--- title: "Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8B-445 - Solar Panel Comparison | ComparePV" description: "Compare Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8B-445 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8b-445" updated: 2026-09-12 --- # Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8B-445 445 leads on the differences that matter The largest is module efficiency: 0.30 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Runergy HY-DH108N8B-440](https://comparepv.com/panel/runergy-hy-dh108n8b-440) | [Runergy HY-DH108N8B-445](https://comparepv.com/panel/runergy-hy-dh108n8b-445) | | Manufacturer | Runergy | Runergy | | Power | 440 Wp | 445 Wp | | Efficiency | 22.50 % | 22.80 % | | Technology | N-type | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 440 | 445 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.50 % | 22.80 % | +0.30 pp for 445 | ## Every compared parameter | Parameter | 440 | 445 | | --- | --- | --- | | Rated power | 440 Wp | 445 Wp | | Module efficiency | 22.50 % | 22.80 % | | Power density | 225.3 Wp/m² | 227.9 Wp/m² | | Open-circuit voltage | 39.16 V | 39.35 V | | Voltage at max power | 33.21 V | 33.39 V | | Short-circuit current | 13.88 A | 13.96 A | | Current at max power | 13.25 A | 13.33 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1722x1134x30 mm | 1722x1134x30 mm | | Module area | 1.953 m² | 1.953 m² | | Weight | 24.2 kg | 24.2 kg | | Weight per kWp | 55.0 kg/kWp | 54.4 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | N-type | N-type | | 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 (-0.290 %/°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, 440:** 14,763 kWh - **Cumulative output, 445:** 14,931 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 440 | 445 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 440 W | 445 W | 100.0% of rated power | | Cool, bright day | 40 °C | 421 W | 426 W | 95.7% of rated power | | Typical summer roof | 55 °C | 402 W | 406 W | 91.3% of rated power | | Hot roof | 70 °C | 383 W | 387 W | 87.0% of rated power | ## Against the whole database | Measure | 440 | 445 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,222 | #2,714 | 14,005 | 445 leads by 1,508 places | | Power density | #4,099 | #2,790 | 14,005 | 445 leads by 1,309 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #9,361 | #8,683 | 14,005 | 445 leads by 678 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #9,409 | #8,970 | 14,005 | 445 leads by 439 places | ## Questions ### Which panel is better: Runergy HY-DH108N8B-440 or Runergy HY-DH108N8B-445? According to our database: **Runergy HY-DH108N8B-445** has higher module efficiency (**22.80%** vs **22.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Runergy HY-DH108N8B-440 and Runergy HY-DH108N8B-445? **Runergy HY-DH108N8B-440** has a module efficiency of **22.50%**, while **Runergy HY-DH108N8B-445** is **22.80%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Runergy HY-DH108N8B-440 use vs Runergy HY-DH108N8B-445? **Runergy HY-DH108N8B-440** uses **N-type** cells; **Runergy HY-DH108N8B-445** uses **N-type**. 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 Runergy HY-DH108N8B-440 and Runergy HY-DH108N8B-445? **Runergy HY-DH108N8B-440** has a **30 years** power warranty; **Runergy HY-DH108N8B-445** 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 Runergy HY-DH108N8B-440 and Runergy HY-DH108N8B-445 bifacial panels? Both **Runergy HY-DH108N8B-440** and **Runergy HY-DH108N8B-445** 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 - [Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8B-450](https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8b-450) - 3 differences, the largest is module efficiency - [Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8-450](https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8-450) - 3 differences, the largest is module efficiency - [Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8-445](https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8-445) - One difference: module efficiency - [Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8-440](https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8-440) - The same specification on paper - [Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8B-435](https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8b-435) - One difference: module efficiency - [Runergy HY-DH108N8B-440 vs Runergy HY-DH108N8-435](https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8-435) - One difference: module efficiency --- Source: https://comparepv.com/compare/runergy-hy-dh108n8b-440/runergy-hy-dh108n8b-445 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.