--- title: "Longi Solar LR5-72HTH-575M vs Longi Solar LR5-72HTH-580M - Solar Panel Comparison | ComparePV" description: "Compare Longi Solar LR5-72HTH-575M vs Longi Solar LR5-72HTH-580M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr5-72hth-580m" image: "https://comparepv.com/og/compare/panels/longi-lr5-72hth-575m/longi-lr5-72hth-580m.png" updated: 2026-09-11 --- # Longi Solar LR5-72HTH-575M vs Longi Solar LR5-72HTH-580M 580M leads on the differences that matter The largest is module efficiency: 0.20 pp more efficient. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Longi Solar LR5-72HTH-575M](https://comparepv.com/panel/longi-lr5-72hth-575m) | [Longi Solar LR5-72HTH-580M](https://comparepv.com/panel/longi-lr5-72hth-580m) | | Manufacturer | Longi Solar | Longi Solar | | Power | 575 Wp | 580 Wp | | Efficiency | 22.30 % | 22.50 % | | Technology | | | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 575M | 580M | Difference | | --- | --- | --- | --- | | Module efficiency | 22.30 % | 22.50 % | +0.20 pp for 580M | ## Every compared parameter | Parameter | 575M | 580M | | --- | --- | --- | | Rated power | 575 Wp | 580 Wp | | Module efficiency | 22.30 % | 22.50 % | | Power density | 222.6 Wp/m² | 224.5 Wp/m² | | Open-circuit voltage | 52.06 V | 52.21 V | | Voltage at max power | 43.91 V | 44.06 V | | Short-circuit current | 14.14 A | 14.20 A | | Current at max power | 13.10 A | 13.17 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2278x1134x30 mm | 2278x1134x30 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 27.2 kg | 27.2 kg | | Weight per kWp | 47.3 kg/kWp | 46.9 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 25 yrs | 25 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | - | - | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | No | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, 575M:** 19,189 kWh - **Cumulative output, 580M:** 19,356 kWh - **Gap:** 167 kWh ## Output when hot | Condition | Cell temperature | 575M | 580M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 575 W | 580 W | 100.0% of rated power | | Cool, bright day | 40 °C | 550 W | 555 W | 95.7% of rated power | | Typical summer roof | 55 °C | 525 W | 530 W | 91.3% of rated power | | Hot roof | 70 °C | 500 W | 504 W | 87.0% of rated power | ## Against the whole database | Measure | 575M | 580M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #5,161 | #4,281 | 14,129 | 580M leads by 880 places | | Power density | #5,612 | #4,607 | 14,129 | 580M leads by 1,005 places | | Heat behaviour | #2,220 | #2,220 | 14,129 | Tied - the same position in the database | | Weight | #1,627 | #1,393 | 14,129 | 580M leads by 234 places | | Warranty | #9,912 | #9,912 | 14,129 | Tied - the same position in the database | | Overall | #5,221 | #4,852 | 14,129 | 580M leads by 369 places | ## Questions ### Which panel is better: Longi Solar LR5-72HTH-575M or Longi Solar LR5-72HTH-580M? According to our database: **Longi Solar LR5-72HTH-580M** has higher module efficiency (**22.50%** vs **22.30%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Longi Solar LR5-72HTH-575M and Longi Solar LR5-72HTH-580M? **Longi Solar LR5-72HTH-575M** has a module efficiency of **22.30%**, while **Longi Solar LR5-72HTH-580M** is **22.50%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Longi Solar LR5-72HTH-575M use vs Longi Solar LR5-72HTH-580M? **Longi Solar LR5-72HTH-575M** uses Monocrystalline cells; **Longi Solar LR5-72HTH-580M** uses Monocrystalline. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Longi Solar LR5-72HTH-575M and Longi Solar LR5-72HTH-580M? **Longi Solar LR5-72HTH-575M** has a **25 years** power warranty; **Longi Solar LR5-72HTH-580M** has a **25 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ## Related comparisons - [Longi Solar LR5-72HTH-575M vs Longi Solar LR5-72HTH-585M](https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr5-72hth-585m) - 3 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-575M vs Longi Solar LR5-72HTH-570M](https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr5-72hth-570m) - One difference: module efficiency - [Longi Solar LR5-72HTH-575M vs Longi Solar LR5-72HTH-565M](https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr5-72hth-565m) - 3 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-575M vs Longi Solar LR7-72HVHF-670M](https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr7-72hvhf-670m) - 14 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-575M vs Longi Solar LR8-66HYD-670M](https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr8-66hyd-670m) - 16 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-575M vs Longi Solar LR7-72HVH-670M](https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr7-72hvh-670m) - 14 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/longi-lr5-72hth-575m/longi-lr5-72hth-580m Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.