--- title: "TPL Solar TPL-370M-120HC 370W Solar Panel - Specs & Review | ComparePV" description: "TPL Solar TPL-370M-120HC 370W solar panel. Specs: 20.02% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/tpl-solar-tpl-370m-120hc" updated: 2026-09-11 --- # TPL Solar TPL-370M-120HC Warranty pick, no clear weak spot 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** TPL Solar - **Model:** TPL-370M-120HC - **Series:** TPLM-120HC Series - **Rated power:** 370 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 370 W | 380 W | Typical | | | Module efficiency | 20.02% | 19.90% | Typical | 12,182 | | Power density | 200.0 | 199.0 | Typical | 12,227 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 20.5 kg | 21.4 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.02% | 19.90% | Typical | 12,182 | | Power density | 200.0 | 199.0 | Typical | 12,227 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 55.4 | 55.8 | Typical | 9,840 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Strengths - **30 year performance warranty** - Top 13% of the PERC 350-400 W segment, against a median of 25 yrs. - **Best for:** Owners who value a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 370 W - **Efficiency:** 20.02 % - **Voltage at Pmax (Vmp):** 34.00 V - **Current at Pmax (Imp):** 10.86 A - **Open-circuit voltage (Voc):** 40.80 V - **Short-circuit current (Isc):** 11.54 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 120 ### Physical - **Length:** 1765 mm - **Width:** 1048 mm - **Thickness:** 35 mm - **Weight:** 20.5 kg - **Area:** 1.85 m2 - **Power density:** 200.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 80.7 % - **First-year degradation:** 2.50 % - **Output after 30 years:** 299 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12182 of 14005 | | Power density | 12227 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 9840 of 14005 | | Warranty | 21 of 14005 | ## About this series The TPL Solar TPLM-120HC panel series is an advanced solution based on **Half-Cut cell technology**, which significantly reduces energy losses resulting from internal resistance. Thanks to this approach, these modules exhibit much higher resistance to partial shading and the negative impact of high temperatures, which translates into stable power production in real weather conditions. The use of **Multi-Busbar cells** guarantees a shorter current flow path, which minimizes the risk of micro-cracks and increases the overall mechanical durability of the module. This series solves the problem of limited installation space by offering high power density, allowing for lower BOS system costs and a faster return on investment. These panels are primarily dedicated to investors seeking **maximum efficiency with a low LCOE factor**, in both residential installations and large commercial projects. What distinguishes the TPLM-120HC from the competition is its exceptional performance in low light conditions and rigorous quality control that eliminates the **PID degradation effect**. The robust frame construction ensures resistance to extreme snow and wind loads, making this series one of the most reliable choices on the Polish photovoltaic market. ## Notable figures - At 20.0% efficiency, this panel is 0.6pp above typical \*\*PERC 0-400W\*\* modules (median: 19.4%) - Power density of 200.0 W/m² packs 5.6 W/m² more into the same footprint vs \*\*PERC 0-400W\*\* median (194.4 W/m²) - Temperature coefficient of -0.35%/°C matches the \*\*PERC 0-400W\*\* median - #12182 for efficiency, #10419 for temperature performance out of 14005 panels ## Questions ### What is the maximum power output of TPL Solar TPLM-120HC panels, and is it enough for a typical single-family home? Panels in the TPLM-120HC series reach a maximum power output of 370 Wp. This is a typical value for half-cut cell modules in this class and works well both for residential installations and larger commercial projects. Thanks to high power density, you can achieve greater system output on limited roof space, which lowers overall BoS costs. ### How does Half-Cut technology in the TPLM-120HC differ from standard PERC cells? The TPLM-120HC combines PERC cell technology with half-cut cell design and a Multi-Busbar system. Splitting cells in half reduces resistive losses and increases resistance to partial shading, such as from a chimney or antenna. Multi-busbar connections shorten the current path, lowering the risk of microcracks and improving mechanical durability compared to classic full-cell modules. ### What warranty applies to TPL Solar TPLM-120HC panels? The manufacturer offers a 12-year product warranty and a 30-year power output warranty. This means protection against factory defects for over a decade, plus assurance of gradual, controlled power degradation over three decades of use, which matters when calculating the LCOE and payback period of a solar installation. ### Are TPLM-120HC panels bifacial, generating power from both sides? No, the TPLM-120HC series consists of monofacial panels, not bifacial ones. This means they generate energy only from the front side of the module. This is a standard, proven solution for most roof-mounted installations, where the rear side has no access to reflected light, so the lack of bifacial capability is not a limitation for a typical residential setup. ### Who manufactures TPL Solar panels, and is it a Tier 1 supplier? TPL Solar is headquartered in Pakistan and is not listed as a Tier 1 manufacturer under the Bloomberg New Energy Finance classification. This doesn't necessarily mean lower technical quality, but it does indicate a smaller production scale or shorter market track record compared to industry giants. This is worth factoring in when assessing warranty support and supply stability in Poland. ### Do TPLM-120HC panels perform well in low light and high temperatures? Yes, thanks to Half-Cut and Multi-Busbar technology, TPLM-120HC modules show improved performance under low irradiance, such as early morning, evening, or cloudy days, compared to standard full-cell panels. The design also limits the negative impact of high temperatures on power output, resulting in more stable energy production during Polish summer conditions. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/5f607bcec4478-9f2be5dbbe19.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +3.1 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +3.1 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -50 W, lighter, +3.0 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -30 W, lighter, +3.0 pp | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | -10 W, lighter, +3.0 pp | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | +10 W, lighter, +3.0 pp | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +30 W, lighter, +3.0 pp | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +30 W, lighter, +3.0 pp | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | +10 W, lighter, +3.0 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.6 pp, +10 yr warranty | | [TPL Solar TPL-350M-120HC](https://comparepv.com/panel/tpl-solar-tpl-350m-120hc) | 350 W | -20 W, -1.1 pp | | [TPL Solar TPL-355M-120HC](https://comparepv.com/panel/tpl-solar-tpl-355m-120hc) | 355 W | -15 W, -0.8 pp | | [TPL Solar TPL-360M-120HC](https://comparepv.com/panel/tpl-solar-tpl-360m-120hc) | 360 W | -10 W, -0.5 pp | | [TPL Solar TPL-365M-120HC](https://comparepv.com/panel/tpl-solar-tpl-365m-120hc) | 365 W | -0.3 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +140 W, cooler, +5.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +125 W, cooler, +4.8 pp | --- Source: https://comparepv.com/panel/tpl-solar-tpl-370m-120hc Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.