--- title: "AE Solar AE CME-132 720 vs Gokin GK-4-78HGBD-780M - Solar Panel Comparison | ComparePV" description: "Compare AE Solar AE CME-132 720 vs Gokin GK-4-78HGBD-780M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ae-solar-ae-cme-132-720/gokin-gk-4-78hgbd-780m" updated: 2026-09-11 --- # AE Solar AE CME-132 720 vs Gokin GK-4-78HGBD-780M GK-4-78HGBD-780M leads on the differences that matter The largest is module efficiency: 1.09 pp more efficient. 2 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 | [AE Solar AE CME-132 720](https://comparepv.com/panel/ae-solar-ae-cme-132-720) | [Gokin GK-4-78HGBD-780M](https://comparepv.com/panel/gokin-gk-4-78hgbd-780m) | | Manufacturer | AE Solar | Gokin | | Power | 720 Wp | 780 Wp | | Efficiency | 23.21 % | 24.30 % | | Technology | TOPCon | Back Contact | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | AE CME-132 720 | GK-4-78HGBD-780M | Difference | | --- | --- | --- | --- | | Module efficiency | 23.21 % | 24.30 % | +1.09 pp for GK-4-78HGBD-780M | | Rated power | 720 Wp | 780 Wp | +60 W for GK-4-78HGBD-780M | | Temperature coefficient | -0.290 %/°C | -0.260 %/°C | +0.030 %/°C for GK-4-78HGBD-780M | | Power density | 232.1 Wp/m² | 242.8 Wp/m² | +10.8 Wp/m² for GK-4-78HGBD-780M | | Weight | 31.5 kg | 38.7 kg | -7.2 kg for AE CME-132 720 | | Product warranty | 30 yrs | 15 yrs | +15 yrs for AE CME-132 720 | | Weight per kWp | 43.8 kg/kWp | 49.6 kg/kWp | -5.9 kg/kWp for AE CME-132 720 | | Open-circuit voltage | 49.10 V | 58.92 V | 9.82 V apart | | Module area | 3.103 m² | 3.212 m² | 0.109 m² apart | | Short-circuit current | 18.43 A | 16.78 A | 1.65 A apart | | Cell technology | TOPCon | Back Contact | TOPCon vs Back Contact | | Voltage at max power | 41.30 V | 48.97 V | 7.67 V apart | | Cell count | 132 | 156 | 24 cells apart | | Current at max power | 17.43 A | 15.93 A | 1.50 A apart | | Bifacial | No | Yes | No vs Yes | | Dimensions | 2383x1302x30 mm | 2465x1303x33 mm | 2383x1302x30 mm vs 2465x1303x33 mm | ## Every compared parameter | Parameter | AE CME-132 720 | GK-4-78HGBD-780M | | --- | --- | --- | | Rated power | 720 Wp | 780 Wp | | Module efficiency | 23.21 % | 24.30 % | | Power density | 232.1 Wp/m² | 242.8 Wp/m² | | Open-circuit voltage | 49.10 V | 58.92 V | | Voltage at max power | 41.30 V | 48.97 V | | Short-circuit current | 18.43 A | 16.78 A | | Current at max power | 17.43 A | 15.93 A | | Temperature coefficient | -0.290 %/°C | -0.260 %/°C | | Dimensions | 2383x1302x30 mm | 2465x1303x33 mm | | Module area | 3.103 m² | 3.212 m² | | Weight | 31.5 kg | 38.7 kg | | Weight per kWp | 43.8 kg/kWp | 49.6 kg/kWp | | Product warranty | 30 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | 0.35 %/yr | | Cell technology | TOPCon | Back Contact | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 156 | | Bifacial | No | Yes | ## Thirty-year yield Declared first-year losses, with 0.40% a year afterwards assumed for both panels, at 1,200 kWh/kWp a year - **Cumulative output, AE CME-132 720:** 24,157 kWh - **Cumulative output, GK-4-78HGBD-780M:** 26,171 kWh - **Gap:** 2,014 kWh ## Output when hot | Condition | Cell temperature | AE CME-132 720 | GK-4-78HGBD-780M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 720 W | 780 W | 100.0% of rated power | | Cool, bright day | 40 °C | 689 W | 750 W | 95.7% of rated power | | Typical summer roof | 55 °C | 657 W | 719 W | 91.3% of rated power | | Hot roof | 70 °C | 626 W | 689 W | 87.0% of rated power | ## Against the whole database | Measure | AE CME-132 720 | GK-4-78HGBD-780M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,299 | #131 | 14,005 | GK-4-78HGBD-780M leads by 1,168 places | | Power density | #1,339 | #138 | 14,005 | GK-4-78HGBD-780M leads by 1,201 places | | Heat behaviour | #2,165 | #511 | 14,005 | GK-4-78HGBD-780M leads by 1,654 places | | Weight | #336 | #3,161 | 14,005 | AE CME-132 720 leads by 2,825 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #19 | #15 | 14,005 | GK-4-78HGBD-780M leads by 4 places | ## Questions ### Which panel is better: AE Solar AE CME-132 720 or Gokin GK-4-78HGBD-780M? According to our database: **Gokin GK-4-78HGBD-780M** has higher module efficiency (**24.30%** vs **23.21%**); **Gokin GK-4-78HGBD-780M** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.290%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AE Solar AE CME-132 720 and Gokin GK-4-78HGBD-780M? **AE Solar AE CME-132 720** has a module efficiency of **23.21%**, while **Gokin GK-4-78HGBD-780M** is **24.30%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AE Solar AE CME-132 720 use vs Gokin GK-4-78HGBD-780M? **AE Solar AE CME-132 720** uses **TOPCon** cells; **Gokin GK-4-78HGBD-780M** 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 AE Solar AE CME-132 720 and Gokin GK-4-78HGBD-780M? **AE Solar AE CME-132 720** has a **30 years** power warranty; **Gokin GK-4-78HGBD-780M** 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 AE Solar AE CME-132 720 and Gokin GK-4-78HGBD-780M bifacial panels? **Gokin GK-4-78HGBD-780M** is bifacial (captures light from both faces); **AE Solar AE CME-132 720** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [AE Solar AE CME-132 720 vs AE Solar CME-132BDS-730](https://comparepv.com/compare/ae-solar-ae-cme-132-720/ae-solar-cme-132bds-730) - 6 differences, the largest is weight - [AE Solar AE CME-132 720 vs AE Solar CME-132BDS-730W](https://comparepv.com/compare/ae-solar-ae-cme-132-720/ae-solar-cme-132bds-730w) - 7 differences, the largest is weight - [AE Solar AE CME-132 720 vs AE Solar CME-132BDS-725](https://comparepv.com/compare/ae-solar-ae-cme-132-720/ae-solar-cme-132bds-725) - 3 differences, the largest is weight - [AE Solar AE CME-132 720 vs AE Solar CME-132-725W](https://comparepv.com/compare/ae-solar-ae-cme-132-720/ae-solar-cme-132-725w) - One difference: product warranty - [AE Solar AE CME-132 720 vs AE Solar CME-132BDS-725W](https://comparepv.com/compare/ae-solar-ae-cme-132-720/ae-solar-cme-132bds-725w) - 4 differences, the largest is weight - [AE Solar AE CME-132 720 vs AE Solar CME-132BDS-720](https://comparepv.com/compare/ae-solar-ae-cme-132-720/ae-solar-cme-132bds-720) - 3 differences, the largest is weight --- Source: https://comparepv.com/compare/ae-solar-ae-cme-132-720/gokin-gk-4-78hgbd-780m 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.