--- title: "Longi Solar LR7-60HVH-540M vs Tongwei TWMND-72 HD575 - Solar Panel Comparison | ComparePV" description: "Compare Longi Solar LR7-60HVH-540M vs Tongwei TWMND-72 HD575 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/longi-lr7-60hvh-540m/tongwei-twmnd-72-hd575" image: "https://comparepv.com/og/compare/panels/longi-lr7-60hvh-540m/tongwei-twmnd-72-hd575.png" updated: 2026-09-11 --- # Longi Solar LR7-60HVH-540M vs Tongwei TWMND-72 HD575 LR7-60HVH-540M leads on the differences that matter The largest is module efficiency: 1.60 pp more efficient. 2 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Longi Solar LR7-60HVH-540M](https://comparepv.com/panel/longi-lr7-60hvh-540m) | [Tongwei TWMND-72 HD575](https://comparepv.com/panel/tongwei-twmnd-72-hd575) | | Manufacturer | Longi Solar | Tongwei | | Power | 540 Wp | 575 Wp | | Efficiency | 23.90 % | 22.30 % | | Technology | N-type | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | LR7-60HVH-540M | TWMND-72 HD575 | Difference | | --- | --- | --- | --- | | Module efficiency | 23.90 % | 22.30 % | +1.60 pp for LR7-60HVH-540M | | Power density | 239.3 Wp/m² | 222.6 Wp/m² | +16.7 Wp/m² for LR7-60HVH-540M | | Rated power | 540 Wp | 575 Wp | +35 W for TWMND-72 HD575 | | Weight | 25.0 kg | 31.5 kg | -6.5 kg for LR7-60HVH-540M | | Weight per kWp | 46.3 kg/kWp | 54.8 kg/kWp | -8.5 kg/kWp for LR7-60HVH-540M | | Temperature coefficient | -0.260 %/°C | -0.280 %/°C | +0.020 %/°C for LR7-60HVH-540M | | Product warranty | 15 yrs | 12 yrs | +3 yrs for LR7-60HVH-540M | | Open-circuit voltage | 44.88 V | 52.10 V | 7.22 V apart | | Module area | 2.257 m² | 2.583 m² | 0.327 m² apart | | Short-circuit current | 15.25 A | 13.80 A | 1.45 A apart | | Cell technology | N-type | TOPCon | N-type vs TOPCon | | Annual degradation | 0.35 %/yr | 0.40 %/yr | -0.05 %/yr for LR7-60HVH-540M | | Voltage at max power | 37.11 V | 43.76 V | 6.65 V apart | | Cell count | 120 | 144 | 24 cells apart | | Bifacial | No | Yes | No vs Yes | | Current at max power | 14.55 A | 13.14 A | 1.41 A apart | | Dimensions | 1990x1134x30 mm | 2278x1134x30 mm | 1990x1134x30 mm vs 2278x1134x30 mm | ## Every compared parameter | Parameter | LR7-60HVH-540M | TWMND-72 HD575 | | --- | --- | --- | | Rated power | 540 Wp | 575 Wp | | Module efficiency | 23.90 % | 22.30 % | | Power density | 239.3 Wp/m² | 222.6 Wp/m² | | Open-circuit voltage | 44.88 V | 52.10 V | | Voltage at max power | 37.11 V | 43.76 V | | Short-circuit current | 15.25 A | 13.80 A | | Current at max power | 14.55 A | 13.14 A | | Temperature coefficient | -0.260 %/°C | -0.280 %/°C | | Dimensions | 1990x1134x30 mm | 2278x1134x30 mm | | Module area | 2.257 m² | 2.583 m² | | Weight | 25.0 kg | 31.5 kg | | Weight per kWp | 46.3 kg/kWp | 54.8 kg/kWp | | Product warranty | 15 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.35 %/yr | 0.40 %/yr | | Cell technology | N-type | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 120 | 144 | | Bifacial | No | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, LR7-60HVH-540M:** 18,259 kWh - **Cumulative output, TWMND-72 HD575:** 19,292 kWh - **Gap:** 1,033 kWh ## Output when hot | Condition | Cell temperature | LR7-60HVH-540M | TWMND-72 HD575 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 540 W | 575 W | 100.0% of rated power | | Cool, bright day | 40 °C | 519 W | 551 W | 95.8% of rated power | | Typical summer roof | 55 °C | 498 W | 527 W | 91.6% of rated power | | Hot roof | 70 °C | 477 W | 503 W | 87.4% of rated power | ## Against the whole database | Measure | LR7-60HVH-540M | TWMND-72 HD575 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #378 | #5,161 | 14,129 | LR7-60HVH-540M leads by 4,783 places | | Power density | #380 | #5,612 | 14,129 | LR7-60HVH-540M leads by 5,232 places | | Heat behaviour | #515 | #1,347 | 14,129 | LR7-60HVH-540M leads by 832 places | | Weight | #1,110 | #9,257 | 14,129 | LR7-60HVH-540M leads by 8,147 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #3,567 | #4,927 | 14,129 | LR7-60HVH-540M leads by 1,360 places | ## Questions ### Which panel is better: Longi Solar LR7-60HVH-540M or Tongwei TWMND-72 HD575? According to our database: **Longi Solar LR7-60HVH-540M** has higher module efficiency (**23.90%** vs **22.30%**); **Longi Solar LR7-60HVH-540M** 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 LR7-60HVH-540M and Tongwei TWMND-72 HD575? **Longi Solar LR7-60HVH-540M** has a module efficiency of **23.90%**, while **Tongwei TWMND-72 HD575** is **22.30%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Longi Solar LR7-60HVH-540M use vs Tongwei TWMND-72 HD575? **Longi Solar LR7-60HVH-540M** uses **N-type** cells; **Tongwei TWMND-72 HD575** uses **TOPCon**. 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 LR7-60HVH-540M and Tongwei TWMND-72 HD575? **Longi Solar LR7-60HVH-540M** has a **30 years** power warranty; **Tongwei TWMND-72 HD575** 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 LR7-60HVH-540M and Tongwei TWMND-72 HD575 bifacial panels? **Tongwei TWMND-72 HD575** is bifacial (captures light from both faces); **Longi Solar LR7-60HVH-540M** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-560M](https://comparepv.com/compare/longi-lr7-60hvh-540m/longi-lr7-60hvh-560m) - 3 differences, the largest is module efficiency - [Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-555M](https://comparepv.com/compare/longi-lr7-60hvh-540m/longi-lr7-60hvh-555m) - 3 differences, the largest is module efficiency - [Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-550M](https://comparepv.com/compare/longi-lr7-60hvh-540m/longi-lr7-60hvh-550m) - 3 differences, the largest is module efficiency - [Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-545M](https://comparepv.com/compare/longi-lr7-60hvh-540m/longi-lr7-60hvh-545m) - One difference: module efficiency - [Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-535M](https://comparepv.com/compare/longi-lr7-60hvh-540m/longi-lr7-60hvh-535m) - One difference: module efficiency - [Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD750](https://comparepv.com/compare/tongwei-twmnd-72-hd575/tongwei-solar-twmnf-66hd750) - 12 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/longi-lr7-60hvh-540m/tongwei-twmnd-72-hd575 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.