--- title: "TPL Solar TPL340P-72 Solar Panel: Specs & Datasheet | ComparePV" description: "TPL Solar TPL340P-72 solar panel. Specs: 17.50% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/tpl-solar-tpl340p-72" image: "https://comparepv.com/og/panel/tpl-solar-tpl340p-72.png" updated: 2026-09-11 --- # TPL Solar TPL340P-72 Warranty pick, modest efficiency 291 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** TPL Solar - **Model:** TPL340P-72 - **Series:** TPL P-72 Series 315W-340W - **Rated power:** 340 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 300-350 W (291 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 340 W | 325 W | Strong - top 12% | | | Module efficiency | 17.50% | 19.00% | Weak - bottom 24% | 13,454 | | Power density | 175.2 | 190.0 | Weak - bottom 25% | 13,427 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,425 | | Weight (kg) | 23.0 kg | 19.0 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 16% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 17.50% | 19.00% | Weak - bottom 24% | 13,454 | | Power density | 175.2 | 190.0 | Weak - bottom 25% | 13,427 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,425 | | Weight per kWp | 67.6 | 60.3 | Typical | 13,378 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 16% | 21 | ### Strengths - **30 year performance warranty** - Top 16% of the PERC 300-350 W segment, against a median of 25 yrs. ### Watch out for - **17.50% module efficiency** - Bottom 24% of the PERC 300-350 W segment, against a median of 19.00%. - **175.2 watts per square metre** - Bottom 25% of the PERC 300-350 W segment, against a median of 190.0. - **Best for:** Commercial. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 340 W - **Efficiency:** 17.50 % - **Voltage at Pmax (Vmp):** 40.10 V - **Current at Pmax (Imp):** 8.48 A - **Open-circuit voltage (Voc):** 45.95 V - **Short-circuit current (Isc):** 8.86 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.360 %/degC - **Temperature coefficient of Isc:** 0.060 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell technology:** PERC - **Cell count:** 72 ### Physical - **Length:** 1956 mm - **Width:** 992 mm - **Thickness:** 40 mm - **Weight:** 23.0 kg - **Area:** 1.94 m2 - **Power density:** 175.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13454 of 14129 | | Power density | 13427 of 14129 | | Temperature coefficient | 12425 of 14129 | | Weight | 13378 of 14129 | | Warranty | 21 of 14129 | ## About this series The TPL Solar TPL P-72 315W-340W series consists of classic 72-cell polycrystalline modules, designed for stable operation in larger-scale installations. In practice, they are characterized by a **positive power tolerance**, which makes it easier to maintain predictable yields and reduce the risk of "weak links" within a single string. The use of an **IP67-rated junction box** and **MC4 connectors** facilitates quick assembly and increases resistance to environmental conditions - which is important on roofs of warehouses, in windy areas, and in ground-mounted installations. This series effectively addresses the issue of cost-effectiveness for larger module areas: the 72-cell arrangement promotes the creation of longer strings and organized wiring, and **bypass diodes** help minimize losses due to partial shading. This makes it a good choice for investors who expect **predictable, long-term performance** in commercial and industrial projects, without overpaying for technologies they don't need. ## Notable figures - At 17.5% efficiency, this panel is 1.9pp below the \*\*PERC 0-400W\*\* median of 19.4% - Power density of 175.2 W/m² is 19.0 W/m² below \*\*PERC 0-400W\*\* median (194.2 W/m²) - needs more roof space - At -0.36%/°C, hot weather performance is typical for \*\*PERC 0-400W\*\* panels - At 23.0 kg, this panel is 2.5 kg heavier than the \*\*PERC 0-400W\*\* median (20.5 kg) - more demanding for installation crews - #13454 for efficiency, #12425 for temperature performance out of 14129 panels ## Questions ### Is the TPL Solar P-72 315W-340W series still available for purchase? No, the manufacturer has discontinued production of this series and it is no longer part of the current lineup. Units may still be found in wholesaler stock or as leftover batches, so it's worth checking current inventory before ordering. For new projects, choosing an actively produced model with similar specifications is recommended. ### What warranty comes with the TPL Solar P-72 panels? The manufacturer provides a 12-year product warranty and a 30-year power performance warranty. This means the module should retain its declared power output percentage throughout that period, following the degradation curve stated in the datasheet. Note that warranty service for a discontinued model may be slower than for currently produced series. ### How does PERC technology in the TPL P-72 panels differ from standard polycrystalline cells? PERC cells feature an additional rear-side passivation layer that reflects unused light back into the cell, increasing its absorption. In practice, this results in higher efficiency and better energy yield compared to older, standard polycrystalline modules without this technology, while keeping the simplicity and cost of a 72-cell layout. ### What does positive power tolerance mean for the TPL P-72 315W-340W panels? Positive power tolerance means the module's actual output never falls below the rated nameplate value, and may even be slightly higher. This gives investors confidence that a system built from these panels will reach its planned total capacity, without the risk of underperformance caused by weaker units within a string. ### Are the TPL P-72 panels suitable for large commercial and ground-mounted installations? Yes, the 72-cell layout and power rating up to 340 Wp were designed for larger installations on industrial roofs, carports, and ground-mount solar farms. The 72-cell configuration supports longer strings and simplified wiring layouts, while the IP67-rated junction box and MC4 connectors ensure durability in demanding outdoor and industrial conditions. ### Are the TPL Solar P-72 panels bifacial modules? No, the P-72 315W-340W series uses standard monofacial PERC cells and does not generate power from its rear side. If additional yield from reflected light is desired, for example over bright ground surfaces or on elevated mounting structures, a dedicated bifacial series from another manufacturer should be considered instead. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/5b90903e64a27-25e9035ec130.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | Lighter, +2.6 pp, -5 yr warranty | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Lighter, +2.4 pp, -5 yr warranty | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | +2.4 pp | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | Lighter, +2.3 pp, -5 yr warranty | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | +25 W, +2.2 pp, -5 yr warranty | | [Canadian Solar CS3U-390P](https://comparepv.com/panel/canadian-solar-cs3u-390p) | 390 W | +50 W, +2.2 pp, -5 yr warranty | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | Lighter, +2.1 pp, -5 yr warranty | | [TPL Solar TPL300P-72](https://comparepv.com/panel/tpl-solar-tpl300p-72) | 300 W | -40 W, -2.0 pp | | [TPL Solar TPL305M-72](https://comparepv.com/panel/tpl-solar-tpl305m-72) | 305 W | -35 W, -1.7 pp | | [TPL Solar TPL310M-72](https://comparepv.com/panel/tpl-solar-tpl310m-72) | 310 W | -30 W, -1.5 pp | | [TPL Solar TPL315M-72](https://comparepv.com/panel/tpl-solar-tpl315m-72) | 315 W | -25 W, -1.2 pp | | [TPL Solar TPL315P -72](https://comparepv.com/panel/tpl-solar-tpl315p-72-1) | 315 W | -25 W, -1.2 pp | | [TPL Solar TPL320M-72](https://comparepv.com/panel/tpl-solar-tpl320m-72) | 320 W | -20 W, -1.0 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +135 W, +6.5 pp, +10 yr warranty | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +130 W, +6.2 pp, +10 yr warranty | | [Maxeon SPR-MAX7-465](https://comparepv.com/panel/maxeon-spr-max7-465) | 465 W | +125 W, +6.0 pp, +10 yr warranty | --- Source: https://comparepv.com/panel/tpl-solar-tpl340p-72 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.