--- title: "Phono Solar NS-660MH-132 vs Phono Solar NS-700MH-132 - Solar Panel Comparison | ComparePV" description: "Compare Phono Solar NS-660MH-132 vs Phono Solar NS-700MH-132 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-700mh-132" image: "https://comparepv.com/og/compare/panels/phono-solar-ns-660mh-132/phono-solar-ns-700mh-132.png" updated: 2026-09-11 --- # Phono Solar NS-660MH-132 vs Phono Solar NS-700MH-132 700MH-132 leads on the differences that matter The largest is module efficiency: 1.29 pp more efficient. 8 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 | [Phono Solar NS-660MH-132](https://comparepv.com/panel/phono-solar-ns-660mh-132) | [Phono Solar NS-700MH-132](https://comparepv.com/panel/phono-solar-ns-700mh-132) | | Manufacturer | Phono Solar | Phono Solar | | Power | 660 Wp | 700 Wp | | Efficiency | 21.24 % | 22.53 % | | Technology | TOPCon | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 660MH-132 | 700MH-132 | Difference | | --- | --- | --- | --- | | Module efficiency | 21.24 % | 22.53 % | +1.29 pp for 700MH-132 | | Rated power | 660 Wp | 700 Wp | +40 W for 700MH-132 | | Power density | 212.5 Wp/m² | 225.3 Wp/m² | +12.9 Wp/m² for 700MH-132 | | Performance warranty | 30 yrs | 25 yrs | +5 yrs for 660MH-132 | | Weight | 38.7 kg | 34.0 kg | -4.7 kg for 700MH-132 | | Weight per kWp | 58.6 kg/kWp | 48.6 kg/kWp | -10.1 kg/kWp for 700MH-132 | | Open-circuit voltage | 45.40 V | 49.68 V | 4.28 V apart | | Cell technology | TOPCon | N-type | TOPCon vs N-type | | Short-circuit current | 18.63 A | 17.61 A | 1.02 A apart | | Voltage at max power | 38.30 V | 41.29 V | 2.99 V apart | ## Every compared parameter | Parameter | 660MH-132 | 700MH-132 | | --- | --- | --- | | Rated power | 660 Wp | 700 Wp | | Module efficiency | 21.24 % | 22.53 % | | Power density | 212.5 Wp/m² | 225.3 Wp/m² | | Open-circuit voltage | 45.40 V | 49.68 V | | Voltage at max power | 38.30 V | 41.29 V | | Short-circuit current | 18.63 A | 17.61 A | | Current at max power | 17.24 A | 16.96 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2384x1303x30 mm | 2384x1303x30 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 38.7 kg | 34.0 kg | | Weight per kWp | 58.6 kg/kWp | 48.6 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 25 yrs | | Annual degradation | - | - | | Cell technology | TOPCon | N-type | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | Bifacial | No | No | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.290 %/°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, 660MH-132:** 22,144 kWh - **Cumulative output, 700MH-132:** 23,486 kWh - **Gap:** 1,342 kWh ## Output when hot | Condition | Cell temperature | 660MH-132 | 700MH-132 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 660 W | 700 W | 100.0% of rated power | | Cool, bright day | 40 °C | 631 W | 670 W | 95.7% of rated power | | Typical summer roof | 55 °C | 603 W | 639 W | 91.3% of rated power | | Hot roof | 70 °C | 574 W | 609 W | 87.0% of rated power | ## Against the whole database | Measure | 660MH-132 | 700MH-132 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #9,103 | #4,041 | 14,129 | 700MH-132 leads by 5,062 places | | Power density | #9,028 | #4,048 | 14,129 | 700MH-132 leads by 4,980 places | | Heat behaviour | #2,220 | #2,220 | 14,129 | Tied - the same position in the database | | Weight | #11,906 | #2,360 | 14,129 | 700MH-132 leads by 9,546 places | | Warranty | #21 | #9,912 | 14,129 | 660MH-132 leads by 9,891 places | | Overall | #2,617 | #1,370 | 14,129 | 700MH-132 leads by 1,247 places | ## Questions ### Which panel is better: Phono Solar NS-660MH-132 or Phono Solar NS-700MH-132? According to our database: **Phono Solar NS-700MH-132** has higher module efficiency (**22.53%** vs **21.24%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Phono Solar NS-660MH-132 and Phono Solar NS-700MH-132? **Phono Solar NS-660MH-132** has a module efficiency of **21.24%**, while **Phono Solar NS-700MH-132** is **22.53%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Phono Solar NS-660MH-132 use vs Phono Solar NS-700MH-132? **Phono Solar NS-660MH-132** uses **TOPCon** cells; **Phono Solar NS-700MH-132** uses **N-type**. 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 Phono Solar NS-660MH-132 and Phono Solar NS-700MH-132? **Phono Solar NS-660MH-132** has a **30 years** power warranty; **Phono Solar NS-700MH-132** has a **25 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 - [Phono Solar NS-660MH-132 vs Phono Solar NS-730MH-132](https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-730mh-132) - 9 differences, the largest is module efficiency - [Phono Solar NS-660MH-132 vs Phono Solar NS-720MH-132](https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-720mh-132) - 10 differences, the largest is module efficiency - [Phono Solar NS-660MH-132 vs Phono Solar NS-710MH-132](https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-710mh-132) - 10 differences, the largest is module efficiency - [Phono Solar NS-660MH-132 vs Phono Solar NS-690MH-132](https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-690mh-132) - 10 differences, the largest is module efficiency - [Phono Solar NS-660MH-132 vs Phono Solar NS-670MH-132](https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-670mh-132) - 3 differences, the largest is module efficiency - [Phono Solar NS-660MH-132 vs Phono Solar NS-665MH-132](https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-665mh-132) - The same specification on paper --- Source: https://comparepv.com/compare/phono-solar-ns-660mh-132/phono-solar-ns-700mh-132 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.