--- title: "Viessmann P265PGHC 265W Solar Panel - Specs & Review | ComparePV" description: "Viessmann P265PGHC 265W solar panel. Specs: 16.30% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/viessmann-p265pghc" updated: 2026-09-11 --- # Viessmann P265PGHC Middle of its segment, weak in heat 1,089 panels in the 165-365 W band, all technologies ## Identity - **Manufacturer:** Viessmann - **Model:** P265PGHC - **Series:** Vitovolt 300 - **Rated power:** 265 W - **Cell technology:** Polycrystalline ## How it compares Compared against 165-365 W band, all technologies (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 265 W | 320 W | Weak - bottom 21% | | | Module efficiency | 16.30% | 17.90% | Weak - bottom 21% | 13,600 | | Power density | 162.9 | 178.9 | Weak - bottom 21% | 13,591 | | Temperature coefficient | -0.420 | -0.360 | Weak - bottom 8% | 13,796 | | Weight (kg) | 18.5 kg | 19.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 16.30% | 17.90% | Weak - bottom 21% | 13,600 | | Power density | 162.9 | 178.9 | Weak - bottom 21% | 13,591 | | Temperature coefficient | -0.420 | -0.360 | Weak - bottom 8% | 13,796 | | Weight per kWp | 69.8 | 63.8 | Typical | 13,401 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Watch out for - **-0.420 %/°C temperature coefficient** - Bottom 8% of the 165-365 W band, against a median of -0.360. Ranked 13,796th in the whole database. - **16.30% module efficiency** - Bottom 21% of the 165-365 W band, against a median of 17.90%. - **162.9 watts per square metre** - Bottom 21% of the 165-365 W band, against a median of 178.9. - **Best for:** Residential, shaded-installations and cold-climate. - **Not ideal for:** Hot climates, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 265 W - **Efficiency:** 16.30 % - **Voltage at Pmax (Vmp):** 30.97 V - **Current at Pmax (Imp):** 8.58 A - **Open-circuit voltage (Voc):** 38.17 V - **Short-circuit current (Isc):** 9.02 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.420 %/degC - **Temperature coefficient of Voc:** -0.310 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell count:** 60 ### Physical - **Length:** 1640 mm - **Width:** 992 mm - **Thickness:** 40 mm - **Weight:** 18.5 kg - **Area:** 1.63 m2 - **Power density:** 162.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 10 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 80.0 % - **First-year degradation:** 3.00 % - **Annual degradation:** 0.71 % - **Output after 30 years:** 202 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13600 of 14005 | | Power density | 13591 of 14005 | | Temperature coefficient | 13796 of 14005 | | Weight | 13401 of 14005 | | Warranty | 9798 of 14005 | ## About this series Vitovolt 300 is an advanced line of photovoltaic modules that combines high efficiency with exceptional durability, meeting the needs of investors seeking full energy security. This series utilizes innovative **shingled cell technology**, which eliminates gaps between cells, increasing the active surface area and performance in difficult lighting conditions. Thanks to this solution, the panels handle shading much better than standard products, maintaining high electricity production even when the module surface is partially covered. These products solve the problem of power degradation over time, offering a **25-year performance warranty** and excellent resistance to aggressive external factors, such as ammonia or salt spray. It is an ideal choice for modern farms, single-family homes, and buildings in demanding coastal areas. Compared to the competition, Vitovolt 300 stands out with **high mechanical strength** of 6000 Pa, which guarantees structural stability even during extreme snowfall. The series provides an **elegant design with a black frame**, which harmoniously blends with any roof architecture. It is a complete system for those who value European engineering standards, offering **positive power tolerance**, which translates into real yields above nominal values and a faster return on investment in the variable Polish climate. ## Notable figures - Efficiency of 16.3% is 5.5pp below the \*\*database\*\* median (21.8%) - 162.9 W/m² power density is 55.2 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - -0.42%/°C temperature coefficient - 0.12pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - 18.5 kg weight - 8.0 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort - Ranked #13600 out of 14005 panels for efficiency in the database ## Questions ### What is shingled cell technology used in Vitovolt 300 and is it worth choosing? Shingled technology connects strips of PERC cells with no gaps between them, increasing the module's active