--- title: "Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD108N-R2-515 - Solar Panel Comparison | ComparePV" description: "Compare Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD108N-R2-515 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-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-515" updated: 2026-09-11 --- # Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD108N-R2-515 515 leads on the differences that matter The largest is module efficiency: 0.50 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Jolywood JW-HD108N-R2-505](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505) | [Jolywood JW-HD108N-R2-515](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-515) | | Manufacturer | Jolywood | Jolywood | | Power | 505 Wp | 515 Wp | | Efficiency | 22.70 % | 23.20 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 505 | 515 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.70 % | 23.20 % | +0.50 pp for 515 | | Power density | 227.2 Wp/m² | 231.7 Wp/m² | +4.5 Wp/m² for 515 | | Rated power | 505 Wp | 515 Wp | +10 W for 515 | ## Every compared parameter | Parameter | 505 | 515 | | --- | --- | --- | | Rated power | 505 Wp | 515 Wp | | Module efficiency | 22.70 % | 23.20 % | | Power density | 227.2 Wp/m² | 231.7 Wp/m² | | Open-circuit voltage | 39.23 V | 39.63 V | | Voltage at max power | 33.68 V | 34.04 V | | Short-circuit current | 15.84 A | 15.96 A | | Current at max power | 14.99 A | 15.13 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 | 54.1 kg/kWp | 53.0 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, 505:** 16,944 kWh - **Cumulative output, 515:** 17,279 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | 505 | 515 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 505 W | 515 W | 100.0% of rated power | | Cool, bright day | 40 °C | 484 W | 493 W | 95.8% of rated power | | Typical summer roof | 55 °C | 463 W | 472 W | 91.6% of rated power | | Hot roof | 70 °C | 441 W | 450 W | 87.4% of rated power | ## Against the whole database | Measure | 505 | 515 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3,307 | #1,306 | 14,005 | 515 leads by 2,001 places | | Power density | #3,238 | #1,447 | 14,005 | 515 leads by 1,791 places | | Heat behaviour | #1,309 | #1,309 | 14,005 | Tied - the same position in the database | | Weight | #8,277 | #6,762 | 14,005 | 515 leads by 1,515 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,170 | #3,207 | 14,005 | 515 leads by 963 places | ## Questions ### Which panel is better: Jolywood JW-HD108N-R2-505 or Jolywood JW-HD108N-R2-515? According to our database: **Jolywood JW-HD108N-R2-515** has higher module efficiency (**23.20%** vs **22.70%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Jolywood JW-HD108N-R2-505 and Jolywood JW-HD108N-R2-515? **Jolywood JW-HD108N-R2-505** has a module efficiency of **22.70%**, while **Jolywood JW-HD108N-R2-515** is **23.20%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Jolywood JW-HD108N-R2-505 use vs Jolywood JW-HD108N-R2-515? **Jolywood JW-HD108N-R2-505** uses **TOPCon** cells; **Jolywood JW-HD108N-R2-515** 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-R2-505 and Jolywood JW-HD108N-R2-515? **Jolywood JW-HD108N-R2-505** has a **30 years** power warranty; **Jolywood JW-HD108N-R2-515** 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-R2-505 and Jolywood JW-HD108N-R2-515 bifacial panels? Both **Jolywood JW-HD108N-R2-505** and **Jolywood JW-HD108N-R2-515** 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-R2-505 vs Jolywood JW-HD108N-R2-525](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-525) - 4 differences, the largest is module efficiency - [Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD108N-R2-520](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-520) - 3 differences, the largest is module efficiency - [Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD108N-R2-510](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-510) - One difference: module efficiency - [Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD108N-R2-500](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500) - One difference: module efficiency - [Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD132N-715W](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd132n-715w) - 11 differences, the largest is rated power - [Jolywood JW-HD108N-R2-505 vs Jolywood JW-HD132N-715](https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd132n-715) - 11 differences, the largest is rated power --- Source: https://comparepv.com/compare/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-515 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.