--- title: "Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE - Solar Panel Comparison | ComparePV" description: "Compare Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-3-0-108-490wp-performance" updated: 2026-09-13 --- # Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE 485WP leads on the differences that matter The largest is module efficiency: 0.30 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | [Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-490wp-performance) | | Manufacturer | Heckert Solar | Heckert Solar | | Power | 485 Wp | 490 Wp | | Efficiency | 24.30 % | 24.00 % | | Technology | Back Contact | Back Contact | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 485WP | 490WP PERFORMANCE | Difference | | --- | --- | --- | --- | | Module efficiency | 24.30 % | 24.00 % | +0.30 pp for 485WP | | Module area | 1.998 m² | 2.041 m² | 0.043 m² apart | | Dimensions | 1762x1134x30 mm | 1800x1134x30 mm | 1762x1134x30 mm vs 1800x1134x30 mm | ## Every compared parameter | Parameter | 485WP | 490WP PERFORMANCE | | --- | --- | --- | | Rated power | 485 Wp | 490 Wp | | Module efficiency | 24.30 % | 24.00 % | | Power density | 242.7 Wp/m² | 240.1 Wp/m² | | Open-circuit voltage | 41.00 V | 41.02 V | | Voltage at max power | 34.60 V | 34.04 V | | Short-circuit current | 14.84 A | 15.10 A | | Current at max power | 14.02 A | 14.40 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 1762x1134x30 mm | 1800x1134x30 mm | | Module area | 1.998 m² | 2.041 m² | | Weight | 24.2 kg | 24.8 kg | | Weight per kWp | 49.9 kg/kWp | 50.6 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.45 %/yr | 0.45 %/yr | | Cell technology | Back Contact | 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 (-0.260 %/°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, 485WP:** 15,972 kWh - **Cumulative output, 490WP PERFORMANCE:** 16,136 kWh - **Gap:** 164 kWh ## Output when hot | Condition | Cell temperature | 485WP | 490WP PERFORMANCE | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 485 W | 490 W | 100.0% of rated power | | Cool, bright day | 40 °C | 466 W | 471 W | 96.1% of rated power | | Typical summer roof | 55 °C | 447 W | 452 W | 92.2% of rated power | | Hot roof | 70 °C | 428 W | 433 W | 88.3% of rated power | ## Against the whole database | Measure | 485WP | 490WP PERFORMANCE | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #131 | #303 | 14,005 | 485WP leads by 172 places | | Power density | #140 | #313 | 14,005 | 485WP leads by 173 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #3,275 | #4,047 | 14,005 | 485WP leads by 772 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,068 | #2,176 | 14,005 | 485WP leads by 108 places | ## Questions ### Which panel is better: Heckert Solar ZEUS 3.0+ 108 485WP or Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE? According to our database: **Heckert Solar ZEUS 3.0+ 108 485WP** has higher module efficiency (**24.30%** vs **24.00%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Heckert Solar ZEUS 3.0+ 108 485WP and Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE? **Heckert Solar ZEUS 3.0+ 108 485WP** has a module efficiency of **24.30%**, while **Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE** is **24.00%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Heckert Solar ZEUS 3.0+ 108 485WP use vs Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE? **Heckert Solar ZEUS 3.0+ 108 485WP** uses **Back Contact** cells; **Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE** 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 Heckert Solar ZEUS 3.0+ 108 485WP and Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE? **Heckert Solar ZEUS 3.0+ 108 485WP** has a **30 years** power warranty; **Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE** 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 Heckert Solar ZEUS 3.0+ 108 485WP and Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE bifacial panels? Both **Heckert Solar ZEUS 3.0+ 108 485WP** and **Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE** 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 - [Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 3.0+ 108 490WP](https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-3-0-108-490wp) - 3 differences, the largest is module efficiency - [Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 3.0+ 108 485WP PERFORMANCE](https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-3-0-108-485wp-performance) - The same specification on paper - [Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 2.2 715](https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-2-2-715) - 15 differences, the largest is module efficiency - [Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 2.2-715](https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-2-2-715-1) - 15 differences, the largest is module efficiency - [Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 2.2 710](https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-2-2-710) - 15 differences, the largest is module efficiency - [Heckert Solar ZEUS 3.0+ 108 485WP vs Heckert Solar ZEUS 2.2-710](https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-2-2-710-1) - 15 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/heckert-solar-zeus-3-0-108-485wp/heckert-solar-zeus-3-0-108-490wp-performance 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.