--- title: "AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A780-GRH78Dw - Solar Panel Comparison | ComparePV" description: "Compare AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A780-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-a470-mah54mw/aiko-aiko-a780-grh78dw" image: "https://comparepv.com/og/compare/panels/aiko-aiko-a470-mah54mw/aiko-aiko-a780-grh78dw.png" updated: 2026-09-11 --- # AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A780-GRH78Dw 14 differences, and they point both ways The largest is module efficiency: 0.70 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-A470-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a470-mah54mw) | [AIKO AIKO-A780-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a780-grh78dw) | | Manufacturer | AIKO | AIKO | | Power | 470 Wp | 780 Wp | | Efficiency | 23.60 % | 24.30 % | | Technology | Back Contact | Back Contact | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | A470-MAH54Mw | A780-GRH78Dw | Difference | | --- | --- | --- | --- | | Module efficiency | 23.60 % | 24.30 % | +0.70 pp for A780-GRH78Dw | | Rated power | 470 Wp | 780 Wp | +310 W for A780-GRH78Dw | | Weight | 21.5 kg | 39.8 kg | -18.3 kg for A470-MAH54Mw | | Product warranty | 25 yrs | 15 yrs | +10 yrs for A470-MAH54Mw | | Power density | 235.9 Wp/m² | 242.8 Wp/m² | +7.0 Wp/m² for A780-GRH78Dw | | Open-circuit voltage | 41.18 V | 58.92 V | 17.74 V apart | | Short-circuit current | 14.32 A | 16.78 A | 2.46 A apart | | Module area | 1.992 m² | 3.212 m² | 1.219 m² apart | | Weight per kWp | 45.7 kg/kWp | 51.0 kg/kWp | -5.3 kg/kWp for A470-MAH54Mw | | Voltage at max power | 34.74 V | 48.97 V | 14.23 V apart | | Current at max power | 13.54 A | 15.93 A | 2.39 A apart | | Cell count | 108 | 156 | 48 cells apart | | Bifacial | No | Yes | No vs Yes | | Dimensions | 1757x1134x30 mm | 2465x1303x33 mm | 1757x1134x30 mm vs 2465x1303x33 mm | ## Every compared parameter | Parameter | A470-MAH54Mw | A780-GRH78Dw | | --- | --- | --- | | Rated power | 470 Wp | 780 Wp | | Module efficiency | 23.60 % | 24.30 % | | Power density | 235.9 Wp/m² | 242.8 Wp/m² | | Open-circuit voltage | 41.18 V | 58.92 V | | Voltage at max power | 34.74 V | 48.97 V | | Short-circuit current | 14.32 A | 16.78 A | | Current at max power | 13.54 A | 15.93 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 1757x1134x30 mm | 2465x1303x33 mm | | Module area | 1.992 m² | 3.212 m² | | Weight | 21.5 kg | 39.8 kg | | Weight per kWp | 45.7 kg/kWp | 51.0 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, A470-MAH54Mw:** 15,769 kWh - **Cumulative output, A780-GRH78Dw:** 26,171 kWh - **Gap:** 10,402 kWh ## Output when hot | Condition | Cell temperature | A470-MAH54Mw | A780-GRH78Dw | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 470 W | 780 W | 100.0% of rated power | | Cool, bright day | 40 °C | 452 W | 750 W | 96.1% of rated power | | Typical summer roof | 55 °C | 433 W | 719 W | 92.2% of rated power | | Hot roof | 70 °C | 415 W | 689 W | 88.3% of rated power | ## Against the whole database | Measure | A470-MAH54Mw | A780-GRH78Dw | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #659 | #145 | 14,129 | A780-GRH78Dw leads by 514 places | | Power density | #690 | #153 | 14,129 | A780-GRH78Dw leads by 537 places | | Heat behaviour | #515 | #515 | 14,129 | Tied - the same position in the database | | Weight | #860 | #4,401 | 14,129 | A470-MAH54Mw leads by 3,541 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #4,174 | #16 | 14,129 | A780-GRH78Dw leads by 4,158 places | ## Questions ### Which panel is better: AIKO AIKO-A470-MAH54Mw or AIKO AIKO-A780-GRH78Dw? According to our database: **AIKO AIKO-A780-GRH78Dw** has higher module efficiency (**24.30%** vs **23.60%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AIKO AIKO-A470-MAH54Mw and AIKO AIKO-A780-GRH78Dw? **AIKO AIKO-A470-MAH54Mw** has a module efficiency of **23.60%**, while **AIKO AIKO-A780-GRH78Dw** is **24.30%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AIKO AIKO-A470-MAH54Mw use vs AIKO AIKO-A780-GRH78Dw? **AIKO AIKO-A470-MAH54Mw** uses **Back Contact** cells; **AIKO AIKO-A780-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-A470-MAH54Mw and AIKO AIKO-A780-GRH78Dw? **AIKO AIKO-A470-MAH54Mw** has a **30 years** power warranty; **AIKO AIKO-A780-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-A470-MAH54Mw and AIKO AIKO-A780-GRH78Dw bifacial panels? **AIKO AIKO-A780-GRH78Dw** is bifacial (captures light from both faces); **AIKO AIKO-A470-MAH54Mw** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A485-MAH54Mw](https://comparepv.com/compare/aiko-aiko-a470-mah54mw/aiko-aiko-a485-mah54mw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A480-MAH54Mw](https://comparepv.com/compare/aiko-aiko-a470-mah54mw/aiko-aiko-a480-mah54mw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A475-MAH54Mw](https://comparepv.com/compare/aiko-aiko-a470-mah54mw/aiko-aiko-a475-mah54mw) - One difference: module efficiency - [AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A465-MAH54Mw](https://comparepv.com/compare/aiko-aiko-a470-mah54mw/aiko-aiko-a465-mah54mw) - One difference: module efficiency - [AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A460-MAH54Mw](https://comparepv.com/compare/aiko-aiko-a470-mah54mw/aiko-aiko-a460-mah54mw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A470-MAH54Mw vs AIKO AIKO-A455-MAH54Mw](https://comparepv.com/compare/aiko-aiko-a470-mah54mw/aiko-aiko-a455-mah54mw) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/aiko-aiko-a470-mah54mw/aiko-aiko-a780-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.