--- title: "Longi Solar LR5-72HTD-580M vs Longi Solar LR5-72HTH-585M - Solar Panel Comparison | ComparePV" description: "Compare Longi Solar LR5-72HTD-580M vs Longi Solar LR5-72HTH-585M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr5-72hth-585m" image: "https://comparepv.com/og/compare/panels/longi-lr5-72htd-580m/longi-lr5-72hth-585m.png" updated: 2026-09-11 --- # Longi Solar LR5-72HTD-580M vs Longi Solar LR5-72HTH-585M 5 differences, and they point both ways The largest is performance warranty: 5 yrs longer. 13 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 LR5-72HTD-580M](https://comparepv.com/panel/longi-lr5-72htd-580m) | [Longi Solar LR5-72HTH-585M](https://comparepv.com/panel/longi-lr5-72hth-585m) | | Manufacturer | Longi Solar | Longi Solar | | Power | 580 Wp | 585 Wp | | Efficiency | 22.50 % | 22.60 % | | Technology | | | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 72HTD-580M | 72HTH-585M | Difference | | --- | --- | --- | --- | | Performance warranty | 30 yrs | 25 yrs | +5 yrs for 72HTD-580M | | Weight | 31.8 kg | 27.2 kg | -4.6 kg for 72HTH-585M | | Weight per kWp | 54.8 kg/kWp | 46.5 kg/kWp | -8.3 kg/kWp for 72HTH-585M | | Temperature coefficient | -0.280 %/°C | -0.290 %/°C | +0.010 %/°C for 72HTD-580M | | Bifacial | Yes | No | Yes vs No | ## Every compared parameter | Parameter | 72HTD-580M | 72HTH-585M | | --- | --- | --- | | Rated power | 580 Wp | 585 Wp | | Module efficiency | 22.50 % | 22.60 % | | Power density | 224.5 Wp/m² | 226.5 Wp/m² | | Open-circuit voltage | 52.30 V | 52.36 V | | Voltage at max power | 43.85 V | 44.21 V | | Short-circuit current | 14.13 A | 14.27 A | | Current at max power | 13.23 A | 13.24 A | | Temperature coefficient | -0.280 %/°C | -0.290 %/°C | | Dimensions | 2278x1134x30 mm | 2278x1134x30 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 31.8 kg | 27.2 kg | | Weight per kWp | 54.8 kg/kWp | 46.5 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 25 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | - | - | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | Yes | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, 72HTD-580M:** 19,356 kWh - **Cumulative output, 72HTH-585M:** 19,523 kWh - **Gap:** 167 kWh ## Output when hot | Condition | Cell temperature | 72HTD-580M | 72HTH-585M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 580 W | 585 W | 100.0% of rated power | | Cool, bright day | 40 °C | 556 W | 560 W | 95.7% of rated power | | Typical summer roof | 55 °C | 531 W | 534 W | 91.3% of rated power | | Hot roof | 70 °C | 507 W | 509 W | 87.0% of rated power | ## Against the whole database | Measure | 72HTD-580M | 72HTH-585M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,281 | #3,716 | 14,129 | 72HTH-585M leads by 565 places | | Power density | #4,607 | #3,557 | 14,129 | 72HTH-585M leads by 1,050 places | | Heat behaviour | #1,347 | #2,220 | 14,129 | 72HTD-580M leads by 873 places | | Weight | #9,304 | #1,186 | 14,129 | 72HTH-585M leads by 8,118 places | | Warranty | #21 | #9,912 | 14,129 | 72HTD-580M leads by 9,891 places | | Overall | #3,946 | #4,515 | 14,129 | 72HTD-580M leads by 569 places | ## Questions ### Which panel is better: Longi Solar LR5-72HTD-580M or Longi Solar LR5-72HTH-585M? According to our database: **Longi Solar LR5-72HTH-585M** has higher module efficiency (**22.60%** vs **22.50%**); **Longi Solar LR5-72HTD-580M** tolerates heat better (temp coeff **-0.280%/°C** vs **-0.290%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Longi Solar LR5-72HTD-580M and Longi Solar LR5-72HTH-585M? **Longi Solar LR5-72HTD-580M** has a module efficiency of **22.50%**, while **Longi Solar LR5-72HTH-585M** is **22.60%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Longi Solar LR5-72HTD-580M use vs Longi Solar LR5-72HTH-585M? **Longi Solar LR5-72HTD-580M** uses Monocrystalline cells; **Longi Solar LR5-72HTH-585M** 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 LR5-72HTD-580M and Longi Solar LR5-72HTH-585M? **Longi Solar LR5-72HTD-580M** has a **30 years** power warranty; **Longi Solar LR5-72HTH-585M** 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. ### Are Longi Solar LR5-72HTD-580M and Longi Solar LR5-72HTH-585M bifacial panels? **Longi Solar LR5-72HTD-580M** is bifacial (captures light from both faces); **Longi Solar LR5-72HTH-585M** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Longi Solar LR5-72HTD-580M vs Longi Solar LR7-72HTH-615M](https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr7-72hth-615m) - 11 differences, the largest is performance warranty - [Longi Solar LR5-72HTD-580M vs Longi Solar LR7-72HTH-610M](https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr7-72hth-610m) - 9 differences, the largest is performance warranty - [Longi Solar LR5-72HTD-580M vs Longi Solar LR7-72HTH-605M](https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr7-72hth-605m) - 9 differences, the largest is performance warranty - [Longi Solar LR5-72HTD-580M vs Longi Solar LR5-72HTD-585M](https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr5-72htd-585m) - The same specification on paper - [Longi Solar LR5-72HTD-580M vs Longi Solar LR5-72HTH-580M](https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr5-72hth-580m) - 5 differences, the largest is performance warranty - [Longi Solar LR5-72HTD-580M vs Longi Solar LR5-72HTD-575M](https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr5-72htd-575m) - One difference: module efficiency --- Source: https://comparepv.com/compare/longi-lr5-72htd-580m/longi-lr5-72hth-585m 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.