--- title: "Hyundai HiT-H520LF-FB(ZB) vs Longi Solar LR7-54HJD-510M - Solar Panel Comparison | ComparePV" description: "Compare Hyundai HiT-H520LF-FB(ZB) vs Longi Solar LR7-54HJD-510M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/hyundai-hit-h520lf-fb-zb/longi-lr7-54hjd-510m" updated: 2026-09-11 --- # Hyundai HiT-H520LF-FB(ZB) vs Longi Solar LR7-54HJD-510M LR7-54HJD-510M leads on the differences that matter The largest is module efficiency: 1.60 pp more efficient. 10 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Hyundai HiT-H520LF-FB(ZB)](https://comparepv.com/panel/hyundai-hit-h520lf-fb-zb) | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | | Manufacturer | Hyundai | Longi Solar | | Power | 520 Wp | 510 Wp | | Efficiency | 23.40 % | 25.00 % | | Technology | HJT | Back Contact | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | HiT-H520LF-FB(ZB) | LR7-54HJD-510M | Difference | | --- | --- | --- | --- | | Module efficiency | 23.40 % | 25.00 % | +1.60 pp for LR7-54HJD-510M | | Power density | 234.0 Wp/m² | 249.9 Wp/m² | +15.9 Wp/m² for LR7-54HJD-510M | | Weight | 27.1 kg | 23.5 kg | -3.6 kg for LR7-54HJD-510M | | Weight per kWp | 52.1 kg/kWp | 46.1 kg/kWp | -6.0 kg/kWp for LR7-54HJD-510M | | Module area | 2.223 m² | 2.041 m² | 0.181 m² apart | | Cell technology | HJT | Back Contact | HJT vs Back Contact | | Rated power | 520 Wp | 510 Wp | +10 W for HiT-H520LF-FB(ZB) | | Annual degradation | 0.30 %/yr | 0.35 %/yr | -0.05 %/yr for HiT-H520LF-FB(ZB) | | Dimensions | 1960x1134x30 mm | 1800x1134x30 mm | 1960x1134x30 mm vs 1800x1134x30 mm | ## Every compared parameter | Parameter | HiT-H520LF-FB(ZB) | LR7-54HJD-510M | | --- | --- | --- | | Rated power | 520 Wp | 510 Wp | | Module efficiency | 23.40 % | 25.00 % | | Power density | 234.0 Wp/m² | 249.9 Wp/m² | | Open-circuit voltage | 41.20 V | 41.55 V | | Voltage at max power | 34.60 V | 34.37 V | | Short-circuit current | 15.92 A | 15.52 A | | Current at max power | 15.04 A | 14.84 A | | Temperature coefficient | -0.240 %/°C | -0.240 %/°C | | Dimensions | 1960x1134x30 mm | 1800x1134x30 mm | | Module area | 2.223 m² | 2.041 m² | | Weight | 27.1 kg | 23.5 kg | | Weight per kWp | 52.1 kg/kWp | 46.1 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.30 %/yr | 0.35 %/yr | | Cell technology | HJT | Back Contact | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 108 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, HiT-H520LF-FB(ZB):** 17,718 kWh - **Cumulative output, LR7-54HJD-510M:** 17,245 kWh - **Gap:** 473 kWh ## Output when hot | Condition | Cell temperature | HiT-H520LF-FB(ZB) | LR7-54HJD-510M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 520 W | 510 W | 100.0% of rated power | | Cool, bright day | 40 °C | 501 W | 492 W | 96.4% of rated power | | Typical summer roof | 55 °C | 483 W | 473 W | 92.8% of rated power | | Hot roof | 70 °C | 464 W | 455 W | 89.2% of rated power | ## Against the whole database | Measure | HiT-H520LF-FB(ZB) | LR7-54HJD-510M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #882 | #4 | 14,005 | LR7-54HJD-510M leads by 878 places | | Power density | #898 | #7 | 14,005 | LR7-54HJD-510M leads by 891 places | | Heat behaviour | #13 | #13 | 14,005 | Tied - the same position in the database | | Weight | #5,593 | #979 | 14,005 | LR7-54HJD-510M leads by 4,614 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1,953 | #1,144 | 14,005 | LR7-54HJD-510M leads by 809 places | ## Questions ### Which panel is better: Hyundai HiT-H520LF-FB(ZB) or Longi Solar LR7-54HJD-510M? According to our database: **Longi Solar LR7-54HJD-510M** has higher module efficiency (**25.00%** vs **23.40%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Hyundai HiT-H520LF-FB(ZB) and Longi Solar LR7-54HJD-510M? **Hyundai HiT-H520LF-FB(ZB)** has a module efficiency of **23.40%**, while **Longi Solar LR7-54HJD-510M** is **25.00%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Hyundai HiT-H520LF-FB(ZB) use vs Longi Solar LR7-54HJD-510M? **Hyundai HiT-H520LF-FB(ZB)** uses **HJT** cells; **Longi Solar LR7-54HJD-510M** uses **Back Contact**. 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 Hyundai HiT-H520LF-FB(ZB) and Longi Solar LR7-54HJD-510M? **Hyundai HiT-H520LF-FB(ZB)** has a **30 years** power warranty; **Longi Solar LR7-54HJD-510M** 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 Hyundai HiT-H520LF-FB(ZB) and Longi Solar LR7-54HJD-510M bifacial panels? Both **Hyundai HiT-H520LF-FB(ZB)** and **Longi Solar LR7-54HJD-510M** 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 - [Hyundai HiT-H520LF-FB(ZB) vs Hyundai HiT-H515LF-FB(ZB)](https://comparepv.com/compare/hyundai-hit-h520lf-fb-zb/hyundai-hit-h515lf-fb-zb) - One difference: module efficiency - [Hyundai HiT-H520LF-FB(ZB) vs Hyundai HiT-H510LF-FB(ZB)](https://comparepv.com/compare/hyundai-hit-h520lf-fb-zb/hyundai-hit-h510lf-fb-zb) - 3 differences, the largest is module efficiency - [Hyundai HiT-H520LF-FB(ZB) vs Hyundai HiT-H505LF-FB(ZB)](https://comparepv.com/compare/hyundai-hit-h520lf-fb-zb/hyundai-hit-h505lf-fb-zb) - 3 differences, the largest is module efficiency - [Hyundai HiT-H520LF-FB(ZB) vs Hyundai HiT-H500LF-FB(ZB)](https://comparepv.com/compare/hyundai-hit-h520lf-fb-zb/hyundai-hit-h500lf-fb-zb) - 4 differences, the largest is module efficiency - [Longi Solar LR7-54HJD-510M vs Longi Solar LR7-54HJD-505M](https://comparepv.com/compare/longi-lr7-54hjd-510m/longi-lr7-54hjd-505m) - One difference: module efficiency - [Longi Solar LR7-54HJD-510M vs Longi Solar LR7-54HJD-500M](https://comparepv.com/compare/longi-lr7-54hjd-510m/longi-lr7-54hjd-500m) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/hyundai-hit-h520lf-fb-zb/longi-lr7-54hjd-510m 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.