--- title: "Trina Solar TSM-NEG9RC.27-435 435W Solar Panel - Specs & Review | ComparePV" description: "Trina Solar TSM-NEG9RC.27-435 435W solar panel: 1 shop offer from 112 €. Specs: 21.80% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg9rc-27-435" updated: 2026-10-02 --- # Trina Solar TSM-NEG9RC.27-435 Light for its output, no clear weak spot 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Trina Solar - **Model:** TSM-NEG9RC.27-435 - **Series:** Vertex S+ (TSM-NEG9RC.27 425–450W) - **Rated power:** 435 W - **Cell technology:** TOPCon - **Bifacial:** yes ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [www.sonnenshop.de](https://comparepv.com/go/15534) | Germany | 112 € incl. VAT | 257.47 €/kWp | In stock | Last read 3 Oct 01:33 | ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 435 W | 435 W | Typical | | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 217.7 | 220.2 | Typical | 7,066 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 21.0 kg | 22.0 kg | Strong - top 22% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 217.7 | 220.2 | Typical | 7,066 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 48.3 | 51.4 | Strong - top 22% | 2,138 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **48.3 kg per kWp** - Top 22% of the TOPCon 400-450 W segment, against a median of 51.4. - **Best for:** Residential, commercial, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 435 W - **Efficiency:** 21.80 % - **Voltage at Pmax (Vmp):** 43.60 V - **Current at Pmax (Imp):** 9.99 A - **Open-circuit voltage (Voc):** 51.80 V - **Short-circuit current (Isc):** 10.64 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 - **Bifacial:** yes ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 2.00 m2 - **Power density:** 217.7 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:** 380 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7022 of 14005 | | Power density | 7066 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 2138 of 14005 | | Warranty | 21 of 14005 | ## About this series The Trina Solar Vertex S+ Series (TSM-NEG9RC.27 425-450W) are modules designed for roofs, where efficiency, durability, and aesthetics are all important. The key advantage is **n-type i-TOPCon cells** - they operate more reliably over time and lose efficiency more slowly, genuinely improving the long-term profitability of installations. The applied **dual-glass (glass-glass) construction** better protects against moisture, loads, and typical operational risks, while also facilitating high reliability in demanding conditions (e.g., high humidity, airborne salinity). The Clear Black variant features **a black, transparent aesthetic** - the panel is less visually dominant on the roof, which is significant for modern buildings and premium investments. This solution is for residential and commercial rooftop installations where you need a **compromise between power and a compact format**, as well as wide compatibility with popular inverters and optimizers. An additional argument is the **extended warranty**, which enhances the security of the investment and distinguishes the series from many standard rooftop modules. ## Notable figures - At 21.8% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - Power density of 217.7 W/m² matches the \*\*TOPCon 400-450W\*\* median - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 400-450W\*\* median - Weight of 21.0 kg is typical for \*\*TOPCon 400-450W\*\* panels - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What warranty comes with the Trina Vertex S+ TSM-NEG9RC.27 panels? The manufacturer provides a 15-year product warranty and a 30-year linear power warranty, guaranteeing at least 87.4% of original output after 30 years of operation. This is longer than many standard rooftop modules offer, which meaningfully strengthens the investment's security and lowers the levelized cost of energy over the system's lifetime. ### What is n-type i-TOPCon technology and does it actually improve panel performance? i-TOPCon uses n-type cells with an additional passivation layer that reduces current losses and slows module degradation over time. In practice this delivers higher efficiency (up to 22.5%) and a slower year-over-year power decline compared to conventional p-type PERC cells, resulting in higher energy yield over a 20-30 year lifespan. ### What does bifacial mean for the Vertex S+, and how much extra energy does it really produce? The module generates power from both the front and rear side of the cells, capturing light reflected off the roof, terrace, or a light-colored facade. With a bifaciality factor of around 80%, mounting on a bright surface or ground-mount structure can add several to over ten percent extra annual yield compared to a monofacial panel of the same rated power. ### Is the dual-glass construction more durable than a standard glass-and-backsheet panel? Yes, using glass instead of a standard polymer backsheet better protects the cells against moisture, microcracks, and PID degradation, which matters especially in coastal or high-humidity regions. This construction also offers stronger mechanical resistance to hail and snow loads, supporting long-term reliability and justifying the extended product warranty. ### Is the Trina Vertex S+ Clear Black 450W suitable for a single-family sloped roof? Yes, the compact 1762x1134 mm footprint and roughly 21 kg weight make it easy to transport and install on typical rafters of a sloped roof. The Clear Black transparent-look aesthetic makes the panel less visually dominant on the roof surface, a common requirement for modern single-family homes and premium projects where facade appearance matters. ### Are the Vertex S+ 425-450W panels compatible with common inverters and power optimizers? Yes, the module's voltage and current characteristics align with the standard operating ranges of most string inverters and power optimizers on the market, including hybrid solutions paired with battery storage. This lets installers freely mix components from different manufacturers without compatibility issues, simplifying design for both residential and commercial installations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/dt-m-0069-f-datasheet-vertexs-neg9rc-27-en-2024-b-cd735351349d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +50 W, cooler, +2.5 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +50 W, cooler, +2.5 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +50 W, heavier, +2.5 pp | | [Trina Solar TSM-DE09R.05-405](https://comparepv.com/panel/trina-solar-tsm-de09r-05-405) | 405 W | Hotter, -1.5 pp, -5 yr warranty | | [Trina Solar TSM-DE09R.05-410](https://comparepv.com/panel/trina-solar-tsm-de09r-05-410) | 410 W | Hotter, -1.3 pp, -5 yr warranty | | [Trina Solar TSM-DE09R-415](https://comparepv.com/panel/trina-solar-tsm-de09r-415) | 415 W | Hotter, -1.0 pp, -5 yr warranty | | [Trina Solar TSM-DE09R.08-420](https://comparepv.com/panel/trina-solar-tsm-de09r-08-420) | 420 W | Hotter, -0.8 pp, -5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +75 W, cooler, +3.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +60 W, cooler, +3.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +70 W, cooler, +2.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +55 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +65 W, cooler, +2.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +65 W, cooler, +2.7 pp | --- Source: https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg9rc-27-435 Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.