--- title: "Phono Solar PS505M6-22/WH Solar Panel: Specs & Datasheet | ComparePV" description: "Phono Solar PS505M6-22/WH solar panel. Specs: 21.27% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/phono-solar-technology-co-ltd-ps505m6-22-wh" image: "https://comparepv.com/og/panel/phono-solar-technology-co-ltd-ps505m6-22-wh.png" updated: 2026-09-11 --- # Phono Solar PS505M6-22/WH Space saver, short guarantee 709 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** Phono Solar - **Model:** PS505M6-22/WH - **Series:** Twinplus Module Series (HIGH EFFICIENCY MONO-PERC M6-10B-R) - **Rated power:** 505 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 500-550 W (709 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 505 W | 535 W | Weak - bottom 11% | | | Module efficiency | 21.27% | 20.90% | Strong - top 7% | 8,918 | | Power density | 212.7 | 209.0 | Strong - top 6% | 8,824 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 8% | 8,613 | | Weight (kg) | 26.0 kg | 28.3 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 22% | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.27% | 20.90% | Strong - top 7% | 8,918 | | Power density | 212.7 | 209.0 | Strong - top 6% | 8,824 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 8% | 8,613 | | Weight per kWp | 51.5 | 53.0 | Typical | 4,880 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 22% | 9,912 | ### Strengths - **212.7 watts per square metre** - Top 6% of the PERC 500-550 W segment, against a median of 209.0. Ranked 8,824th in the whole database. - **21.27% module efficiency** - Top 7% of the PERC 500-550 W segment, against a median of 20.90%. Ranked 8,918th in the whole database. - **-0.330 %/°C temperature coefficient** - Top 8% of the PERC 500-550 W segment, against a median of -0.350. Ranked 8,613th in the whole database. ### Watch out for - **25 year performance warranty** - Bottom 22% of the PERC 500-550 W segment, against a median of 30 yrs. - **Best for:** Residential, commercial, shaded-installations and utility-scale. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 505 W - **Efficiency:** 21.27 % - **Voltage at Pmax (Vmp):** 38.15 V - **Current at Pmax (Imp):** 13.24 A - **Open-circuit voltage (Voc):** 45.53 V - **Short-circuit current (Isc):** 13.82 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.330 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.042 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 132 ### Physical - **Length:** 2094 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.0 kg - **Area:** 2.37 m2 - **Power density:** 212.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 414 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8918 of 14129 | | Power density | 8824 of 14129 | | Temperature coefficient | 8613 of 14129 | | Weight | 4880 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Tier-1 BNEF status since 2014** - Phono Solar (founded 2004) has held Tier-1 status on the Bloomberg New Energy Finance list continuously since 2014, confirming financial stability and bankability - a key factor for projects financed by lending institutions. - **High unit power up to 555 Wp** - The series spans 400-555 Wp with up to 21.51% efficiency, placing it near the top of the M6 PERC segment - comparable to Boviet Solar VEGA (555 Wp, 21.3%) and Shinson S-Max (555 Wp, 21.48%). - **Half-cut cells with multi-busbar** - Half-cut cell technology reduces resistive losses at cell interconnections and improves partial-shading tolerance (e.g., near chimneys or dormers), while the multi-busbar layout improves current collection efficiency and long-term reliability. - **PID resistance and reduced hot-spot risk** - An optimized electrical layout combined with PID (potential-induced degradation) resistance lowers the risk of hot spots under uneven irradiance, contributing to more stable performance over the module's operating life. - **25-year power warranty** - A standard-for-PERC-generation 25-year linear power warranty and 12-year product warranty give investors a predictable return horizon, in line with typical market terms for Tier-1 panels of this vintage. ## Cons - **Discontinued in 2024** - The Twinplus M6-10B-R series was discontinued (released 2021, end of production 2024), meaning limited availability of warranty service, matching replacement modules, and constrained options for expanding an existing installation with identical specs. - **PERC technology trails N-type generation** - The 21.51% peak efficiency lags behind Jinko Solar's JS-PERC (21.7% at the same 555 Wp), and by 2026 the market is dominated by N-type TOPCon/HJT modules with better temperature coefficients and lower LID degradation, making this series technologically dated relative to current offerings. ## About this series The Phono Solar Twinplus module series (HIGH EFFICIENCY MONO-PERC M6-10B-R) was designed to maximize energy yield where every square meter of roof space counts and ensure stable performance in varying conditions. The use of **mono-PERC cells** supports high efficiency in daily operation, while **half-cut technology** minimizes connection losses and improves tolerance to partial shading, which is often critical near chimneys, window frames, or installations on multiple rafters. In practice, this translates to more predictable energy production and a better self-consumption