 25 years | 25 years |
| Degradation (Year 1) | 1.5% | 1.5% |
| Annual Degradation | 0.5% | 0.5% |
| Country | China | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: TieBoth panels achieve 21.3% module efficiency, producing identical power per square meter. Neither has an advantage in space-constrained installations.
2. Hot Climate Performance
Winner: TieBoth panels share a temperature coefficient of -0.34%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: Trina Solar Vertex S 420WTrina Solar Vertex S 420W leads with a 15-year product warranty versus 12 years. After 25 years, expect 86.5% vs 86.5% of original output for Trina Solar Vertex S 420W and Astronergy ASTRO N5 460W respectively.
4. Power Output
Winner: Astronergy ASTRO N5 460WThe Astronergy ASTRO N5 460W delivers 460W versus 420W per panel — 40W more. For an 8 kW system, you need 18 panels with the higher-wattage option versus 20 panels, saving 2 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieBoth panels use PERC Mono cell technology. No technology advantage for either product.
Trina Solar Vertex S 420W
The Vertex S (DE09R.08) is a proven PERC residential panel offering 420W with 144 half-cut cells in a compact form factor with reliable Trina Solar quality.
Pros
- + Proven PERC reliability
- + Competitive pricing
- + 144 half-cut cells for shade tolerance
- + Widely available
Cons
- - Lower efficiency than N-type
- - Higher degradation
- - PERC technology limitations
Astronergy ASTRO N5 460W
The ASTRO N5 is a mid-range PERC panel delivering 460W for residential and commercial installations at a value price point.
Pros
- + Good value per watt
- + Mid-size format
- + CHINT Group backing
- + Widely available globally
Cons
- - Older PERC technology
- - Standard efficiency
- - Less known in US
Choose Trina Solar Vertex S 420W If...
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 15+ years
- ✓ Cost-effective residential installations with proven technology.
Choose Astronergy ASTRO N5 460W If...
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ Value-oriented projects seeking competitive PERC pricing from a global manufacturer.
Our Recommendation
We recommend the Trina Solar Vertex S 420W for most buyers in this comparison. It wins 1 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The Astronergy ASTRO N5 460W remains a good product, but the Trina Solar Vertex S 420W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Trina Solar Vertex S 420W or Astronergy ASTRO N5 460W?
The Trina Solar Vertex S 420W wins this comparison by a clear margin. It offers better long-term durability with 15-year warranty. For most residential installations, the Trina Solar Vertex S 420W is the stronger choice.
Which panel is more efficient, Trina Solar Vertex S 420W or Astronergy ASTRO N5 460W?
The both panels share 21.3% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.0 percentage points translates to approximately 40W per panel under standard test conditions.
Which has a better warranty, Trina Solar Vertex S 420W or Astronergy ASTRO N5 460W?
The Trina Solar Vertex S 420W comes with a 15-year product warranty and 25-year performance guarantee. The Astronergy ASTRO N5 460W offers 12-year product and 25-year performance warranties. Trina Solar Vertex S 420W provides 3 additional years of product coverage.
Which panel performs better in hot weather?
The Trina Solar Vertex S 420W has a temperature coefficient of -0.34%/°C and the Astronergy ASTRO N5 460W is -0.34%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Trina Solar Vertex S 420W vs Astronergy ASTRO N5 460W panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Trina Solar Vertex S 420W panels (420W each) or 18 Astronergy ASTRO N5 460W panels (460W each). The Astronergy ASTRO N5 460W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026