--- title: "AIKO AIKO-A805-GRH78Dw vs Sunplus 750 - Solar Panel Comparison | ComparePV" description: "Compare AIKO AIKO-A805-GRH78Dw vs Sunplus 750 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/aiko-aiko-a805-grh78dw/sunplus-750" updated: 2026-09-11 --- # AIKO AIKO-A805-GRH78Dw vs Sunplus 750 AIKO-A805-GRH78Dw leads on the differences that matter The largest is module efficiency: 1.00 pp more efficient. 5 of 17 comparable parameters are identical, with 2 more left out because at least one datasheet does not publish them. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | [Sunplus 750](https://comparepv.com/panel/sunplus-750) | | Manufacturer | AIKO | Sunplus | | Power | 805 Wp | 750 Wp | | Efficiency | 25.10 % | 24.10 % | | Technology | Back Contact | HJT | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | AIKO-A805-GRH78Dw | 750 | Difference | | --- | --- | --- | --- | | Module efficiency | 25.10 % | 24.10 % | +1.00 pp for AIKO-A805-GRH78Dw | | Temperature coefficient | -0.260 %/°C | -0.300 %/°C | +0.040 %/°C for AIKO-A805-GRH78Dw | | Rated power | 805 Wp | 750 Wp | +55 W for AIKO-A805-GRH78Dw | | Power density | 250.6 Wp/m² | 241.4 Wp/m² | +9.2 Wp/m² for AIKO-A805-GRH78Dw | | Open-circuit voltage | 59.42 V | 51.03 V | 8.39 V apart | | Module area | 3.212 m² | 3.106 m² | 0.106 m² apart | | Cell technology | Back Contact | HJT | Back Contact vs HJT | | Voltage at max power | 49.46 V | 44.41 V | 5.05 V apart | | Weight per kWp | 49.4 kg/kWp | 52.0 kg/kWp | -2.6 kg/kWp for AIKO-A805-GRH78Dw | | Short-circuit current | 17.13 A | 17.74 A | 0.61 A apart | | Dimensions | 2465x1303x33 mm | 2384x1303x35 mm | 2465x1303x33 mm vs 2384x1303x35 mm | | Current at max power | 16.28 A | 16.89 A | 0.61 A apart | ## Every compared parameter | Parameter | AIKO-A805-GRH78Dw | 750 | | --- | --- | --- | | Rated power | 805 Wp | 750 Wp | | Module efficiency | 25.10 % | 24.10 % | | Power density | 250.6 Wp/m² | 241.4 Wp/m² | | Open-circuit voltage | 59.42 V | 51.03 V | | Voltage at max power | 49.46 V | 44.41 V | | Short-circuit current | 17.13 A | 17.74 A | | Current at max power | 16.28 A | 16.89 A | | Temperature coefficient | -0.260 %/°C | -0.300 %/°C | | Dimensions | 2465x1303x33 mm | 2384x1303x35 mm | | Module area | 3.212 m² | 3.106 m² | | Weight | 39.8 kg | 39.0 kg | | Weight per kWp | 49.4 kg/kWp | 52.0 kg/kWp | | Product warranty | 15 yrs | - | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | 0.31 %/yr | | Cell technology | Back Contact | HJT | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 156 | 156 | | Bifacial | Yes | Yes | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year - **Cumulative output, AIKO-A805-GRH78Dw:** 27,009 kWh - **Cumulative output, 750:** 25,164 kWh - **Gap:** 1,845 kWh ## Output when hot | Condition | Cell temperature | AIKO-A805-GRH78Dw | 750 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 805 W | 750 W | 100.0% of rated power | | Cool, bright day | 40 °C | 774 W | 716 W | 95.5% of rated power | | Typical summer roof | 55 °C | 742 W | 683 W | 91.0% of rated power | | Hot roof | 70 °C | 711 W | 649 W | 86.5% of rated power | ## Against the whole database | Measure | AIKO-A805-GRH78Dw | 750 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3 | #219 | 14,005 | AIKO-A805-GRH78Dw leads by 216 places | | Power density | #3 | #219 | 14,005 | AIKO-A805-GRH78Dw leads by 216 places | | Heat behaviour | #511 | #6,093 | 14,005 | AIKO-A805-GRH78Dw leads by 5,582 places | | Weight | #2,977 | #5,417 | 14,005 | AIKO-A805-GRH78Dw leads by 2,440 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1 | #665 | 14,005 | AIKO-A805-GRH78Dw leads by 664 places | ## Questions ### Which panel is better: AIKO AIKO-A805-GRH78Dw or Sunplus 750? According to our database: **AIKO AIKO-A805-GRH78Dw** has higher module efficiency (**25.10%** vs **24.10%**); **AIKO AIKO-A805-GRH78Dw** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.300%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AIKO AIKO-A805-GRH78Dw and Sunplus 750? **AIKO AIKO-A805-GRH78Dw** has a module efficiency of **25.10%**, while **Sunplus 750** is **24.10%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AIKO AIKO-A805-GRH78Dw use vs Sunplus 750? **AIKO AIKO-A805-GRH78Dw** uses **Back Contact** cells; **Sunplus 750** uses **HJT**. 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 AIKO AIKO-A805-GRH78Dw and Sunplus 750? **AIKO AIKO-A805-GRH78Dw** has a **30 years** power warranty; **Sunplus 750** 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 AIKO AIKO-A805-GRH78Dw and Sunplus 750 bifacial panels? Both **AIKO AIKO-A805-GRH78Dw** and **Sunplus 750** 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 - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A800-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a800-grh78dw) - One difference: module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A795-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a795-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A790-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a790-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A785-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a785-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A780-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a780-grh78dw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A775-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a805-grh78dw/aiko-aiko-a775-grh78dw) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/aiko-aiko-a805-grh78dw/sunplus-750 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.