--- title: "GCL GCL-M10/72GDF-B-540 vs Longi Solar LR5-72HBD-540M - Solar Panel Comparison | ComparePV" description: "Compare GCL GCL-M10/72GDF-B-540 vs Longi Solar LR5-72HBD-540M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/gcl-gcl-m10-72gdf-b-540/longi-lr5-72hbd-540m" image: "https://comparepv.com/og/compare/panels/gcl-gcl-m10-72gdf-b-540/longi-lr5-72hbd-540m.png" updated: 2026-09-11 --- # GCL GCL-M10/72GDF-B-540 vs Longi Solar LR5-72HBD-540M LR5-72HBD-540M leads on the differences that matter The largest is module efficiency: 0.30 pp more efficient. 11 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 | [GCL GCL-M10/72GDF-B-540](https://comparepv.com/panel/gcl-gcl-m10-72gdf-b-540) | [Longi Solar LR5-72HBD-540M](https://comparepv.com/panel/longi-lr5-72hbd-540m) | | Manufacturer | GCL | Longi Solar | | Power | 540 Wp | 540 Wp | | Efficiency | 20.60 % | 20.90 % | | Technology | PERC | | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | GCL-M10/72GDF-B-540 | LR5-72HBD-540M | Difference | | --- | --- | --- | --- | | Module efficiency | 20.60 % | 20.90 % | +0.30 pp for LR5-72HBD-540M | | Temperature coefficient | -0.350 %/°C | -0.340 %/°C | +0.010 %/°C for LR5-72HBD-540M | | Power density | 205.8 Wp/m² | 209.0 Wp/m² | +3.3 Wp/m² for LR5-72HBD-540M | | Weight | 33.2 kg | 31.8 kg | -1.4 kg for LR5-72HBD-540M | | Module area | 2.624 m² | 2.583 m² | 0.041 m² apart | | Weight per kWp | 61.5 kg/kWp | 58.9 kg/kWp | -2.6 kg/kWp for LR5-72HBD-540M | | Dimensions | 2290x1146x30 mm | 2278x1134x30 mm | 2290x1146x30 mm vs 2278x1134x30 mm | ## Every compared parameter | Parameter | GCL-M10/72GDF-B-540 | LR5-72HBD-540M | | --- | --- | --- | | Rated power | 540 Wp | 540 Wp | | Module efficiency | 20.60 % | 20.90 % | | Power density | 205.8 Wp/m² | 209.0 Wp/m² | | Open-circuit voltage | 49.24 V | 49.50 V | | Voltage at max power | 41.45 V | 41.65 V | | Short-circuit current | 13.78 A | 13.85 A | | Current at max power | 13.03 A | 12.97 A | | Temperature coefficient | -0.350 %/°C | -0.340 %/°C | | Dimensions | 2290x1146x30 mm | 2278x1134x30 mm | | Module area | 2.624 m² | 2.583 m² | | Weight | 33.2 kg | 31.8 kg | | Weight per kWp | 61.5 kg/kWp | 58.9 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.45 %/yr | 0.45 %/yr | | Cell technology | PERC | - | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, GCL-M10/72GDF-B-540:** 17,783 kWh - **Cumulative output, LR5-72HBD-540M:** 17,783 kWh - **Gap:** No difference ## Output when hot | Condition | Cell temperature | GCL-M10/72GDF-B-540 | LR5-72HBD-540M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 540 W | 540 W | 100.0% of rated power | | Cool, bright day | 40 °C | 512 W | 512 W | 94.8% of rated power | | Typical summer roof | 55 °C | 483 W | 485 W | 89.5% of rated power | | Hot roof | 70 °C | 455 W | 457 W | 84.2% of rated power | ## Against the whole database | Measure | GCL-M10/72GDF-B-540 | LR5-72HBD-540M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #11,172 | #10,148 | 14,129 | LR5-72HBD-540M leads by 1,024 places | | Power density | #11,223 | #10,176 | 14,129 | LR5-72HBD-540M leads by 1,047 places | | Heat behaviour | #10,489 | #8,846 | 14,129 | LR5-72HBD-540M leads by 1,643 places | | Weight | #12,749 | #12,026 | 14,129 | LR5-72HBD-540M leads by 723 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #8,376 | #7,953 | 14,129 | LR5-72HBD-540M leads by 423 places | ## Questions ### Which panel is better: GCL GCL-M10/72GDF-B-540 or Longi Solar LR5-72HBD-540M? According to our database: **Longi Solar LR5-72HBD-540M** has higher module efficiency (**20.90%** vs **20.60%**); **Longi Solar LR5-72HBD-540M** tolerates heat better (temp coeff **-0.340%/°C** vs **-0.350%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of GCL GCL-M10/72GDF-B-540 and Longi Solar LR5-72HBD-540M? **GCL GCL-M10/72GDF-B-540** has a module efficiency of **20.60%**, while **Longi Solar LR5-72HBD-540M** is **20.90%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does GCL GCL-M10/72GDF-B-540 use vs Longi Solar LR5-72HBD-540M? **GCL GCL-M10/72GDF-B-540** uses **PERC** cells; **Longi Solar LR5-72HBD-540M** 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 GCL GCL-M10/72GDF-B-540 and Longi Solar LR5-72HBD-540M? **GCL GCL-M10/72GDF-B-540** has a **30 years** power warranty; **Longi Solar LR5-72HBD-540M** 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 GCL GCL-M10/72GDF-B-540 and Longi Solar LR5-72HBD-540M bifacial panels? Both **GCL GCL-M10/72GDF-B-540** and **Longi Solar LR5-72HBD-540M** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [GCL GCL-M10/72GDF-B-540 vs GCL GCL-M10/72GDF-B-555](https://comparepv.com/compare/gcl-gcl-m10-72gdf-b-540/gcl-gcl-m10-72gdf-b-555) - 3 differences, the largest is module efficiency - [GCL GCL-M10/72GDF-B-540 vs GCL GCL-M10/72GDF-B-550](https://comparepv.com/compare/gcl-gcl-m10-72gdf-b-540/gcl-gcl-m10-72gdf-b-550) - 3 differences, the largest is module efficiency - [GCL GCL-M10/72GDF-B-540 vs GCL GCL-M10/72GDF-B-545](https://comparepv.com/compare/gcl-gcl-m10-72gdf-b-540/gcl-gcl-m10-72gdf-b-545) - One difference: module efficiency - [GCL GCL-M10/72GDF-B-540 vs GCL GCL-M10/72GDF-B-535](https://comparepv.com/compare/gcl-gcl-m10-72gdf-b-540/gcl-gcl-m10-72gdf-b-535) - One difference: module efficiency - [Longi Solar LR5-72HBD-540M vs Longi Solar LR7-72HVDF-655M](https://comparepv.com/compare/longi-lr5-72hbd-540m/longi-lr7-72hvdf-655m) - 14 differences, the largest is module efficiency - [Longi Solar LR5-72HBD-540M vs Longi Solar LR7-72HVHF-655M](https://comparepv.com/compare/longi-lr5-72hbd-540m/longi-lr7-72hvhf-655m) - 15 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/gcl-gcl-m10-72gdf-b-540/longi-lr5-72hbd-540m 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.