--- title: "AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A800-GRH78Dw - Solar Panel Comparison | ComparePV" description: "Compare AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A800-GRH78Dw 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-a475-mce54mb/aiko-aiko-a800-grh78dw" updated: 2026-09-11 --- # AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A800-GRH78Dw A800-GRH78Dw leads on the differences that matter The largest is module efficiency: 1.10 pp more efficient. 4 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [AIKO AIKO-A475-MCE54Mb](https://comparepv.com/panel/aiko-aiko-a475-mce54mb) | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | | Manufacturer | AIKO | AIKO | | Power | 475 Wp | 800 Wp | | Efficiency | 23.80 % | 24.90 % | | Technology | Back Contact | Back Contact | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | A475-MCE54Mb | A800-GRH78Dw | Difference | | --- | --- | --- | --- | | Module efficiency | 23.80 % | 24.90 % | +1.10 pp for A800-GRH78Dw | | Rated power | 475 Wp | 800 Wp | +325 W for A800-GRH78Dw | | Power density | 237.7 Wp/m² | 249.1 Wp/m² | +11.3 Wp/m² for A800-GRH78Dw | | Weight | 21.0 kg | 39.8 kg | -18.8 kg for A475-MCE54Mb | | Product warranty | 25 yrs | 15 yrs | +10 yrs for A475-MCE54Mb | | Weight per kWp | 44.2 kg/kWp | 49.7 kg/kWp | -5.5 kg/kWp for A475-MCE54Mb | | Open-circuit voltage | 40.70 V | 59.32 V | 18.62 V apart | | Short-circuit current | 14.76 A | 17.06 A | 2.30 A apart | | Module area | 1.998 m² | 3.212 m² | 1.214 m² apart | | Voltage at max power | 34.10 V | 49.36 V | 15.26 V apart | | Current at max power | 13.94 A | 16.21 A | 2.27 A apart | | Cell count | 108 | 156 | 48 cells apart | | Bifacial | No | Yes | No vs Yes | | Dimensions | 1762x1134x30 mm | 2465x1303x33 mm | 1762x1134x30 mm vs 2465x1303x33 mm | ## Every compared parameter | Parameter | A475-MCE54Mb | A800-GRH78Dw | | --- | --- | --- | | Rated power | 475 Wp | 800 Wp | | Module efficiency | 23.80 % | 24.90 % | | Power density | 237.7 Wp/m² | 249.1 Wp/m² | | Open-circuit voltage | 40.70 V | 59.32 V | | Voltage at max power | 34.10 V | 49.36 V | | Short-circuit current | 14.76 A | 17.06 A | | Current at max power | 13.94 A | 16.21 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 1762x1134x30 mm | 2465x1303x33 mm | | Module area | 1.998 m² | 3.212 m² | | Weight | 21.0 kg | 39.8 kg | | Weight per kWp | 44.2 kg/kWp | 49.7 kg/kWp | | Product warranty | 25 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.35 %/yr | - | | Cell technology | Back Contact | Back Contact | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 156 | | Bifacial | No | 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 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, A475-MCE54Mb:** 15,937 kWh - **Cumulative output, A800-GRH78Dw:** 26,842 kWh - **Gap:** 10,905 kWh ## Output when hot | Condition | Cell temperature | A475-MCE54Mb | A800-GRH78Dw | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 475 W | 800 W | 100.0% of rated power | | Cool, bright day | 40 °C | 456 W | 769 W | 96.1% of rated power | | Typical summer roof | 55 °C | 438 W | 738 W | 92.2% of rated power | | Hot roof | 70 °C | 419 W | 706 W | 88.3% of rated power | ## Against the whole database | Measure | A475-MCE54Mb | A800-GRH78Dw | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #433 | #10 | 14,005 | A800-GRH78Dw leads by 423 places | | Power density | #467 | #10 | 14,005 | A800-GRH78Dw leads by 457 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #396 | #3,214 | 14,005 | A475-MCE54Mb leads by 2,818 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #3,715 | #2 | 14,005 | A800-GRH78Dw leads by 3,713 places | ## Questions ### Which panel is better: AIKO AIKO-A475-MCE54Mb or AIKO AIKO-A800-GRH78Dw? According to our database: **AIKO AIKO-A800-GRH78Dw** has higher module efficiency (**24.90%** vs **23.80%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AIKO AIKO-A475-MCE54Mb and AIKO AIKO-A800-GRH78Dw? **AIKO AIKO-A475-MCE54Mb** has a module efficiency of **23.80%**, while **AIKO AIKO-A800-GRH78Dw** is **24.90%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AIKO AIKO-A475-MCE54Mb use vs AIKO AIKO-A800-GRH78Dw? **AIKO AIKO-A475-MCE54Mb** uses **Back Contact** cells; **AIKO AIKO-A800-GRH78Dw** 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 AIKO AIKO-A475-MCE54Mb and AIKO AIKO-A800-GRH78Dw? **AIKO AIKO-A475-MCE54Mb** has a **30 years** power warranty; **AIKO AIKO-A800-GRH78Dw** 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-A475-MCE54Mb and AIKO AIKO-A800-GRH78Dw bifacial panels? **AIKO AIKO-A800-GRH78Dw** is bifacial (captures light from both faces); **AIKO AIKO-A475-MCE54Mb** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A485-MCE54Mb](https://comparepv.com/compare/aiko-aiko-a475-mce54mb/aiko-aiko-a485-mce54mb) - 3 differences, the largest is module efficiency - [AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A480-MCE54Mb](https://comparepv.com/compare/aiko-aiko-a475-mce54mb/aiko-aiko-a480-mce54mb) - One difference: module efficiency - [AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A470-MCE54Mb](https://comparepv.com/compare/aiko-aiko-a475-mce54mb/aiko-aiko-a470-mce54mb) - One difference: module efficiency - [AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A465-MCE54Mb](https://comparepv.com/compare/aiko-aiko-a475-mce54mb/aiko-aiko-a465-mce54mb) - 3 differences, the largest is module efficiency - [AIKO AIKO-A475-MCE54Mb vs AIKO AIKO-A460-MCE54Mb](https://comparepv.com/compare/aiko-aiko-a475-mce54mb/aiko-aiko-a460-mce54mb) - 3 differences, the largest is module efficiency - [AIKO AIKO-A800-GRH78Dw vs AIKO AIKO-A805-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a800-grh78dw/aiko-aiko-a805-grh78dw) - One difference: module efficiency --- Source: https://comparepv.com/compare/aiko-aiko-a475-mce54mb/aiko-aiko-a800-grh78dw 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.