--- title: "Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-470NED9R.28 - Solar Panel Comparison | ComparePV" description: "Compare Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-470NED9R.28 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-neg9r-28-460w-1/trina-solar-tsm-470ned9r-28" updated: 2026-09-11 --- # Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-470NED9R.28 6 differences, and they point both ways The largest is module efficiency: 0.50 pp more efficient. 13 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Trina Solar TSM-NEG9R.28 460W](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg9r-28-460w-1) | [Trina Solar TSM-470NED9R.28](https://comparepv.com/panel/trina-solar-tsm-470ned9r-28) | | Manufacturer | Trina Solar | Trina Solar | | Power | 460 Wp | 470 Wp | | Efficiency | 23.00 % | 23.50 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | NEG9R.28 460W | 470NED9R.28 | Difference | | --- | --- | --- | --- | | Module efficiency | 23.00 % | 23.50 % | +0.50 pp for 470NED9R.28 | | Weight | 21.0 kg | 27.0 kg | -6.0 kg for NEG9R.28 460W | | Weight per kWp | 45.7 kg/kWp | 57.4 kg/kWp | -11.8 kg/kWp for NEG9R.28 460W | | Power density | 230.2 Wp/m² | 235.2 Wp/m² | +5.0 Wp/m² for 470NED9R.28 | | Rated power | 460 Wp | 470 Wp | +10 W for 470NED9R.28 | | Bifacial | No | Yes | No vs Yes | ## Every compared parameter | Parameter | NEG9R.28 460W | 470NED9R.28 | | --- | --- | --- | | Rated power | 460 Wp | 470 Wp | | Module efficiency | 23.00 % | 23.50 % | | Power density | 230.2 Wp/m² | 235.2 Wp/m² | | Open-circuit voltage | 53.80 V | 54.60 V | | Voltage at max power | 45.40 V | 46.10 V | | Short-circuit current | 10.81 A | 10.89 A | | Current at max power | 10.14 A | 10.20 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 21.0 kg | 27.0 kg | | Weight per kWp | 45.7 kg/kWp | 57.4 kg/kWp | | Product warranty | 15 yrs | 15 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 | 144 | 144 | | Bifacial | No | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.290 %/°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, NEG9R.28 460W:** 15,434 kWh - **Cumulative output, 470NED9R.28:** 15,769 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | NEG9R.28 460W | 470NED9R.28 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 460 W | 470 W | 100.0% of rated power | | Cool, bright day | 40 °C | 440 W | 450 W | 95.7% of rated power | | Typical summer roof | 55 °C | 420 W | 429 W | 91.3% of rated power | | Hot roof | 70 °C | 400 W | 409 W | 87.0% of rated power | ## Against the whole database | Measure | NEG9R.28 460W | 470NED9R.28 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,919 | #716 | 14,005 | 470NED9R.28 leads by 1,203 places | | Power density | #1,876 | #674 | 14,005 | 470NED9R.28 leads by 1,202 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #805 | #11,218 | 14,005 | NEG9R.28 460W leads by 10,413 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #7,286 | #6,529 | 14,005 | 470NED9R.28 leads by 757 places | ## Questions ### Which panel is better: Trina Solar TSM-NEG9R.28 460W or Trina Solar TSM-470NED9R.28? According to our database: **Trina Solar TSM-470NED9R.28** has higher module efficiency (**23.50%** vs **23.00%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Trina Solar TSM-NEG9R.28 460W and Trina Solar TSM-470NED9R.28? **Trina Solar TSM-NEG9R.28 **460 W**** has a module efficiency of **23.00%**, while **Trina Solar TSM-470NED9R.28** is **23.50%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Trina Solar TSM-NEG9R.28 460W use vs Trina Solar TSM-470NED9R.28? **Trina Solar TSM-NEG9R.28 **460 W**** uses **TOPCon** cells; **Trina Solar TSM-470NED9R.28** 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-NEG9R.28 460W and Trina Solar TSM-470NED9R.28? **Trina Solar TSM-NEG9R.28 **460 W**** has a **30 years** power warranty; **Trina Solar TSM-470NED9R.28** 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-NEG9R.28 460W and Trina Solar TSM-470NED9R.28 bifacial panels? **Trina Solar TSM-470NED9R.28** is bifacial (captures light from both faces); **Trina Solar TSM-NEG9R.28 **460 W**** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-465NED9R.28](https://comparepv.com/compare/trina-solar-co-ltd-tsm-neg9r-28-460w-1/trina-solar-tsm-465ned9r-28) - 4 differences, the largest is weight - [Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-NEG9R.28-460](https://comparepv.com/compare/trina-solar-co-ltd-tsm-neg9r-28-460w-1/trina-solar-co-ltd-tsm-neg9r-28-460-1) - The same specification on paper - [Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-460NEG9R.28](https://comparepv.com/compare/trina-solar-co-ltd-tsm-neg9r-28-460w-1/trina-solar-tsm-460neg9r-28) - 2 differences, the largest is product warranty - [Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-460 NEG9R.28](https://comparepv.com/compare/trina-solar-co-ltd-tsm-neg9r-28-460w-1/trina-solar-tsm-460-neg9r-28) - 2 differences, the largest is product warranty - [Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-460NED9R.28](https://comparepv.com/compare/trina-solar-co-ltd-tsm-neg9r-28-460w-1/trina-solar-tsm-460ned9r-28) - 3 differences, the largest is weight - [Trina Solar TSM-NEG9R.28 460W vs Trina Solar TSM-NEG9R.28 455W](https://comparepv.com/compare/trina-solar-co-ltd-tsm-neg9r-28-460w-1/trina-solar-co-ltd-tsm-neg9r-28-455w-1) - One difference: module efficiency --- Source: https://comparepv.com/compare/trina-solar-co-ltd-tsm-neg9r-28-460w-1/trina-solar-tsm-470ned9r-28 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.