--- title: "Adani Solar AB-G12R-132-615 vs Adani Solar AB-G12R-132-640 - Solar Panel Comparison | ComparePV" description: "Compare Adani Solar AB-G12R-132-615 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-132-615/adani-solar-ab-g12r-132-640" updated: 2026-09-11 --- # Adani Solar AB-G12R-132-615 vs Adani Solar AB-G12R-132-640 640 leads on the differences that matter The largest is module efficiency: 0.92 pp more efficient. 15 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Adani Solar AB-G12R-132-615](https://comparepv.com/panel/adani-solar-ab-g12r-132-615) | [Adani Solar AB-G12R-132-640](https://comparepv.com/panel/adani-solar-ab-g12r-132-640) | | Manufacturer | Adani Solar | Adani Solar | | Power | 615 Wp | 640 Wp | | Efficiency | 22.79 % | 23.71 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 615 | 640 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.79 % | 23.71 % | +0.92 pp for 640 | | Power density | 227.9 Wp/m² | 237.1 Wp/m² | +9.3 Wp/m² for 640 | | Rated power | 615 Wp | 640 Wp | +25 W for 640 | | Weight per kWp | 54.6 kg/kWp | 52.5 kg/kWp | -2.1 kg/kWp for 640 | ## Every compared parameter | Parameter | 615 | 640 | | --- | --- | --- | | Rated power | 615 Wp | 640 Wp | | Module efficiency | 22.79 % | 23.71 % | | Power density | 227.9 Wp/m² | 237.1 Wp/m² | | Open-circuit voltage | 48.40 V | 49.06 V | | Voltage at max power | 41.14 V | 42.00 V | | Short-circuit current | 15.90 A | 16.09 A | | Current at max power | 14.96 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 | 54.6 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, 615:** 20,634 kWh - **Cumulative output, 640:** 21,473 kWh - **Gap:** 839 kWh ## Output when hot | Condition | Cell temperature | 615 | 640 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 615 W | 640 W | 100.0% of rated power | | Cool, bright day | 40 °C | 589 W | 613 W | 95.8% of rated power | | Typical summer roof | 55 °C | 563 W | 586 W | 91.6% of rated power | | Hot roof | 70 °C | 538 W | 559 W | 87.4% of rated power | ## Against the whole database | Measure | 615 | 640 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3,005 | #516 | 14,005 | 640 leads by 2,489 places | | Power density | #2,856 | #516 | 14,005 | 640 leads by 2,340 places | | Heat behaviour | #1,309 | #1,309 | 14,005 | Tied - the same position in the database | | Weight | #8,999 | #6,043 | 14,005 | 640 leads by 2,956 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,941 | #1,529 | 14,005 | 640 leads by 1,412 places | ## Questions ### Which panel is better: Adani Solar AB-G12R-132-615 or Adani Solar AB-G12R-132-640? According to our database: **Adani Solar AB-G12R-132-640** has higher module efficiency (**23.71%** vs **22.79%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Adani Solar AB-G12R-132-615 and Adani Solar AB-G12R-132-640? **Adani Solar AB-G12R-132-615** has a module efficiency of **22.79%**, 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-132-615 use vs Adani Solar AB-G12R-132-640? **Adani Solar AB-G12R-132-615** 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-132-615 and Adani Solar AB-G12R-132-640? **Adani Solar AB-G12R-132-615** 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-132-615 and Adani Solar AB-G12R-132-640 bifacial panels? Both **Adani Solar AB-G12R-132-615** 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-132-615 vs Adani Solar AB-G12R-132-635](https://comparepv.com/compare/adani-solar-ab-g12r-132-615/adani-solar-ab-g12r-132-635) - 3 differences, the largest is module efficiency - [Adani Solar AB-G12R-132-615 vs Adani Solar AB-G12R-132-630](https://comparepv.com/compare/adani-solar-ab-g12r-132-615/adani-solar-ab-g12r-132-630) - 3 differences, the largest is module efficiency - [Adani Solar AB-G12R-132-615 vs Adani Solar AB-G12R-132-625](https://comparepv.com/compare/adani-solar-ab-g12r-132-615/adani-solar-ab-g12r-132-625) - 3 differences, the largest is module efficiency - [Adani Solar AB-G12R-132-615 vs Adani Solar AB-G12R-132-620](https://comparepv.com/compare/adani-solar-ab-g12r-132-615/adani-solar-ab-g12r-132-620) - The same specification on paper - [Adani Solar AB-G12R-132-615 vs Adani Solar AB-G12R-132-610](https://comparepv.com/compare/adani-solar-ab-g12r-132-615/adani-solar-ab-g12r-132-610) - The same specification on paper - [Adani Solar AB-G12R-132-615 vs Adani Solar AB-G12R-132-605](https://comparepv.com/compare/adani-solar-ab-g12r-132-615/adani-solar-ab-g12r-132-605) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/adani-solar-ab-g12r-132-615/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.