--- title: "Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD108N-R2-520 - Solar Panel Comparison | ComparePV" description: "Compare Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD108N-R2-520 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-520" updated: 2026-09-11 --- # Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD108N-R2-520 520 leads on the differences that matter The largest is module efficiency: 0.90 pp more efficient. 15 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Jolywood JW-HD108N-R2-500](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500) | [Jolywood JW-HD108N-R2-520](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-520) | | Manufacturer | Jolywood | Jolywood | | Power | 500 Wp | 520 Wp | | Efficiency | 22.50 % | 23.40 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 500 | 520 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.50 % | 23.40 % | +0.90 pp for 520 | | Power density | 225.0 Wp/m² | 234.0 Wp/m² | +9.0 Wp/m² for 520 | | Rated power | 500 Wp | 520 Wp | +20 W for 520 | | Weight per kWp | 54.6 kg/kWp | 52.5 kg/kWp | -2.1 kg/kWp for 520 | ## Every compared parameter | Parameter | 500 | 520 | | --- | --- | --- | | Rated power | 500 Wp | 520 Wp | | Module efficiency | 22.50 % | 23.40 % | | Power density | 225.0 Wp/m² | 234.0 Wp/m² | | Open-circuit voltage | 39.03 V | 39.83 V | | Voltage at max power | 33.50 V | 34.22 V | | Short-circuit current | 15.78 A | 16.02 A | | Current at max power | 14.92 A | 15.19 A | | Temperature coefficient | -0.280 %/°C | -0.280 %/°C | | Dimensions | 1960x1134x30 mm | 1960x1134x30 mm | | Module area | 2.223 m² | 2.223 m² | | Weight | 27.3 kg | 27.3 kg | | Weight per kWp | 54.6 kg/kWp | 52.5 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | 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 (-0.280 %/°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, 500:** 16,776 kWh - **Cumulative output, 520:** 17,447 kWh - **Gap:** 671 kWh ## Output when hot | Condition | Cell temperature | 500 | 520 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 500 W | 520 W | 100.0% of rated power | | Cool, bright day | 40 °C | 479 W | 498 W | 95.8% of rated power | | Typical summer roof | 55 °C | 458 W | 476 W | 91.6% of rated power | | Hot roof | 70 °C | 437 W | 454 W | 87.4% of rated power | ## Against the whole database | Measure | 500 | 520 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,222 | #882 | 14,005 | 520 leads by 3,340 places | | Power density | #4,450 | #898 | 14,005 | 520 leads by 3,552 places | | Heat behaviour | #1,309 | #1,309 | 14,005 | Tied - the same position in the database | | Weight | #8,949 | #6,043 | 14,005 | 520 leads by 2,906 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,561 | #2,797 | 14,005 | 520 leads by 1,764 places | ## Questions ### Which panel is better: Jolywood JW-HD108N-R2-500 or Jolywood JW-HD108N-R2-520? According to our database: **Jolywood JW-HD108N-R2-520** has higher module efficiency (**23.40%** vs **22.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Jolywood JW-HD108N-R2-500 and Jolywood JW-HD108N-R2-520? **Jolywood JW-HD108N-R2-500** has a module efficiency of **22.50%**, while **Jolywood JW-HD108N-R2-520** is **23.40%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Jolywood JW-HD108N-R2-500 use vs Jolywood JW-HD108N-R2-520? **Jolywood JW-HD108N-R2-500** uses **TOPCon** cells; **Jolywood JW-HD108N-R2-520** 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 Jolywood JW-HD108N-R2-500 and Jolywood JW-HD108N-R2-520? **Jolywood JW-HD108N-R2-500** has a **30 years** power warranty; **Jolywood JW-HD108N-R2-520** 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 Jolywood JW-HD108N-R2-500 and Jolywood JW-HD108N-R2-520 bifacial panels? Both **Jolywood JW-HD108N-R2-500** and **Jolywood JW-HD108N-R2-520** 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 - [Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD108N-R2-525](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-525) - 5 differences, the largest is module efficiency - [Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD108N-R2-515](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-515) - 3 differences, the largest is module efficiency - [Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD108N-R2-510](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-510) - 3 differences, the largest is module efficiency - [Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD108N-R2-505](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505) - One difference: module efficiency - [Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD132N-715W](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd132n-715w) - 12 differences, the largest is rated power - [Jolywood JW-HD108N-R2-500 vs Jolywood JW-HD132N-715](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd132n-715) - 12 differences, the largest is rated power --- Source: https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-520 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.