--- title: "AE Solar AE CME-132-720 vs Gokin GK-4-78HGBD-775M - Solar Panel Comparison | ComparePV" description: "Compare AE Solar AE CME-132-720 vs Gokin GK-4-78HGBD-775M 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-132-720-1/gokin-gk-4-78hgbd-775m" updated: 2026-09-11 --- # AE Solar AE CME-132-720 vs Gokin GK-4-78HGBD-775M GK-4-78HGBD-775M leads on the differences that matter The largest is module efficiency: 0.89 pp more efficient. 2 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [AE Solar AE CME-132-720](https://comparepv.com/panel/ae-solar-ae-cme-132-720-1) | [Gokin GK-4-78HGBD-775M](https://comparepv.com/panel/gokin-gk-4-78hgbd-775m) | | Manufacturer | AE Solar | Gokin | | Power | 720 Wp | 775 Wp | | Efficiency | 23.21 % | 24.10 % | | 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-775M | Difference | | --- | --- | --- | --- | | Module efficiency | 23.21 % | 24.10 % | +0.89 pp for GK-4-78HGBD-775M | | Rated power | 720 Wp | 775 Wp | +55 W for GK-4-78HGBD-775M | | Temperature coefficient | -0.290 %/°C | -0.260 %/°C | +0.030 %/°C for GK-4-78HGBD-775M | | Power density | 232.1 Wp/m² | 241.3 Wp/m² | +9.2 Wp/m² for GK-4-78HGBD-775M | | 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 | 49.9 kg/kWp | -6.2 kg/kWp for AE CME-132-720 | | Open-circuit voltage | 49.10 V | 58.82 V | 9.72 V apart | | Module area | 3.103 m² | 3.212 m² | 0.109 m² apart | | Short-circuit current | 18.43 A | 16.71 A | 1.72 A apart | | Cell technology | TOPCon | Back Contact | TOPCon vs Back Contact | | Annual degradation | 0.40 %/yr | 0.35 %/yr | -0.05 %/yr for GK-4-78HGBD-775M | | Voltage at max power | 41.30 V | 48.87 V | 7.57 V apart | | Cell count | 132 | 156 | 24 cells apart | | Current at max power | 17.43 A | 15.86 A | 1.57 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-775M | | --- | --- | --- | | Rated power | 720 Wp | 775 Wp | | Module efficiency | 23.21 % | 24.10 % | | Power density | 232.1 Wp/m² | 241.3 Wp/m² | | Open-circuit voltage | 49.10 V | 58.82 V | | Voltage at max power | 41.30 V | 48.87 V | | Short-circuit current | 18.43 A | 16.71 A | | Current at max power | 17.43 A | 15.86 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 | 49.9 kg/kWp | | Product warranty | 30 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.35 %/yr | | Cell technology | TOPCon | Back Contact | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 156 | | Bifacial | No | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, AE CME-132-720:** 24,157 kWh - **Cumulative output, GK-4-78HGBD-775M:** 26,205 kWh - **Gap:** 2,048 kWh ## Output when hot | Condition | Cell temperature | AE CME-132-720 | GK-4-78HGBD-775M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 720 W | 775 W | 100.0% of rated power | | Cool, bright day | 40 °C | 689 W | 745 W | 95.7% of rated power | | Typical summer roof | 55 °C | 657 W | 715 W | 91.3% of rated power | | Hot roof | 70 °C | 626 W | 684 W | 87.0% of rated power | ## Against the whole database | Measure | AE CME-132-720 | GK-4-78HGBD-775M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,299 | #219 | 14,005 | GK-4-78HGBD-775M leads by 1,080 places | | Power density | #1,339 | #227 | 14,005 | GK-4-78HGBD-775M leads by 1,112 places | | Heat behaviour | #2,165 | #511 | 14,005 | GK-4-78HGBD-775M leads by 1,654 places | | Weight | #336 | #3,297 | 14,005 | AE CME-132-720 leads by 2,961 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #19 | #29 | 14,005 | AE CME-132-720 leads by 10 places | ## Questions ### Which panel is better: AE Solar AE CME-132-720 or Gokin GK-4-78HGBD-775M? According to our database: **Gokin GK-4-78HGBD-775M** has higher module efficiency (**24.10%** vs **23.21%**); **Gokin GK-4-78HGBD-775M** 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-775M? **AE Solar AE CME-132-720** has a module efficiency of **23.21%**, while **Gokin GK-4-78HGBD-775M** is **24.10%**. 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-775M? **AE Solar AE CME-132-720** uses **TOPCon** cells; **Gokin GK-4-78HGBD-775M** 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-775M? **AE Solar AE CME-132-720** has a **30 years** power warranty; **Gokin GK-4-78HGBD-775M** 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-775M bifacial panels? **Gokin GK-4-78HGBD-775M** 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-132-720-1/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-132-720-1/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-132-720-1/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-132-720-1/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-132-720-1/ae-solar-cme-132bds-725w) - 4 differences, the largest is weight - [AE Solar AE CME-132-720 vs AE Solar AE CME-132 720](https://comparepv.com/compare/ae-solar-ae-cme-132-720-1/ae-solar-ae-cme-132-720) - The same specification on paper --- Source: https://comparepv.com/compare/ae-solar-ae-cme-132-720-1/gokin-gk-4-78hgbd-775m 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.