--- title: "Trina Solar TSM-NEG19RC.20-640 640W Solar Panel - Specs & Review | ComparePV" description: "Trina Solar TSM-NEG19RC.20-640 640W solar panel: 1 shop offer from 127.99 €. Specs: 23.70% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg19rc-20-640" updated: 2026-10-05 --- # Trina Solar TSM-NEG19RC.20-640 Efficiency leader, no clear weak spot 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Trina Solar - **Model:** TSM-NEG19RC.20-640 - **Series:** Vertex N TSM-NEG19RC.20 - **Rated power:** 640 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 | | --- | --- | --- | --- | --- | --- | | [livre.pt](https://comparepv.com/go/128388) | Portugal | 127.99 € net | 199.98 €/kWp | In stock | Last read 5 Oct 04:36 | ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 640 W | 620 W | Strong - top 9% | | | Module efficiency | 23.70% | 22.80% | Strong - top 4% | 517 | | Power density | 236.9 | 227.7 | Strong - top 4% | 521 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 33.0 kg | 32.7 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.70% | 22.80% | Strong - top 4% | 517 | | Power density | 236.9 | 227.7 | Strong - top 4% | 521 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 51.6 | 53.1 | Typical | 4,940 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **23.70% module efficiency** - Top 4% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 517th in the whole database. - **236.9 watts per square metre** - Top 4% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 521st in the whole database. - **Best for:** Utility-scale, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 640 W - **Efficiency:** 23.70 % - **Voltage at Pmax (Vmp):** 41.06 V - **Current at Pmax (Imp):** 15.60 A - **Open-circuit voltage (Voc):** 49.30 V - **Short-circuit current (Isc):** 16.51 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:** 132 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 33.0 kg - **Area:** 2.70 m2 - **Power density:** 236.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 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:** 559 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 517 of 14005 | | Power density | 521 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 4940 of 14005 | | Warranty | 21 of 14005 | ## About this series The Vertex N TSM-NEG19RC.20 is built around n-type cells and Trina Solar's patented i-TOPCon technology, pairing high unit power with low long-term degradation. The series relies on **n-type TOPCon cells** and a **bifacial** design, allowing the panel to capture extra energy from light reflected onto its rear side, which meaningfully boosts the energy yield of an installation, especially on bright roof surfaces or ground-mount systems. The 210 mm cell platform combined with a **half-cut** cell layout reduces resistive losses and improves resilience to partial shading. A key advantage is the **low-voltage design**, which enables longer strings without exceeding inverter voltage limits, cutting down the number of required installation components and lowering BoS costs. This translates directly into a reduced LCOE for the overall investment. The panel suits both large-scale solar farms and commercial projects where maximizing power output per available surface area matters, along with a predictable, **long-term power warranty**. It's a solid choice for investors seeking high performance while keeping operating costs low over many years of system operation. ## Notable figures - 23.7% module efficiency - 0.9pp better than the \*\*TOPCon 600-650W\*\* median of 22.8% - At 236.9 W/m² power density, this panel generates 9.2 W/m² more per unit area than \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 600-650W\*\* panels - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface - In the top 4% for efficiency among all TOPCon panels ## Questions ### What is the maximum power output and efficiency of the Trina Vertex N TSM-NEG19RC.20 panel? The highest-power version of this series reaches up to 650 Wp with module efficiency of up to 24.1%. This high unit power comes from the 210 mm platform, 132 half-cut cells, and n-type i-TOPCon technology. As a result, more energy can be generated from the same roof or ground area compared to classic PERC modules of similar size. ### How do the n-type TOPCon cells in Vertex N differ from classic PERC cells? N-type TOPCon cells have lower annual degradation (0.40% after the first year versus roughly 0.55% for PERC) and handle high temperatures better thanks to a -0.29%/°C power temperature coefficient. In practice this means higher and more stable energy yield over the long term, which lowers the levelized cost of energy (LCOE) compared to older technologies. ### What does the bifacial design of the Vertex N TSM-NEG19RC.20 add, and is it worth the extra cost? The bifacial construction lets the rear side of the module capture light reflected off the ground, roof, or snow, which can boost energy yield by several to well over ten percent depending on surface albedo. It's especially worth choosing for light-colored roofs, gravel ground-mount surfaces, or racking systems with high ground clearance. ### What warranty comes with the Trina Vertex N TSM-NEG19RC.20 solar panels? The manufacturer provides a 12-year product warranty and a 30-year linear power warranty, guaranteeing at least 87.4% of rated power retained after that period. The first year is covered by a 99% power output guarantee. This is standard for premium n-type modules and one of the longer coverage periods currently available on the PV market. ### Is the Vertex N TSM-NEG19RC.20 suitable for large solar farms and long strings? Yes, the low-voltage design of this series allows for longer strings without exceeding inverter voltage limits, reducing the number of BoS components needed, shortening cabling, and lowering installation costs. Combined with a unit power of up to 650 Wp, the panel is a popular choice for large ground-mount farms and commercial or industrial projects. ### Does the Vertex N TSM-NEG19RC.20 perform well in high temperatures and strong sunlight? Yes, thanks to its low power temperature coefficient of -0.29%/°C, the module loses less output as operating temperature rises compared to classic PERC panels (typically around -0.35%/°C). This is a significant advantage in hot climates and on large ground-mount farms, where panels reach high operating temperatures in summer, and stable power translates into predictable energy yield. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/DT-M-0045-G-EN-K-Datasheet_Vertex_NEG19RC20_2025_D-dacdf94943cb.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +1.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +40 W, lighter, +1.5 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +35 W, lighter, +1.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +1.3 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +30 W, lighter, +1.1 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +30 W, lighter, +1.1 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +1.1 pp | | [Trina Solar TEB-NEGA6ND.48-420 (Silver Grey, RAL9018)](https://comparepv.com/panel/trinasolar-evergreen-shanghai-pv-tech-co-ltd-teb-nega6nd-48-420-silver-grey-ral9018) | 420 W | -220 W, -8.2 pp, -5 yr warranty | | [Trina Solar TEB-NEGA6ND.48-425 (Silver Grey, RAL9018)](https://comparepv.com/panel/trinasolar-evergreen-shanghai-pv-tech-co-ltd-teb-nega6nd-48-425-silver-grey-ral9018) | 425 W | -215 W, -8.0 pp, -5 yr warranty | | [Trina Solar TEB-NEGA6ND.48-430 (Silver Grey, RAL9018)](https://comparepv.com/panel/trinasolar-evergreen-shanghai-pv-tech-co-ltd-teb-nega6nd-48-430-silver-grey-ral9018) | 430 W | -210 W, -7.8 pp, -5 yr warranty | | [Trina Solar TEB-NEGA6ND.48-545 (Green, RAL6001)](https://comparepv.com/panel/trinasolar-evergreen-shanghai-pv-tech-co-ltd-teb-nega6nd-48-545-green-ral6001) | 545 W | -95 W, -3.5 pp, -5 yr warranty | | [Trina Solar TEB-NEGA6ND.48-550 (Green, RAL6001)](https://comparepv.com/panel/trinasolar-evergreen-shanghai-pv-tech-co-ltd-teb-nega6nd-48-550-green-ral6001) | 550 W | -90 W, -3.4 pp, -5 yr warranty | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +60 W, cooler, +1.3 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +55 W, cooler, +1.2 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +30 W, cooler, +1.1 pp | --- Source: https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg19rc-20-640 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.