Trina Solar Vertex N 590W vs Tongwei THN-EP08M10 580W
The Trina Solar Vertex N 590W wins this comparison by a clear margin. It delivers more power (590W vs 580W). For most residential installations, the Trina Solar Vertex N 590W is the stronger choice.
Key Differences
- • Trina Solar Vertex N 590W is rated at 590W while Tongwei THN-EP08M10 580W is rated at 580W, a 10W difference.
- • Both achieve identical 22.5% module efficiency.
- • Trina Solar Vertex N 590W comes with a 15-year product warranty vs 12 years for the other.
Specifications Breakdown
Module Efficiency
Both the Trina Solar Vertex N 590W and Tongwei THN-EP08M10 580W share identical 22.5% module efficiency, producing comparable power per unit area. The Trina Solar Vertex N 590W generates 228.4 W/m² while the Tongwei THN-EP08M10 580W generates 224.5 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 Trina Solar Vertex N 590W delivers 590W per panel versus 580W for the Tongwei THN-EP08M10 580W, a 10W difference per module. To build an 8 kW residential system, you would need 14 Trina Solar Vertex N 590W panels or 14 Tongwei THN-EP08M10 580W panels. Despite the per-panel wattage difference, both require the same number of panels for this system size due to rounding. 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 -0.29%/°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 94.2% 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 N 590W is backed by a 15-year product warranty and 30-year performance guarantee, while the Tongwei THN-EP08M10 580W offers 12-year product and 25-year performance coverage. The Trina Solar Vertex N 590W provides 3 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1% first year then 0.4%/year for Trina Solar Vertex N 590W; 1% first year then 0.4%/year for Tongwei THN-EP08M10 580W), after 25 years the Trina Solar Vertex N 590W should retain approximately 89.4% of original output versus 89.4% for the Tongwei THN-EP08M10 580W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Trina Solar Vertex N 590W measures 2278×1134×35mm and weighs 29 kg, while the Tongwei THN-EP08M10 580W measures 2278×1134×35mm at 28.5 kg. 2.58 m² of panel area for the Trina Solar Vertex N 590W versus 2.58 m² for the Tongwei THN-EP08M10 580W. 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 N 590W | Tongwei THN-EP08M10 580W |
|---|---|---|
| Power | 590W | 580W |
| Efficiency | 22.5% | 22.5% |
| Power Density | 21.2 W/sq ft | 20.9 W/sq ft |
| Cell Type | TOPCon N-type | TOPCon N-type |
| Bifacial | Yes | No |
| Weight | 29 kg | 28.5 kg |
| Temp Coefficient | -0.29%/°C | -0.29%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 15 years | 12 years |
| Performance Warranty | 30 years | 25 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.4% | 0.4% |
| Country | China | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: TieBoth panels achieve 22.5% 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 -0.29%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: Trina Solar Vertex N 590WTrina Solar Vertex N 590W leads with a 15-year product warranty versus 12 years. After 25 years, expect 89.4% vs 89.4% of original output for Trina Solar Vertex N 590W and Tongwei THN-EP08M10 580W respectively.
4. Power Output
Winner: Trina Solar Vertex N 590WThe Trina Solar Vertex N 590W delivers 590W versus 580W per panel — 10W more. For an 8 kW system, you need 14 panels with the higher-wattage option versus 14 panels, saving 0 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieBoth panels use TOPCon N-type cell technology. No technology advantage for either product.
Trina Solar Vertex N 590W
The Vertex N is Trina Solar's high-output N-type module delivering 590W for large residential and commercial installations.
Pros
- + High 590W output
- + Excellent bifaciality
- + Low LCOE
- + Bankable brand
Cons
- - Large and heavy panel
- - Requires robust mounting
- - Not ideal for small roofs
Tongwei THN-EP08M10 580W
Tongwei THN-EP08M10 is a high-output N-type TOPCon panel from one of the world's largest solar cell manufacturers.
Pros
- + Top cell manufacturer
- + High 580W output
- + Competitive pricing
- + Strong R&D backing
Cons
- - Limited brand recognition outside China
- - Standard warranty
- - Newer to module market
Choose Trina Solar Vertex N 590W If...
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 15+ years
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Large residential or commercial rooftop systems.
Choose Tongwei THN-EP08M10 580W If...
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Large installations seeking competitive N-type pricing from a cell technology leader.
Our Recommendation
We recommend the Trina Solar Vertex N 590W for most buyers in this comparison. It wins 2 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The Tongwei THN-EP08M10 580W remains a good product, but the Trina Solar Vertex N 590W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Trina Solar Vertex N 590W or Tongwei THN-EP08M10 580W?
The Trina Solar Vertex N 590W wins this comparison by a clear margin. It delivers more power (590W vs 580W). For most residential installations, the Trina Solar Vertex N 590W is the stronger choice.
Which panel is more efficient, Trina Solar Vertex N 590W or Tongwei THN-EP08M10 580W?
The both panels share 22.5% 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 10W per panel under standard test conditions.
Which has a better warranty, Trina Solar Vertex N 590W or Tongwei THN-EP08M10 580W?
The Trina Solar Vertex N 590W comes with a 15-year product warranty and 30-year performance guarantee. The Tongwei THN-EP08M10 580W offers 12-year product and 25-year performance warranties. Trina Solar Vertex N 590W provides 3 additional years of product coverage.
Which panel performs better in hot weather?
The Trina Solar Vertex N 590W has a temperature coefficient of -0.29%/°C and the Tongwei THN-EP08M10 580W is -0.29%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Trina Solar Vertex N 590W vs Tongwei THN-EP08M10 580W panels do I need for an 8 kW system?
For an 8 kW system: you need 14 Trina Solar Vertex N 590W panels (590W each) or 14 Tongwei THN-EP08M10 580W panels (580W each). The Trina Solar Vertex N 590W requires fewer panels, saving on racking hardware and installation labor.
Related Resources
Last updated: February 2026