--- title: "Trina Solar TSM-NEG9R.28 455W 455W Solar Panel - Specs & Review | ComparePV" description: "Trina Solar TSM-NEG9R.28 455W 455W solar panel: 1 shop offer from 69 €. Specs: 22.80% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg9r-28-455w-1" updated: 2026-10-06 --- # Trina Solar TSM-NEG9R.28 455W Light for its output, no clear weak spot 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Trina Solar - **Model:** TSM-NEG9R.28 455W - **Series:** Vertex S+ (TSM-NEG9R.28) - **Rated power:** 455 W - **Cell technology:** TOPCon ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [solar-haus.de](https://comparepv.com/go/120732) | Germany | 69 € incl. VAT | 151.65 €/kWp | In stock | Last read 6 Oct 02:07 | ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 455 W | 465 W | Typical | | | Module efficiency | 22.80% | 22.52% | Typical | 2,714 | | Power density | 227.7 | 225.2 | Typical | 2,888 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 21.0 kg | 24.0 kg | Strong - top 15% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.80% | 22.52% | Typical | 2,714 | | Power density | 227.7 | 225.2 | Typical | 2,888 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 46.2 | 52.2 | Strong - top 15% | 1,016 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **46.2 kg per kWp** - Top 15% of the TOPCon 450-500 W segment, against a median of 52.2. - **Best for:** Residential, commercial, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 455 W - **Efficiency:** 22.80 % - **Voltage at Pmax (Vmp):** 45.00 V - **Current at Pmax (Imp):** 10.11 A - **Open-circuit voltage (Voc):** 53.40 V - **Short-circuit current (Isc):** 10.77 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 144 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 2.00 m2 - **Power density:** 227.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 398 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2714 of 14005 | | Power density | 2888 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 1016 of 14005 | | Warranty | 21 of 14005 | ## About this series The Trina Solar Vertex S+ (TSM-NEG9R.28) series was designed for rooftops where high energy production, hassle-free installation, and long-term operational stability are equally important. Its key feature is the combination of **n-type i-TOPCon cells** with the **glass-glass (double glass) construction** - this pairing genuinely improves module resistance to aging and environmental factors, while simultaneously helping maintain higher yields over a long-term horizon. In practice, this means lower risks of performance degradation over time and better production predictability, which is crucial for reporting and planning self-consumption. The adopted architecture also enhances safety - **enhanced mechanical and fire resistance** is particularly valuable for residential and commercial rooftops. The Vertex S+ NEG9R.28 is an excellent choice for home installations, small businesses, and rooftop projects where **high workmanship quality**, compatibility with popular inverters, and **long warranties** are required, without compromising on aesthetics and durability. ## Notable figures - Efficiency of 22.8% matches the \*\*TOPCon 450-500W\*\* median - At 227.7 W/m² power density, roof space requirements are typical for \*\*TOPCon 450-500W\*\* panels - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 450-500W\*\* panels - 21.0 kg weight - 3.0 kg lighter than \*\*TOPCon 450-500W\*\* median (24.0 kg), reducing installation effort - In the top 19% for efficiency among all TOPCon panels ## Questions ### What is n-type TOPCon technology in the Trina Vertex S+ TSM-NEG9R.28 panels, and how does it differ from classic p-type cells? TOPCon (Tunnel Oxide Passivated Contact) is an n-type cell technology that reduces charge carrier recombination through an additional passivation layer. In practice, this means higher efficiency (up to 460 Wp per module), lower annual degradation, and better performance at high temperatures compared to older p-type PERC cells. It's the technology most market leaders, including Trina Solar, are now investing in. ### What warranty covers the Trina Solar Vertex S+ TSM-NEG9R.28 panels? The Vertex S+ TSM-NEG9R.28 series comes with a 15-year product warranty covering material and manufacturing defects, plus a 30-year power warranty guaranteeing sustained high energy output over the long term. This is a key factor when choosing panels for an installation expected to run reliably for decades. ### Does the glass-glass construction of the Vertex S+ NEG9R.28 require special mounting on a sloped roof? No, the modules, measuring 1762×1134×30 mm and weighing about 21 kg, install on standard rail-based mounting systems used for glass-glass modules, similar to conventional framed panels. The double glass increases stiffness and mechanical resistance to snow and wind loads, an added benefit in harsher roof conditions, but it doesn't change the standard installation procedure. ### Are the Trina Vertex S+ TSM-NEG9R.28 panels bifacial? No, the Vertex S+ TSM-NEG9R.28 series consists of mono-facial modules, despite the glass-glass construction. The double glass here mainly serves a protective role, improving sealing, mechanical strength, and fire resistance, rather than generating extra energy from the rear side as bifacial panels do. ### How do the Vertex S+ NEG9R.28 panels perform in low and high temperatures? The power temperature coefficient is -0.29%/°C, meaning less efficiency loss as temperature rises compared to typical p-type panels (usually around -0.35%/°C). This translates to better performance in summer heat. Low temperatures aren't an issue either - silicon cells, including TOPCon, operate normally and can even perform slightly better in colder climates. ### How many cells does the Trina Solar Vertex S+ TSM-NEG9R.28 panel have, and how does that affect shading tolerance? The module uses 144 half-cut cells, which, compared to full-size cells, reduce power losses under partial shading from chimneys, antennas, or nearby buildings. Smaller cell segments also lower resistive losses and boost overall module efficiency, reaching up to 460 Wp. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/dt-m-0043-i-datasheet-vertex-s-neg9r-28-en-2024-d-9b38212be6bc.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +40 W, cooler, +2.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +50 W, cooler, +1.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +35 W, cooler, +1.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +45 W, cooler, +1.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +45 W, cooler, +1.7 pp | | [Gokin GK-3-54HGb-500M](https://comparepv.com/panel/gokin-gk-3-54hgb-500m) | 500 W | +45 W, cooler, +1.7 pp | | [Trina Solar TSM-DE09R.05-405](https://comparepv.com/panel/trina-solar-tsm-de09r-05-405) | 405 W | -50 W, hotter, -2.5 pp | | [Trina Solar TSM-DE09R.05-410](https://comparepv.com/panel/trina-solar-tsm-de09r-05-410) | 410 W | Hotter, -2.3 pp, -5 yr warranty | | [Trina Solar TSM-DE09R-415](https://comparepv.com/panel/trina-solar-tsm-de09r-415) | 415 W | Hotter, -2.0 pp, -5 yr warranty | | [Trina Solar TSM-DE09R.08-420](https://comparepv.com/panel/trina-solar-tsm-de09r-08-420) | 420 W | Hotter, -1.8 pp, -5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +55 W, cooler, +2.2 pp | --- Source: https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg9r-28-455w-1 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.