Astronergy ASTRO N7 580W vs LONGi Hi-MO X6 Max 470W
The Astronergy ASTRO N7 580W wins this comparison by a clear margin. It leads in efficiency (22.4% vs 22.3%) and matches or exceeds on warranty (15 vs 15 years). For most residential installations, the Astronergy ASTRO N7 580W is the stronger choice.
Key Differences
- • Astronergy ASTRO N7 580W is rated at 580W while LONGi Hi-MO X6 Max 470W is rated at 470W, a 110W difference.
- • Astronergy ASTRO N7 580W achieves 22.4% efficiency vs 22.3% for the other, a 0.1 percentage point gap.
- • Both carry matching 15-year product warranties.
Specifications Breakdown
Module Efficiency
The Astronergy ASTRO N7 580W achieves 22.4% module efficiency compared to LONGi Hi-MO X6 Max 470W's 22.3%, meaning Astronergy ASTRO N7 580W converts 0.1 percentage points more sunlight into electricity per square meter. In practical terms, the Astronergy ASTRO N7 580W produces 224.5 watts per square meter of panel area while the LONGi Hi-MO X6 Max 470W produces 235.2 W/m². For rooftop installations where space is limited, this efficiency gap determines how many kilowatts you can fit on your available roof area. Over a 25-year system life, even a small efficiency advantage compounds into meaningful additional energy production.
Power Output
The Astronergy ASTRO N7 580W delivers 580W per panel versus 470W for the LONGi Hi-MO X6 Max 470W, a 110W difference per module. To build an 8 kW residential system, you would need 14 Astronergy ASTRO N7 580W panels or 18 LONGi Hi-MO X6 Max 470W panels. Choosing the higher-wattage option saves 4 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 -0.29%/°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 Astronergy ASTRO N7 580W is backed by a 15-year product warranty and 30-year performance guarantee, while the LONGi Hi-MO X6 Max 470W offers 15-year product and 30-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (1% first year then 0.4%/year for Astronergy ASTRO N7 580W; 1% first year then 0.4%/year for LONGi Hi-MO X6 Max 470W), after 25 years the Astronergy ASTRO N7 580W should retain approximately 89.4% of original output versus 89.4% for the LONGi Hi-MO X6 Max 470W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Astronergy ASTRO N7 580W measures 2278×1134×35mm and weighs 28.5 kg, while the LONGi Hi-MO X6 Max 470W measures 1762×1134×30mm at 23.5 kg. 2.58 m² of panel area for the Astronergy ASTRO N7 580W versus 2.00 m² for the LONGi Hi-MO X6 Max 470W. The LONGi Hi-MO X6 Max 470W is 5.0 kg lighter per panel, which reduces structural load requirements on the roof and makes handling easier during installation. For a 20-panel system, that is a total weight difference of 100 kg. The more compact LONGi Hi-MO X6 Max 470W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Astronergy ASTRO N7 580W | LONGi Hi-MO X6 Max 470W |
|---|---|---|
| Power | 580W | 470W |
| Efficiency | 22.4% | 22.3% |
| Power Density | 20.9 W/sq ft | 21.9 W/sq ft |
| Cell Type | TOPCon N-type | TOPCon N-type |
| Bifacial | Yes | Yes |
| Weight | 28.5 kg | 23.5 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 | 15 years |
| Performance Warranty | 30 years | 30 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: Astronergy ASTRO N7 580WThe Astronergy ASTRO N7 580W achieves 22.4% efficiency versus 22.3% — a 0.1 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 3.3 kW more total system capacity, or 15 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: TieBoth panels share a temperature coefficient of -0.29%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: TieBoth panels offer identical 15-year product warranties and 0.4% annual degradation. Neither has a durability advantage.
4. Power Output
Winner: Astronergy ASTRO N7 580WThe Astronergy ASTRO N7 580W delivers 580W versus 470W per panel — 110W more. For an 8 kW system, you need 14 panels with the higher-wattage option versus 18 panels, saving 4 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.
Astronergy ASTRO N7 580W
Astronergy ASTRO N7 delivers 580W with TOPCon N-type technology, backed by CHINT Group's manufacturing scale and reliability.
Pros
- + High 580W output
- + N-type TOPCon efficiency
- + Strong manufacturing backing
- + Competitive pricing
Cons
- - Less known brand in US
- - Limited installer network
- - Large form factor
LONGi Hi-MO X6 Max 470W
The Hi-MO X6 Max delivers 470W in a mid-size format with N-type TOPCon technology, bridging the gap between compact and large panels.
Pros
- + Mid-size versatility
- + N-type TOPCon efficiency
- + Good power-to-size ratio
- + LONGi reliability
Cons
- - Mid-range pricing
- - Not the highest output
- - Standard warranty
Choose Astronergy ASTRO N7 580W If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Large residential and commercial systems seeking competitive N-type pricing.
Choose LONGi Hi-MO X6 Max 470W If...
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Medium-sized residential roofs wanting a balance of size and N-type performance.
Our Recommendation
We recommend the Astronergy ASTRO N7 580W 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 LONGi Hi-MO X6 Max 470W remains a good product, but the Astronergy ASTRO N7 580W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Astronergy ASTRO N7 580W or LONGi Hi-MO X6 Max 470W?
The Astronergy ASTRO N7 580W wins this comparison by a clear margin. It leads in efficiency (22.4% vs 22.3%) and matches or exceeds on warranty (15 vs 15 years). For most residential installations, the Astronergy ASTRO N7 580W is the stronger choice.
Which panel is more efficient, Astronergy ASTRO N7 580W or LONGi Hi-MO X6 Max 470W?
The Astronergy ASTRO N7 580W at 22.4% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.1 percentage points translates to approximately 110W per panel under standard test conditions.
Which has a better warranty, Astronergy ASTRO N7 580W or LONGi Hi-MO X6 Max 470W?
The Astronergy ASTRO N7 580W comes with a 15-year product warranty and 30-year performance guarantee. The LONGi Hi-MO X6 Max 470W offers 15-year product and 30-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Astronergy ASTRO N7 580W has a temperature coefficient of -0.29%/°C and the LONGi Hi-MO X6 Max 470W is -0.29%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Astronergy ASTRO N7 580W vs LONGi Hi-MO X6 Max 470W panels do I need for an 8 kW system?
For an 8 kW system: you need 14 Astronergy ASTRO N7 580W panels (580W each) or 18 LONGi Hi-MO X6 Max 470W panels (470W each). The Astronergy ASTRO N7 580W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026