--- title: "Adani Solar ASM-M12-132-635 vs Adani Solar ASM-M12-132-645 - Solar Panel Comparison | ComparePV" description: "Compare Adani Solar ASM-M12-132-635 vs Adani Solar ASM-M12-132-645 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-asm-m12-132-635/adani-solar-asm-m12-132-645" updated: 2026-09-11 --- # Adani Solar ASM-M12-132-635 vs Adani Solar ASM-M12-132-645 645 leads on the differences that matter The largest is module efficiency: 0.32 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Adani Solar ASM-M12-132-635](https://comparepv.com/panel/adani-solar-asm-m12-132-635) | [Adani Solar ASM-M12-132-645](https://comparepv.com/panel/adani-solar-asm-m12-132-645) | | Manufacturer | Adani Solar | Adani Solar | | Power | 635 Wp | 645 Wp | | Efficiency | 20.39 % | 20.71 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 635 | 645 | Difference | | --- | --- | --- | --- | | Module efficiency | 20.39 % | 20.71 % | +0.32 pp for 645 | | Power density | 203.9 Wp/m² | 207.1 Wp/m² | +3.2 Wp/m² for 645 | | Rated power | 635 Wp | 645 Wp | +10 W for 645 | ## Every compared parameter | Parameter | 635 | 645 | | --- | --- | --- | | Rated power | 635 Wp | 645 Wp | | Module efficiency | 20.39 % | 20.71 % | | Power density | 203.9 Wp/m² | 207.1 Wp/m² | | Open-circuit voltage | 43.08 V | 43.47 V | | Voltage at max power | 36.82 V | 37.15 V | | Short-circuit current | 18.63 A | 18.75 A | | Current at max power | 17.25 A | 17.37 A | | Temperature coefficient | -0.340 %/°C | -0.340 %/°C | | Dimensions | 2390x1303x35 mm | 2390x1303x35 mm | | Module area | 3.114 m² | 3.114 m² | | Weight | 33.6 kg | 33.6 kg | | Weight per kWp | 52.9 kg/kWp | 52.1 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.55 %/yr | 0.55 %/yr | | Cell technology | PERC | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | 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 (-0.340 %/°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:** 20,580 kWh - **Cumulative output, 645:** 20,904 kWh - **Gap:** 324 kWh ## Output when hot | Condition | Cell temperature | 635 | 645 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 635 W | 645 W | 100.0% of rated power | | Cool, bright day | 40 °C | 603 W | 612 W | 94.9% of rated power | | Typical summer roof | 55 °C | 570 W | 579 W | 89.8% of rated power | | Hot roof | 70 °C | 538 W | 546 W | 84.7% of rated power | ## Against the whole database | Measure | 635 | 645 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #11,683 | #10,721 | 14,005 | 645 leads by 962 places | | Power density | #11,623 | #10,759 | 14,005 | 645 leads by 864 places | | Heat behaviour | #8,778 | #8,778 | 14,005 | Tied - the same position in the database | | Weight | #6,627 | #5,539 | 14,005 | 645 leads by 1,088 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,963 | #4,257 | 14,005 | 645 leads by 706 places | ## Questions ### Which panel is better: Adani Solar ASM-M12-132-635 or Adani Solar ASM-M12-132-645? According to our database: **Adani Solar ASM-M12-132-645** has higher module efficiency (**20.71%** vs **20.39%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Adani Solar ASM-M12-132-635 and Adani Solar ASM-M12-132-645? **Adani Solar ASM-M12-132-635** has a module efficiency of **20.39%**, while **Adani Solar ASM-M12-132-645** is **20.71%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Adani Solar ASM-M12-132-635 use vs Adani Solar ASM-M12-132-645? **Adani Solar ASM-M12-132-635** uses **PERC** cells; **Adani Solar ASM-M12-132-645** uses **PERC**. 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 ASM-M12-132-635 and Adani Solar ASM-M12-132-645? **Adani Solar ASM-M12-132-635** has a **30 years** power warranty; **Adani Solar ASM-M12-132-645** 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 - [Adani Solar ASM-M12-132-635 vs Adani Solar ASM-M12-132-650](https://comparepv.com/compare/adani-solar-asm-m12-132-635/adani-solar-asm-m12-132-650) - 3 differences, the largest is module efficiency - [Adani Solar ASM-M12-132-635 vs Adani Solar ASM-M12-132-640](https://comparepv.com/compare/adani-solar-asm-m12-132-635/adani-solar-asm-m12-132-640) - The same specification on paper - [Adani Solar ASM-M12-132-635 vs Adani Solar ASM-M12-132-630](https://comparepv.com/compare/adani-solar-asm-m12-132-635/adani-solar-asm-m12-132-630) - The same specification on paper - [Adani Solar ASM-M12-132-635 vs Adani Solar ASB-M12-132-650](https://comparepv.com/compare/adani-solar-asm-m12-132-635/adani-solar-asb-m12-132-650) - 5 differences, the largest is module efficiency - [Adani Solar ASM-M12-132-635 vs Adani Solar ASB-M12-132-645](https://comparepv.com/compare/adani-solar-asm-m12-132-635/adani-solar-asb-m12-132-645) - 5 differences, the largest is module efficiency - [Adani Solar ASM-M12-132-635 vs Adani Solar ASB-M12-132-640](https://comparepv.com/compare/adani-solar-asm-m12-132-635/adani-solar-asb-m12-132-640) - 2 differences, the largest is temperature coefficient --- Source: https://comparepv.com/compare/adani-solar-asm-m12-132-635/adani-solar-asm-m12-132-645 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.