surface area and reducing losses at cell junctions. In practice, the panel handles partial shading - from a chimney or antenna, for example - better than modules with conventional cell layouts, maintaining higher power output. It also gives the surface a more uniform look, without visible busbar grids. ### What warranty comes with Viessmann Vitovolt 300 modules? Vitovolt 300 comes with a 15-year product warranty covering material and workmanship defects, plus a 25-year linear power warranty guaranteeing a minimum performance level over the module's service life. This warranty structure gives investors confidence that the installation will keep producing at a high level throughout the typical loan repayment or depreciation period used in most Polish PV subsidy programs. ### Are Vitovolt 300 panels suitable for a farm building roof or a coastal location? Yes, Vitovolt 300 modules are tested for resistance to ammonia and salt mist, making them a solid choice for farm buildings (barns, poultry houses) and structures near the sea, where standard panels can corrode faster. The black frame and clean design also blend well with both agricultural roofs and single-family homes in more demanding environmental conditions. ### What is the maximum power output of Vitovolt 300 panels, and how many are needed for a 5 kWp system? Vitovolt 300 modules reach a maximum power output of up to 405 Wp. For a residential 5 kWp system, that means roughly 12-13 panels, depending on the exact inverter configuration and available roof space. Thanks to the positive power tolerance, individual modules often slightly exceed their rated output in practice, resulting in somewhat higher yields than theoretical calculations alone would suggest. ### Can Vitovolt 300 panels handle heavy snow loads and strong wind? Yes, the series offers high mechanical load resistance of up to 6000 Pa, well above typical requirements for the Polish climate. This construction allows the panels to safely handle heavy snow accumulation on the roof as well as strong wind gusts, without risk of glass cracking or frame deformation - a key advantage for buildings in regions with variable weather. ### Are Viessmann Vitovolt 300 panels bifacial? No, Vitovolt 300 modules are mono-facial, using shingled PERC cells enclosed in a conventional, non-transparent backsheet structure. This means they generate power only from light hitting the front side of the panel, unlike bifacial modules that also capture light reflected off the ground. For typical sloped roofs, this is a fully sufficient and more cost-effective solution. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/db-5684724_vitovolt_300_typ_p260pghc-1-7c324d2e612a.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Canadian Solar CS3K-315P](https://comparepv.com/panel/canadian-solar-cs3k-315p) | 315 W | +50 W, cooler, +2.7 pp | | [Canadian Solar CS3K-310P-AG](https://comparepv.com/panel/canadian-solar-cs3k-310p-ag) | 310 W | Cooler, +2.4 pp, +5 yr warranty | | [Rarlon PV Tech RL310HP-120](https://comparepv.com/panel/rarlon-pv-tech-rl310hp-120) | 310 W | +45 W, cooler, +2.3 pp | | [SunLink LNSK-315P](https://comparepv.com/panel/sunlink-lnsk-315p) | 315 W | +50 W, cooler, +2.3 pp | | [Canadian Solar CS3K-310PB-AG](https://comparepv.com/panel/canadian-solar-cs3k-310pb-ag) | 310 W | Cooler, +2.1 pp, +5 yr warranty | | [Canadian Solar CS3K-305P-AG](https://comparepv.com/panel/canadian-solar-cs3k-305p-ag) | 305 W | Cooler, +2.1 pp, +5 yr warranty | | [SunLink LNSK-310P](https://comparepv.com/panel/sunlink-lnsk-310p) | 310 W | +45 W, cooler, +2.0 pp | | [Viessmann P255PGHC](https://comparepv.com/panel/viessmann-p255pghc) | 255 W | -10 W, -0.6 pp | | [Viessmann P260PGHC](https://comparepv.com/panel/viessmann-p260pghc) | 260 W | -0.3 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +6.3 pp, +15 yr warranty | | [Lina Energy LEPV 400](https://comparepv.com/panel/lina-energy-lepv-400) | 400 W | +135 W, cooler, +6.0 pp | | [Phono Solar NS-360MH-60](https://comparepv.com/panel/phono-solar-ns-360mh-60) | 360 W | +95 W, cooler, +5.8 pp | | [PolyCrown Solar Tech NS-360MH-60](https://comparepv.com/panel/polycrown-solar-tech-ns-360mh-60) | 360 W | +95 W, cooler, +5.8 pp | | [Maxeon SPR-MAX3-390-COM](https://comparepv.com/panel/maxeon-spr-max3-390-com) | 390 W | Cooler, +5.8 pp, +15 yr warranty | | [Meyer Burger MB\_TG120ByB\_390](https://comparepv.com/panel/meyer-burger-mb-tg120byb-390) | 390 W | +125 W, cooler, +5.5 pp | | [Panasonic EVPV380](https://comparepv.com/panel/panasonic-evpv380) | 380 W | +115 W, cooler, +5.4 pp | --- Source: https://comparepv.com/panel/viessmann-p265pghc Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.