--- title: "Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-640 - Solar Panel Comparison | ComparePV" description: "Compare Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-640 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-640" updated: 2026-09-11 --- # Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-640 Identical on every published parameter All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Adani Solar AB-G12R-132-635](https://comparepv.com/panel/adani-solar-ab-g12r-132-635) | [Adani Solar AB-G12R-132-640](https://comparepv.com/panel/adani-solar-ab-g12r-132-640) | | Manufacturer | Adani Solar | Adani Solar | | Power | 635 Wp | 640 Wp | | Efficiency | 23.53 % | 23.71 % | | Technology | TOPCon | TOPCon | ## Every compared parameter | Parameter | 635 | 640 | | --- | --- | --- | | Rated power | 635 Wp | 640 Wp | | Module efficiency | 23.53 % | 23.71 % | | Power density | 235.3 Wp/m² | 237.1 Wp/m² | | Open-circuit voltage | 48.93 V | 49.06 V | | Voltage at max power | 41.88 V | 42.00 V | | Short-circuit current | 16.01 A | 16.09 A | | Current at max power | 15.18 A | 15.26 A | | Temperature coefficient | -0.280 %/°C | -0.280 %/°C | | Dimensions | 2382x1133x30 mm | 2382x1133x30 mm | | Module area | 2.699 m² | 2.699 m² | | Weight | 33.6 kg | 33.6 kg | | Weight per kWp | 52.9 kg/kWp | 52.5 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.280 %/°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, 635:** 21,306 kWh - **Cumulative output, 640:** 21,473 kWh - **Gap:** 167 kWh ## Output when hot | Condition | Cell temperature | 635 | 640 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 635 W | 640 W | 100.0% of rated power | | Cool, bright day | 40 °C | 608 W | 613 W | 95.8% of rated power | | Typical summer roof | 55 °C | 582 W | 586 W | 91.6% of rated power | | Hot roof | 70 °C | 555 W | 559 W | 87.4% of rated power | ## Against the whole database | Measure | 635 | 640 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #674 | #516 | 14,005 | 640 leads by 158 places | | Power density | #671 | #516 | 14,005 | 640 leads by 155 places | | Heat behaviour | #1,309 | #1,309 | 14,005 | Tied - the same position in the database | | Weight | #6,627 | #6,043 | 14,005 | 640 leads by 584 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1,738 | #1,529 | 14,005 | 640 leads by 209 places | ## Questions ### Which panel is better: Adani Solar AB-G12R-132-635 or Adani Solar AB-G12R-132-640? According to our database: **Adani Solar AB-G12R-132-640** has higher module efficiency (**23.71%** vs **23.53%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Adani Solar AB-G12R-132-635 and Adani Solar AB-G12R-132-640? **Adani Solar AB-G12R-132-635** has a module efficiency of **23.53%**, while **Adani Solar AB-G12R-132-640** is **23.71%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Adani Solar AB-G12R-132-635 use vs Adani Solar AB-G12R-132-640? **Adani Solar AB-G12R-132-635** uses **TOPCon** cells; **Adani Solar AB-G12R-132-640** uses **TOPCon**. 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 Adani Solar AB-G12R-132-635 and Adani Solar AB-G12R-132-640? **Adani Solar AB-G12R-132-635** has a **30 years** power warranty; **Adani Solar AB-G12R-132-640** 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 Adani Solar AB-G12R-132-635 and Adani Solar AB-G12R-132-640 bifacial panels? Both **Adani Solar AB-G12R-132-635** and **Adani Solar AB-G12R-132-640** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-630](https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-630) - The same specification on paper - [Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-625](https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-625) - 3 differences, the largest is module efficiency - [Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-620](https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-620) - 3 differences, the largest is module efficiency - [Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-615](https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-615) - 3 differences, the largest is module efficiency - [Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-610](https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-610) - 4 differences, the largest is module efficiency - [Adani Solar AB-G12R-132-635 vs Adani Solar AB-G12R-132-605](https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-605) - 5 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/adani-solar-ab-g12r-132-635/adani-solar-ab-g12r-132-640 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.