--- title: "Trina Solar TSM-NE21 725W vs Trina Solar TSM-NEG21C.20Q-760 - Solar Panel Comparison | ComparePV" description: "Compare Trina Solar TSM-NE21 725W vs Trina Solar TSM-NEG21C.20Q-760 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-tsm-neg21c-20q-760" updated: 2026-09-11 --- # Trina Solar TSM-NE21 725W vs Trina Solar TSM-NEG21C.20Q-760 NEG21C.20Q-760 leads on the differences that matter The largest is module efficiency: 1.20 pp more efficient. 7 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Trina Solar TSM-NE21 725W](https://comparepv.com/panel/trina-solar-co-ltd-tsm-ne21-725w) | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | | Manufacturer | Trina Solar | Trina Solar | | Power | 725 Wp | 760 Wp | | Efficiency | 23.30 % | 24.50 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | NE21 725W | NEG21C.20Q-760 | Difference | | --- | --- | --- | --- | | Module efficiency | 23.30 % | 24.50 % | +1.20 pp for NEG21C.20Q-760 | | Performance warranty | 25 yrs | 30 yrs | +5 yrs for NEG21C.20Q-760 | | Power density | 233.4 Wp/m² | 244.7 Wp/m² | +11.3 Wp/m² for NEG21C.20Q-760 | | Temperature coefficient | -0.290 %/°C | -0.260 %/°C | +0.030 %/°C for NEG21C.20Q-760 | | Rated power | 725 Wp | 760 Wp | +35 W for NEG21C.20Q-760 | | Weight | 32.9 kg | 38.3 kg | -5.4 kg for NE21 725W | | Weight per kWp | 45.4 kg/kWp | 50.4 kg/kWp | -5.0 kg/kWp for NE21 725W | | Annual degradation | 0.40 %/yr | 0.35 %/yr | -0.05 %/yr for NEG21C.20Q-760 | | Cell count | 132 | 264 | 132 cells apart | | Bifacial | No | Yes | No vs Yes | | Open-circuit voltage | 49.70 V | 50.90 V | 1.20 V apart | | Voltage at max power | 41.50 V | 42.90 V | 1.40 V apart | ## Every compared parameter | Parameter | NE21 725W | NEG21C.20Q-760 | | --- | --- | --- | | Rated power | 725 Wp | 760 Wp | | Module efficiency | 23.30 % | 24.50 % | | Power density | 233.4 Wp/m² | 244.7 Wp/m² | | Open-circuit voltage | 49.70 V | 50.90 V | | Voltage at max power | 41.50 V | 42.90 V | | Short-circuit current | 18.49 A | 18.85 A | | Current at max power | 17.47 A | 17.72 A | | Temperature coefficient | -0.290 %/°C | -0.260 %/°C | | Dimensions | 2384x1303x33 mm | 2384x1303x33 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 32.9 kg | 38.3 kg | | Weight per kWp | 45.4 kg/kWp | 50.4 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 25 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.35 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 264 | | Bifacial | No | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, NE21 725W:** 24,325 kWh - **Cumulative output, NEG21C.20Q-760:** 25,698 kWh - **Gap:** 1,373 kWh ## Output when hot | Condition | Cell temperature | NE21 725W | NEG21C.20Q-760 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 725 W | 760 W | 100.0% of rated power | | Cool, bright day | 40 °C | 693 W | 730 W | 95.7% of rated power | | Typical summer roof | 55 °C | 662 W | 701 W | 91.3% of rated power | | Hot roof | 70 °C | 630 W | 671 W | 87.0% of rated power | ## Against the whole database | Measure | NE21 725W | NEG21C.20Q-760 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,017 | #74 | 14,005 | NEG21C.20Q-760 leads by 943 places | | Power density | #936 | #86 | 14,005 | NEG21C.20Q-760 leads by 850 places | | Heat behaviour | #2,165 | #511 | 14,005 | NEG21C.20Q-760 leads by 1,654 places | | Weight | #717 | #3,780 | 14,005 | NE21 725W leads by 3,063 places | | Warranty | #9,798 | #21 | 14,005 | NEG21C.20Q-760 leads by 9,777 places | | Overall | #794 | #66 | 14,005 | NEG21C.20Q-760 leads by 728 places | ## Questions ### Which panel is better: Trina Solar TSM-NE21 725W or Trina Solar TSM-NEG21C.20Q-760? According to our database: **Trina Solar TSM-NEG21C.20Q-760** has higher module efficiency (**24.50%** vs **23.30%**); **Trina Solar TSM-NEG21C.20Q-760** 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 Trina Solar TSM-NE21 725W and Trina Solar TSM-NEG21C.20Q-760? **Trina Solar TSM-NE21 **725 W**** has a module efficiency of **23.30%**, while **Trina Solar TSM-NEG21C.20Q-760** is **24.50%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Trina Solar TSM-NE21 725W use vs Trina Solar TSM-NEG21C.20Q-760? **Trina Solar TSM-NE21 **725 W**** uses **TOPCon** cells; **Trina Solar TSM-NEG21C.20Q-760** 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 Trina Solar TSM-NE21 725W and Trina Solar TSM-NEG21C.20Q-760? **Trina Solar TSM-NE21 **725 W**** has a **25 years** power warranty; **Trina Solar TSM-NEG21C.20Q-760** 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 Trina Solar TSM-NE21 725W and Trina Solar TSM-NEG21C.20Q-760 bifacial panels? **Trina Solar TSM-NEG21C.20Q-760** is bifacial (captures light from both faces); **Trina Solar TSM-NE21 **725 W**** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 720W](https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-co-ltd-tsm-ne21-720w) - The same specification on paper - [Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 715W](https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-co-ltd-tsm-ne21-715w) - 3 differences, the largest is module efficiency - [Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 710W](https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-co-ltd-tsm-ne21-710w) - 3 differences, the largest is module efficiency - [Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 705W](https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-co-ltd-tsm-ne21-705w) - 3 differences, the largest is module efficiency - [Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 700W](https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-co-ltd-tsm-ne21-700w) - 5 differences, the largest is module efficiency - [Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 695W](https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-co-ltd-tsm-ne21-695w) - 5 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/trina-solar-co-ltd-tsm-ne21-725w/trina-solar-tsm-neg21c-20q-760 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.