--- title: "Trina Solar TSM-NEG18R.28-510 510W Solar Panel - Specs & Review | ComparePV" description: "Trina Solar TSM-NEG18R.28-510 510W solar panel: 1 shop offer from 312.48 zł. Specs: 22.90% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg18r-28-510-1" updated: 2026-10-03 --- # Trina Solar TSM-NEG18R.28-510 Light for its output, no clear weak spot 432 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** Trina Solar - **Model:** TSM-NEG18R.28-510 - **Series:** Vertex S+ (TSM-NEG18R.28 485-510W) - **Rated power:** 510 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 | | --- | --- | --- | --- | --- | --- | | [Sklep Soltech](https://comparepv.com/go/5219) | Poland | 312.48 zł net | 612.71 zł/kWp | Not stated | Last read 3 Oct 03:43 | ## How it compares Compared against segment TOPCon 500-550 W (432 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 510 W | 510 W | Typical | | | Module efficiency | 22.90% | 22.73% | Typical | 2,359 | | Power density | 229.3 | 227.4 | Typical | 2,343 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 23.5 kg | 27.0 kg | Strong - top 13% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.90% | 22.73% | Typical | 2,359 | | Power density | 229.3 | 227.4 | Typical | 2,343 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 46.1 | 52.4 | Strong - top 13% | 979 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **46.1 kg per kWp** - Top 13% of the TOPCon 500-550 W segment, against a median of 52.4. - **Best for:** Residential, commercial, cold-climate, hot-climate and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 510 W - **Efficiency:** 22.90 % - **Voltage at Pmax (Vmp):** 33.70 V - **Current at Pmax (Imp):** 15.14 A - **Open-circuit voltage (Voc):** 40.60 V - **Short-circuit current (Isc):** 15.93 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:** 108 ### Physical - **Length:** 1961 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.5 kg - **Area:** 2.22 m2 - **Power density:** 229.3 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:** 446 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2359 of 14005 | | Power density | 2343 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 979 of 14005 | | Warranty | 21 of 14005 | ## About this series The Trina Solar Vertex S+ TSM-NEG18R.28 (485-510W) series was designed as a mid-size module with the so-called "golden size" - specifically to facilitate rooftop installation while maximizing energy yield from the available surface area. Its key advantage lies in the combination of **N-type cells in i-TOPCon technology** with **glass-glass construction**, which practically means more stable long-term performance and reduced susceptibility to typical operational issues, such as micro-cracking or accelerated degradation in challenging environments. For commercial projects, it’s not just the power output that matters, but also the overall system cost - which is why the Vertex S+ supports LCOE optimization and BOS cost reduction through its thoughtful dimensions and compatibility with popular mounting solutions. This series is designed for investors and installers who want **more energy per square meter** without compromising on reliability. It is also distinguished by **low degradation** and **long warranties**, translating into predictable returns from installations over the long term. ## Notable figures - At 22.9% efficiency, this panel is on par with typical \*\*TOPCon 500-550W\*\* modules - At 229.3 W/m² power density, roof space requirements are typical for \*\*TOPCon 500-550W\*\* panels - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 500-550W\*\* median - 23.5 kg weight - 3.5 kg lighter than \*\*TOPCon 500-550W\*\* median (27.0 kg), reducing installation effort - Ranked #2359 out of 14005 panels for efficiency in the database ## Questions ### What is i-TOPCon technology used in Trina Vertex S+ TSM-NEG18R.28 panels and how does it differ from PERC? i-TOPCon is an N-type cell technology featuring an additional passivation layer that reduces carrier recombination, resulting in higher cell efficiency and a lower temperature coefficient (approx. -0.29%/°C) compared to conventional P-type PERC cells. In practice, this means higher energy yield, especially in summer, and slower power degradation over the system's lifetime. ### Are Trina Vertex S+ TSM-NEG18R.28 panels bifacial? No, the TSM-NEG18R.28 series is a monofacial module despite its glass-glass construction. The manufacturer chose this configuration to optimize cost and weight while maintaining high mechanical durability. If you're looking for extra yield from reflected light off the ground surface, check Trina Solar's bifacial Vertex variants instead. ### What warranty comes with Trina Solar Vertex S+ TSM-NEG18R.28 panels? The manufacturer provides a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means the panel is expected to retain a substantial share of its rated performance after 30 years of operation, supporting predictable, long-term returns on your PV system investment. ### How does glass-glass construction differ from a standard panel with a polymer backsheet, and why does it matter? In a glass-glass module, cells are laminated between two glass layers instead of glass and a polymer backsheet. This design offers better protection against moisture, microcracks, and mechanical damage, reducing degradation risk in harsh climates. As a result, Trina Vertex S+ maintains more stable performance throughout its warranty period, though the panel is somewhat heavier than backsheet versions. ### Are Trina Vertex S+ TSM-NEG18R.28 panels suitable for a residential pitched roof? Yes, the mid-size 1961×1134 mm format was designed as a so-called golden size, balancing high yield with easy installation on typical pitched roofs. The panel dimensions align well with standard rafter spacing and commonly available mounting systems, allowing installers to make efficient use of roof area without needing custom racking. ### What is the maximum power output in the Vertex S+ TSM-NEG18R.28 series, and what drives the 485-510W variation? The series is offered in power classes ranging from 485 to 510 Wp, with differences stemming from natural manufacturing variance in i-TOPCon cell efficiency and post-production module binning. Choosing a higher-wattage class yields more energy from the same roof area, which matters most in commercial and industrial projects where mounting space is limited. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/dt-m-0088-d-datasheet-vertex-s-neg18r-28-en-2024-c-fd968f026b6f.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +2.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +1.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +50 W, cooler, +1.9 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +1.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +45 W, cooler, +1.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.6 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | -10 W, cooler, +1.6 pp | | [Trina Solar TSM-NEG18R.28-475](https://comparepv.com/panel/trina-solar-tsm-neg18r-28-475) | 475 W | -35 W, -1.5 pp | | [Trina Solar TSM-NEG18R.28-480](https://comparepv.com/panel/trina-solar-tsm-neg18r-28-480) | 480 W | -30 W, -1.3 pp | | [Trina Solar TSM-NEG18R.25-485](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg18r-25-485) | 485 W | -25 W, -1.1 pp | | [Trina Solar TSM-NEG18RC.27-490](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg18rc-27-490) | 490 W | -20 W, -0.9 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +40 W, lighter, +1.5 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +30 W, cooler, +1.5 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +30 W, cooler, +1.5 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +35 W, heavier, +1.4 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +35 W, cooler, +1.3 pp | --- Source: https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg18r-28-510-1 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.