--- title: "Longi Solar LR5-54HTH-425M vs Longi Solar LR5-72HTD-585M - Solar Panel Comparison | ComparePV" description: "Compare Longi Solar LR5-54HTH-425M vs Longi Solar LR5-72HTD-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-lr5-54hth-425m/longi-lr5-72htd-585m" image: "https://comparepv.com/og/compare/panels/longi-lr5-54hth-425m/longi-lr5-72htd-585m.png" updated: 2026-09-11 --- # Longi Solar LR5-54HTH-425M vs Longi Solar LR5-72HTD-585M 72HTD-585M leads on the differences that matter The largest is module efficiency: 0.80 pp more efficient. 5 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 LR5-54HTH-425M](https://comparepv.com/panel/longi-lr5-54hth-425m) | [Longi Solar LR5-72HTD-585M](https://comparepv.com/panel/longi-lr5-72htd-585m) | | Manufacturer | Longi Solar | Longi Solar | | Power | 425 Wp | 585 Wp | | Efficiency | 21.80 % | 22.60 % | | Technology | | | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 54HTH-425M | 72HTD-585M | Difference | | --- | --- | --- | --- | | Module efficiency | 21.80 % | 22.60 % | +0.80 pp for 72HTD-585M | | Rated power | 425 Wp | 585 Wp | +160 W for 72HTD-585M | | Performance warranty | 25 yrs | 30 yrs | +5 yrs for 72HTD-585M | | Weight | 20.8 kg | 31.8 kg | -11.0 kg for 54HTH-425M | | Power density | 217.6 Wp/m² | 226.5 Wp/m² | +8.8 Wp/m² for 72HTD-585M | | Weight per kWp | 48.9 kg/kWp | 54.4 kg/kWp | -5.4 kg/kWp for 54HTH-425M | | Open-circuit voltage | 38.93 V | 52.45 V | 13.52 V apart | | Module area | 1.953 m² | 2.583 m² | 0.631 m² apart | | Temperature coefficient | -0.290 %/°C | -0.280 %/°C | +0.010 %/°C for 72HTD-585M | | Voltage at max power | 32.64 V | 44.00 V | 11.36 V apart | | Cell count | 108 | 144 | 36 cells apart | | Bifacial | No | Yes | No vs Yes | | Dimensions | 1722x1134x30 mm | 2278x1134x30 mm | 1722x1134x30 mm vs 2278x1134x30 mm | ## Every compared parameter | Parameter | 54HTH-425M | 72HTD-585M | | --- | --- | --- | | Rated power | 425 Wp | 585 Wp | | Module efficiency | 21.80 % | 22.60 % | | Power density | 217.6 Wp/m² | 226.5 Wp/m² | | Open-circuit voltage | 38.93 V | 52.45 V | | Voltage at max power | 32.64 V | 44.00 V | | Short-circuit current | 14.07 A | 14.19 A | | Current at max power | 13.03 A | 13.30 A | | Temperature coefficient | -0.290 %/°C | -0.280 %/°C | | Dimensions | 1722x1134x30 mm | 2278x1134x30 mm | | Module area | 1.953 m² | 2.583 m² | | Weight | 20.8 kg | 31.8 kg | | Weight per kWp | 48.9 kg/kWp | 54.4 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 25 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | - | - | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 144 | | Bifacial | No | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, 54HTH-425M:** 14,183 kWh - **Cumulative output, 72HTD-585M:** 19,523 kWh - **Gap:** 5,340 kWh ## Output when hot | Condition | Cell temperature | 54HTH-425M | 72HTD-585M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 425 W | 585 W | 100.0% of rated power | | Cool, bright day | 40 °C | 407 W | 560 W | 95.7% of rated power | | Typical summer roof | 55 °C | 388 W | 536 W | 91.3% of rated power | | Hot roof | 70 °C | 370 W | 511 W | 87.0% of rated power | ## Against the whole database | Measure | 54HTH-425M | 72HTD-585M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #7,085 | #3,716 | 14,129 | 72HTD-585M leads by 3,369 places | | Power density | #7,235 | #3,557 | 14,129 | 72HTD-585M leads by 3,678 places | | Heat behaviour | #2,220 | #1,347 | 14,129 | 72HTD-585M leads by 873 places | | Weight | #2,630 | #8,749 | 14,129 | 54HTH-425M leads by 6,119 places | | Warranty | #9,912 | #21 | 14,129 | 72HTD-585M leads by 9,891 places | | Overall | #10,559 | #3,633 | 14,129 | 72HTD-585M leads by 6,926 places | ## Questions ### Which panel is better: Longi Solar LR5-54HTH-425M or Longi Solar LR5-72HTD-585M? According to our database: **Longi Solar LR5-72HTD-585M** has higher module efficiency (**22.60%** vs **21.80%**); **Longi Solar LR5-72HTD-585M** 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 LR5-54HTH-425M and Longi Solar LR5-72HTD-585M? **Longi Solar LR5-54HTH-425M** has a module efficiency of **21.80%**, while **Longi Solar LR5-72HTD-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 LR5-54HTH-425M use vs Longi Solar LR5-72HTD-585M? **Longi Solar LR5-54HTH-425M** uses Monocrystalline cells; **Longi Solar LR5-72HTD-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 LR5-54HTH-425M and Longi Solar LR5-72HTD-585M? **Longi Solar LR5-54HTH-425M** has a **25 years** power warranty; **Longi Solar LR5-72HTD-585M** has a **30 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 LR5-54HTH-425M and Longi Solar LR5-72HTD-585M bifacial panels? **Longi Solar LR5-72HTD-585M** is bifacial (captures light from both faces); **Longi Solar LR5-54HTH-425M** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Longi Solar LR5-54HTH-425M vs Longi Solar LR7-72HTH-615M](https://comparepv.com/compare/longi-lr5-54hth-425m/longi-lr7-72hth-615m) - 13 differences, the largest is module efficiency - [Longi Solar LR5-54HTH-425M vs Longi Solar LR7-72HTH-610M](https://comparepv.com/compare/longi-lr5-54hth-425m/longi-lr7-72hth-610m) - 13 differences, the largest is module efficiency - [Longi Solar LR5-54HTH-425M vs Longi Solar LR7-72HTH-605M](https://comparepv.com/compare/longi-lr5-54hth-425m/longi-lr7-72hth-605m) - 12 differences, the largest is rated power - [Longi Solar LR5-54HTH-425M vs Longi Solar LR5-72HTH-585M](https://comparepv.com/compare/longi-lr5-54hth-425m/longi-lr5-72hth-585m) - 10 differences, the largest is module efficiency - [Longi Solar LR5-54HTH-425M vs Longi Solar LR5-72HTD-580M](https://comparepv.com/compare/longi-lr5-54hth-425m/longi-lr5-72htd-580m) - 13 differences, the largest is module efficiency - [Longi Solar LR5-54HTH-425M vs Longi Solar LR5-72HTH-580M](https://comparepv.com/compare/longi-lr5-54hth-425m/longi-lr5-72hth-580m) - 10 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/longi-lr5-54hth-425m/longi-lr5-72htd-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.