--- title: "Longi Solar LR5-66HPH-510M vs Longi Solar LR5-72HPH-560M - Solar Panel Comparison | ComparePV" description: "Compare Longi Solar LR5-66HPH-510M vs Longi Solar LR5-72HPH-560M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-lr5-72hph-560m" updated: 2026-09-11 --- # Longi Solar LR5-66HPH-510M vs Longi Solar LR5-72HPH-560M 72HPH-560M leads on the differences that matter The largest is rated power: 50 W more power. 10 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 LR5-66HPH-510M](https://comparepv.com/panel/longi-green-energy-technology-co-ltd-lr5-66hph-510m) | [Longi Solar LR5-72HPH-560M](https://comparepv.com/panel/longi-lr5-72hph-560m) | | Manufacturer | Longi Solar | Longi Solar | | Power | 510 Wp | 560 Wp | | Efficiency | 21.50 % | 21.70 % | | Technology | | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 66HPH-510M | 72HPH-560M | Difference | | --- | --- | --- | --- | | Rated power | 510 Wp | 560 Wp | +50 W for 72HPH-560M | | Open-circuit voltage | 45.85 V | 50.10 V | 4.25 V apart | | Module area | 2.373 m² | 2.583 m² | 0.210 m² apart | | Weight | 25.3 kg | 27.5 kg | -2.2 kg for 66HPH-510M | | Module efficiency | 21.50 % | 21.70 % | +0.20 pp for 72HPH-560M | | Cell count | 132 | 144 | 12 cells apart | | Voltage at max power | 38.68 V | 42.25 V | 3.57 V apart | | Dimensions | 2093x1134x35 mm | 2278x1134x35 mm | 2093x1134x35 mm vs 2278x1134x35 mm | ## Every compared parameter | Parameter | 66HPH-510M | 72HPH-560M | | --- | --- | --- | | Rated power | 510 Wp | 560 Wp | | Module efficiency | 21.50 % | 21.70 % | | Power density | 214.9 Wp/m² | 216.8 Wp/m² | | Open-circuit voltage | 45.85 V | 50.10 V | | Voltage at max power | 38.68 V | 42.25 V | | Short-circuit current | 14.05 A | 14.10 A | | Current at max power | 13.19 A | 13.26 A | | Temperature coefficient | -0.340 %/°C | -0.340 %/°C | | Dimensions | 2093x1134x35 mm | 2278x1134x35 mm | | Module area | 2.373 m² | 2.583 m² | | Weight | 25.3 kg | 27.5 kg | | Weight per kWp | 49.6 kg/kWp | 49.1 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 25 yrs | 25 yrs | | Annual degradation | 0.55 %/yr | 0.55 %/yr | | Cell technology | - | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 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 (-0.340 %/°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, 66HPH-510M:** 16,529 kWh - **Cumulative output, 72HPH-560M:** 18,149 kWh - **Gap:** 1,620 kWh ## Output when hot | Condition | Cell temperature | 66HPH-510M | 72HPH-560M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 510 W | 560 W | 100.0% of rated power | | Cool, bright day | 40 °C | 484 W | 531 W | 94.9% of rated power | | Typical summer roof | 55 °C | 458 W | 503 W | 89.8% of rated power | | Hot roof | 70 °C | 432 W | 474 W | 84.7% of rated power | ## Against the whole database | Measure | 66HPH-510M | 72HPH-560M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #7,958 | #7,421 | 14,005 | 72HPH-560M leads by 537 places | | Power density | #8,033 | #7,452 | 14,005 | 72HPH-560M leads by 581 places | | Heat behaviour | #8,778 | #8,778 | 14,005 | Tied - the same position in the database | | Weight | #3,154 | #2,748 | 14,005 | 72HPH-560M leads by 406 places | | Warranty | #9,798 | #9,798 | 14,005 | Tied - the same position in the database | | Overall | #9,133 | #7,083 | 14,005 | 72HPH-560M leads by 2,050 places | ## Questions ### Which panel is better: Longi Solar LR5-66HPH-510M or Longi Solar LR5-72HPH-560M? According to our database: **Longi Solar LR5-72HPH-560M** has higher module efficiency (**21.70%** vs **21.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Longi Solar LR5-66HPH-510M and Longi Solar LR5-72HPH-560M? **Longi Solar LR5-66HPH-510M** has a module efficiency of **21.50%**, while **Longi Solar LR5-72HPH-560M** is **21.70%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Longi Solar LR5-66HPH-510M use vs Longi Solar LR5-72HPH-560M? **Longi Solar LR5-66HPH-510M** uses Monocrystalline cells; **Longi Solar LR5-72HPH-560M** uses **PERC**. 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 LR5-66HPH-510M and Longi Solar LR5-72HPH-560M? **Longi Solar LR5-66HPH-510M** has a **25 years** power warranty; **Longi Solar LR5-72HPH-560M** 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 LR5-66HPH-510M vs Longi Solar LR5-72HPH-565M](https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-lr5-72hph-565m) - 9 differences, the largest is rated power - [Longi Solar LR5-66HPH-510M vs Longi Solar LR5-72HPH-555M](https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-lr5-72hph-555m) - 7 differences, the largest is rated power - [Longi Solar LR5-66HPH-510M vs Longi Solar LR5-72HPH-550M](https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-lr5-72hph-550m) - 8 differences, the largest is rated power - [Longi Solar LR5-66HPH-510M vs Longi Solar LR5-72HPH-545M](https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-lr5-72hph-545m) - 9 differences, the largest is rated power - [Longi Solar LR5-66HPH-510M vs Longi Solar LR5-66HPH-515M](https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-green-energy-technology-co-ltd-lr5-66hph-515m) - One difference: module efficiency - [Longi Solar LR5-66HPH-510M vs Longi Solar LR5-54HPH-425M](https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-lr5-54hph-425m) - 8 differences, the largest is rated power --- Source: https://comparepv.com/compare/longi-green-energy-technology-co-ltd-lr5-66hph-510m/longi-lr5-72hph-560m 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.