--- title: "AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A680-MDE72Mw - Solar Panel Comparison | ComparePV" description: "Compare AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A680-MDE72Mw 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-a660-mde72mw/aiko-aiko-a680-mde72mw" updated: 2026-09-11 --- # AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A680-MDE72Mw A680-MDE72Mw leads on the differences that matter The largest is module efficiency: 0.80 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [AIKO AIKO-A660-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a660-mde72mw) | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | | Manufacturer | AIKO | AIKO | | Power | 660 Wp | 680 Wp | | Efficiency | 24.40 % | 25.20 % | | Technology | Back Contact | Back Contact | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | A660-MDE72Mw | A680-MDE72Mw | Difference | | --- | --- | --- | --- | | Module efficiency | 24.40 % | 25.20 % | +0.80 pp for A680-MDE72Mw | | Power density | 244.3 Wp/m² | 251.7 Wp/m² | +7.4 Wp/m² for A680-MDE72Mw | | Rated power | 660 Wp | 680 Wp | +20 W for A680-MDE72Mw | ## Every compared parameter | Parameter | A660-MDE72Mw | A680-MDE72Mw | | --- | --- | --- | | Rated power | 660 Wp | 680 Wp | | Module efficiency | 24.40 % | 25.20 % | | Power density | 244.3 Wp/m² | 251.7 Wp/m² | | Open-circuit voltage | 54.60 V | 55.00 V | | Voltage at max power | 45.30 V | 45.70 V | | Short-circuit current | 15.24 A | 15.48 A | | Current at max power | 14.57 A | 14.88 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 2382x1134x30 mm | 2382x1134x30 mm | | Module area | 2.701 m² | 2.701 m² | | Weight | 29.0 kg | 29.0 kg | | Weight per kWp | 43.9 kg/kWp | 42.6 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.35 %/yr | 0.35 %/yr | | Cell technology | Back Contact | Back Contact | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | No | No | ## 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, A660-MDE72Mw:** 22,317 kWh - **Cumulative output, A680-MDE72Mw:** 22,993 kWh - **Gap:** 676 kWh ## Output when hot | Condition | Cell temperature | A660-MDE72Mw | A680-MDE72Mw | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 660 W | 680 W | 100.0% of rated power | | Cool, bright day | 40 °C | 634 W | 653 W | 96.1% of rated power | | Typical summer roof | 55 °C | 609 W | 627 W | 92.2% of rated power | | Hot roof | 70 °C | 583 W | 600 W | 88.3% of rated power | ## Against the whole database | Measure | A660-MDE72Mw | A680-MDE72Mw | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #99 | #1 | 14,005 | A680-MDE72Mw leads by 98 places | | Power density | #88 | #1 | 14,005 | A680-MDE72Mw leads by 87 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #363 | #233 | 14,005 | A680-MDE72Mw leads by 130 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #511 | #164 | 14,005 | A680-MDE72Mw leads by 347 places | ## Questions ### Which panel is better: AIKO AIKO-A660-MDE72Mw or AIKO AIKO-A680-MDE72Mw? According to our database: **AIKO AIKO-A680-MDE72Mw** has higher module efficiency (**25.20%** vs **24.40%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AIKO AIKO-A660-MDE72Mw and AIKO AIKO-A680-MDE72Mw? **AIKO AIKO-A660-MDE72Mw** has a module efficiency of **24.40%**, while **AIKO AIKO-A680-MDE72Mw** is **25.20%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AIKO AIKO-A660-MDE72Mw use vs AIKO AIKO-A680-MDE72Mw? **AIKO AIKO-A660-MDE72Mw** uses **Back Contact** cells; **AIKO AIKO-A680-MDE72Mw** 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-A660-MDE72Mw and AIKO AIKO-A680-MDE72Mw? **AIKO AIKO-A660-MDE72Mw** has a **30 years** power warranty; **AIKO AIKO-A680-MDE72Mw** 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. ## Related comparisons - [AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A675-MDE72Mw](https://comparepv.com/compare/aiko-aiko-a660-mde72mw/aiko-aiko-a675-mde72mw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A670-MDE72Mw](https://comparepv.com/compare/aiko-aiko-a660-mde72mw/aiko-aiko-a670-mde72mw) - 3 differences, the largest is module efficiency - [AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A665-MDE72Mw](https://comparepv.com/compare/aiko-aiko-a660-mde72mw/aiko-aiko-a665-mde72mw) - One difference: module efficiency - [AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A655-MDE72Mw](https://comparepv.com/compare/aiko-aiko-a660-mde72mw/aiko-aiko-a655-mde72mw) - One difference: module efficiency - [AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A805-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a660-mde72mw/aiko-aiko-a805-grh78dw) - 13 differences, the largest is module efficiency - [AIKO AIKO-A660-MDE72Mw vs AIKO AIKO-A800-GRH78Dw](https://comparepv.com/compare/aiko-aiko-a660-mde72mw/aiko-aiko-a800-grh78dw) - 13 differences, the largest is rated power --- Source: https://comparepv.com/compare/aiko-aiko-a660-mde72mw/aiko-aiko-a680-mde72mw 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.