--- title: "Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVHF-665M - Solar Panel Comparison | ComparePV" description: "Compare Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVHF-665M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr7-72hvhf-665m" updated: 2026-09-11 --- # Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVHF-665M LR7-72HVHF-665M leads on the differences that matter The largest is module efficiency: 1.80 pp more efficient. 4 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Longi Solar LR5-72HGD-590M](https://comparepv.com/panel/longi-lr5-72hgd-590m) | [Longi Solar LR7-72HVHF-665M](https://comparepv.com/panel/longi-lr7-72hvhf-665m) | | Manufacturer | Longi Solar | Longi Solar | | Power | 590 Wp | 665 Wp | | Efficiency | 22.80 % | 24.60 % | | Technology | N-type | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | LR5-72HGD-590M | LR7-72HVHF-665M | Difference | | --- | --- | --- | --- | | Module efficiency | 22.80 % | 24.60 % | +1.80 pp for LR7-72HVHF-665M | | Rated power | 590 Wp | 665 Wp | +75 W for LR7-72HVHF-665M | | Power density | 228.4 Wp/m² | 246.2 Wp/m² | +17.8 Wp/m² for LR7-72HVHF-665M | | Weight per kWp | 53.9 kg/kWp | 42.9 kg/kWp | -11.0 kg/kWp for LR7-72HVHF-665M | | Temperature coefficient | -0.280 %/°C | -0.260 %/°C | +0.020 %/°C for LR7-72HVHF-665M | | Weight | 31.8 kg | 28.5 kg | -3.3 kg for LR7-72HVHF-665M | | Product warranty | 12 yrs | 15 yrs | +3 yrs for LR7-72HVHF-665M | | Module area | 2.583 m² | 2.701 m² | 0.118 m² apart | | Open-circuit voltage | 51.63 V | 54.20 V | 2.57 V apart | | Short-circuit current | 14.38 A | 15.52 A | 1.14 A apart | | Annual degradation | 0.40 %/yr | 0.35 %/yr | -0.05 %/yr for LR7-72HVHF-665M | | Bifacial | Yes | No | Yes vs No | | Current at max power | 13.59 A | 14.83 A | 1.24 A apart | | Dimensions | 2278x1134x30 mm | 2382x1134x30 mm | 2278x1134x30 mm vs 2382x1134x30 mm | | Voltage at max power | 43.44 V | 44.86 V | 1.42 V apart | ## Every compared parameter | Parameter | LR5-72HGD-590M | LR7-72HVHF-665M | | --- | --- | --- | | Rated power | 590 Wp | 665 Wp | | Module efficiency | 22.80 % | 24.60 % | | Power density | 228.4 Wp/m² | 246.2 Wp/m² | | Open-circuit voltage | 51.63 V | 54.20 V | | Voltage at max power | 43.44 V | 44.86 V | | Short-circuit current | 14.38 A | 15.52 A | | Current at max power | 13.59 A | 14.83 A | | Temperature coefficient | -0.280 %/°C | -0.260 %/°C | | Dimensions | 2278x1134x30 mm | 2382x1134x30 mm | | Module area | 2.583 m² | 2.701 m² | | Weight | 31.8 kg | 28.5 kg | | Weight per kWp | 53.9 kg/kWp | 42.9 kg/kWp | | Product warranty | 12 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.35 %/yr | | Cell technology | N-type | N-type | | 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, LR5-72HGD-590M:** 19,796 kWh - **Cumulative output, LR7-72HVHF-665M:** 22,486 kWh - **Gap:** 2,690 kWh ## Output when hot | Condition | Cell temperature | LR5-72HGD-590M | LR7-72HVHF-665M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 590 W | 665 W | 100.0% of rated power | | Cool, bright day | 40 °C | 565 W | 639 W | 95.8% of rated power | | Typical summer roof | 55 °C | 540 W | 613 W | 91.6% of rated power | | Hot roof | 70 °C | 516 W | 587 W | 87.4% of rated power | ## Against the whole database | Measure | LR5-72HGD-590M | LR7-72HVHF-665M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,714 | #51 | 14,005 | LR7-72HVHF-665M leads by 2,663 places | | Power density | #2,598 | #42 | 14,005 | LR7-72HVHF-665M leads by 2,556 places | | Heat behaviour | #1,309 | #511 | 14,005 | LR7-72HVHF-665M leads by 798 places | | Weight | #8,021 | #244 | 14,005 | LR7-72HVHF-665M leads by 7,777 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #3,801 | #387 | 14,005 | LR7-72HVHF-665M leads by 3,414 places | ## Questions ### Which panel is better: Longi Solar LR5-72HGD-590M or Longi Solar LR7-72HVHF-665M? According to our database: **Longi Solar LR7-72HVHF-665M** has higher module efficiency (**24.60%** vs **22.80%**); **Longi Solar LR7-72HVHF-665M** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.280%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Longi Solar LR5-72HGD-590M and Longi Solar LR7-72HVHF-665M? **Longi Solar LR5-72HGD-590M** has a module efficiency of **22.80%**, while **Longi Solar LR7-72HVHF-665M** is **24.60%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Longi Solar LR5-72HGD-590M use vs Longi Solar LR7-72HVHF-665M? **Longi Solar LR5-72HGD-590M** uses **N-type** cells; **Longi Solar LR7-72HVHF-665M** uses **N-type**. 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 LR5-72HGD-590M and Longi Solar LR7-72HVHF-665M? **Longi Solar LR5-72HGD-590M** has a **30 years** power warranty; **Longi Solar LR7-72HVHF-665M** 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 LR5-72HGD-590M and Longi Solar LR7-72HVHF-665M bifacial panels? **Longi Solar LR5-72HGD-590M** is bifacial (captures light from both faces); **Longi Solar LR7-72HVHF-665M** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVHF-670M](https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr7-72hvhf-670m) - 15 differences, the largest is module efficiency - [Longi Solar LR5-72HGD-590M vs Longi Solar LR8-66HYD-670M](https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr8-66hyd-670m) - 14 differences, the largest is module efficiency - [Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVH-670M](https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr7-72hvh-670m) - 15 differences, the largest is module efficiency - [Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVDF-665M](https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr7-72hvdf-665m) - 14 differences, the largest is module efficiency - [Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVD-665M](https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr7-72hvd-665m) - 14 differences, the largest is module efficiency - [Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVH-665M](https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr7-72hvh-665m) - 15 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/longi-lr5-72hgd-590m/longi-lr7-72hvhf-665m 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.