balance. Additionally, **multi-busbar** technology aids in more efficient current collection from the cells and enhances reliability over the long term. The manufacturer also highlights **PID resistance** and an optimized electrical layout, which reduces the risk of hot-spot formation, a common issue under uneven sunlight exposure. This makes it an excellent choice for both residential and commercial installations where high yield, safe operation, and worry-free long-term performance are priorities. ## Notable figures - At 21.3% efficiency, this panel is on par with typical \*\*PERC 500-550W\*\* modules - 212.7 W/m² power density - 3.7 W/m² more than \*\*PERC 500-550W\*\* median (209.0 W/m²), more power per roof area - At -0.33%/°C, hot weather performance is typical for \*\*PERC 500-550W\*\* panels - Weight of 26.0 kg (2.3 kg below \*\*PERC 500-550W\*\* median of 28.3 kg) allows easier transport and roof mounting - In the top 63% for efficiency among all PERC panels ## Questions ### Is the Phono Solar Twinplus (MONO-PERC M6-10B-R) series still available for purchase? The Phono Solar Twinplus High Efficiency MONO-PERC M6-10B-R series has been discontinued and is no longer an actively produced product. Limited availability may still exist through secondary markets or distributors with remaining stock. If you need similar specifications, current Phono Solar lineups offer comparable mono-PERC modules with similar or higher output. ### What warranties come with the Phono Solar Twinplus MONO-PERC M6-10B-R panels? Phono Solar backed this series with a 12-year product warranty covering materials and workmanship, and a 25-year linear power output warranty guaranteeing the module retains a defined percentage of its rated wattage over time. As a BloombergNEF Tier 1 manufacturer, Phono Solar's warranty commitments carry stronger long-term credibility than non-rated brands. ### What does half-cut cell technology do in the Twinplus MONO-PERC M6-10B-R and does it help with shading? Half-cut technology splits each PERC cell into two smaller halves, reducing resistive losses and splitting the module into two independent electrical circuits. When a chimney, dormer, or antenna shades part of the module, the unshaded half continues generating power normally. This translates to measurably better daily energy yield on rooftops with obstructions or suboptimal orientation. ### What is the maximum power output of the Twinplus MONO-PERC M6-10B-R and what installations is it suited for? The top power variant in this series reaches 555 Wp under standard test conditions (STC). The module suits both residential pitched-roof installs and commercial flat-roof systems. Higher per-panel wattage means fewer modules are needed to hit a target system size, which lowers BoS costs and reduces the required roof area. ### How do the Phono Solar Twinplus MONO-PERC M6-10B-R panels perform in cold weather and on overcast days? Mono-PERC cells outperform older polycrystalline technology in diffuse light conditions. The power temperature coefficient for this series is approximately -0.35%/°C, meaning output can exceed the nameplate rating on cold, sunny days. The multi-busbar design also improves current collection at low irradiance angles, benefiting energy harvest during early morning and late afternoon hours. ### Are the Phono Solar Twinplus MONO-PERC M6-10B-R panels resistant to PID degradation? Yes, Phono Solar declared PID (Potential Induced Degradation) resistance for this series, which is important in high-voltage DC systems operating in humid climates where PID can accelerate long-term power loss. The module's optimized cell circuit design also aimed to minimize hot-spot risk caused by uneven irradiance or partial shading across cells. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/gl-en-twinplus-182-132-10bb-0ebb5473e5ac.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +3.7 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +3.4 pp, +5 yr warranty | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, +3.4 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +50 W, cooler, +3.3 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +3.2 pp, +5 yr warranty | | [Phono Solar PS490M6-22/WH](https://comparepv.com/panel/phono-solar-technology-co-ltd-ps490m6-22-wh) | 490 W | -15 W, -0.6 pp | | [Phono Solar PS495M6-22/WH](https://comparepv.com/panel/phono-solar-technology-co-ltd-ps495m6-22-wh) | 495 W | -10 W, -0.4 pp | | [Phono Solar PS500M6-22/WH](https://comparepv.com/panel/phono-solar-technology-co-ltd-ps500m6-22-wh) | 500 W | -0.2 pp | | [Phono Solar PS510M6-22/WH](https://comparepv.com/panel/phono-solar-technology-co-ltd-ps510m6-22-wh) | 510 W | +0.2 pp | | [Phono Solar NS-520MH-132](https://comparepv.com/panel/phono-solar-ns-520mh-132) | 520 W | Cooler, lighter, +0.6 pp | | [Phono Solar NS-530MH-132](https://comparepv.com/panel/phono-solar-ns-530mh-132) | 530 W | +25 W, cooler, +1.1 pp | | [Phono Solar NS-540MH-132](https://comparepv.com/panel/phono-solar-ns-540mh-132) | 540 W | +35 W, cooler, +1.5 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +85 W, +2.6 pp, +5 yr warranty | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +80 W, +2.4 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/phono-solar-technology-co-ltd-ps505m6-22-wh 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.