--- title: "Phono Solar PS545M8-24/TH Solar Panel: Specs & Datasheet | ComparePV" description: "Phono Solar PS545M8-24/TH solar panel. Specs: 21.10% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/phono-solar-phono-solar-technology-co-ltd-ps545m8-24-th" image: "https://comparepv.com/og/panel/phono-solar-phono-solar-technology-co-ltd-ps545m8-24-th.png" updated: 2026-09-11 --- # Phono Solar PS545M8-24/TH Space saver, short guarantee 709 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** Phono Solar - **Model:** PS545M8-24/TH - **Series:** Twinplus Module Series HIGH EFFICIENCY MONO-PERC BM6-10B-T (540-560W) - **Rated power:** 545 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 500-550 W (709 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 545 W | 535 W | Strong - top 12% | | | Module efficiency | 21.10% | 20.90% | Strong - top 21% | 9,365 | | Power density | 211.0 | 209.0 | Strong - top 18% | 9,380 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight (kg) | 28.0 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 | 21.10% | 20.90% | Strong - top 21% | 9,365 | | Power density | 211.0 | 209.0 | Strong - top 18% | 9,380 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight per kWp | 51.4 | 53.0 | Typical | 4,778 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 22% | 9,912 | ### Strengths - **211.0 watts per square metre** - Top 18% of the PERC 500-550 W segment, against a median of 209.0. - **21.10% module efficiency** - Top 21% of the PERC 500-550 W segment, against a median of 20.90%. ### Watch out for - **25 year performance warranty** - Bottom 22% of the PERC 500-550 W segment, against a median of 30 yrs. - **Best for:** Commercial, utility-scale, shaded-installations and residential. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 21.10 % - **Voltage at Pmax (Vmp):** 41.45 V - **Current at Pmax (Imp):** 13.15 A - **Open-circuit voltage (Voc):** 49.49 V - **Short-circuit current (Isc):** 13.72 A ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.0 kg - **Area:** 2.58 m2 - **Power density:** 211.0 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:** 447 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9365 of 14129 | | Power density | 9380 of 14129 | | Temperature coefficient | 10489 of 14129 | | Weight | 4778 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **High energy yield from bifacial design** - The bifacial construction allows for additional rear-side power gain of up to 25%, depending on ground albedo and mounting height, meaningfully boosting annual energy yield on high-reflectivity surfaces (gravel, white roofing, snow). - **Proven Tier-1 bankability** - Phono Solar has held BNEF Tier 1 status continuously since 2014, confirming that its modules have secured non-recourse project financing from independent commercial banks on projects above 10 MW. The manufacturer is backed by the Sinomach group (Fortune Global 500), reducing risk for institutional investors. - **Efficiency on par with segment leaders** - Efficiency up to 21.68% is essentially on par with its closest peer comparables - Exiom EX540-560M(B) (21.7%), Fellow Energy FE72-18X (21.7%), and Premier Energies 144 HC PERC Bifacial (21.67%) - showing the series is not technologically behind the best offers in the 540-560W power class. - **Enhanced PID and hot-spot resistance** - The optimized electrical design, combined with multi-busbar technology and half-cut cells, reduces losses under partial shading and hot-spot risk, directly supporting long-term durability alongside the 25-year power warranty. ## Cons - **Production discontinued in 2024** - The Twinplus BM6-10B-T series was withdrawn from the lineup (released 2021, discontinued 2024), meaning limited availability of matching replacement modules for existing array expansions and potentially longer lead times for future warranty service claims. - **PERC technology superseded by N-type** - Mono-PERC cells, while solid performers, are an older-generation technology compared to N-type TOPCon/HJT, which offer lower LID/LeTID degradation and better high-temperature behavior - the series' discontinuation coincided with the market's broader shift toward N-type cells. ## About this series The Phono Solar Twinplus Module Series HIGH EFFICIENCY MONO-PERC BM6-10B-T (540-560W) is designed for maximum energy yield from the same surface area - especially where maximum output per square meter matters and stable performance in real-world conditions is crucial. The use of **half-cell PERC technology** reduces connection losses and helps maintain performance when parts of the module are intermittently shaded. Additionally, **multi busbar technology** improves current collection from the cells and supports higher efficiency in practice, not just in the lab. The module is also prepared for demanding environments - **enhanced PID resistance** and optimized electrical design reduce the risk of hot spots, contributing to installation longevity. This is an excellent choice for PV farms, commercial rooftops, and large residential systems, where **reliable output in harsh conditions and low light** matters, along with safe operation for years. ## Notable figures - Efficiency of 21.1% matches the \*\*PERC 500-550W\*\* median - Power density of 211.0 W/m² matches the \*\*PERC 500-550W\*\* median - Temperature coefficient of -0.35%/°C matches the \*\*PERC 500-550W\*\* median - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces - Ranked #9365 out of 14129 panels for efficiency in the database ## Questions ### Is the Phono Solar Twinplus BM6-10B-T (540-560W) series still available for purchase? The BM6-10B-T series has been discontinued and is no longer actively manufactured by Phono Solar. Limited stock may still be available through distributors' warehouses, but availability is patchy. Before committing to a purchase, verify inventory with your supplier and consider current Phono Solar models as an alternative. ### How much extra energy can the bifacial design of the Twinplus BM6-10B-T actually deliver? The BM6-10B-T bifacial modules capture reflected irradiance on their rear side, delivering an additional 5-25% energy yield compared to a monofacial equivalent. The actual gain depends on the albedo of the surface beneath the array - light-colored membranes, gravel, or snow-covered ground maximize the benefit. Ground-mount systems and flat roofs with reflective surfaces get the most out of the bifacial design. ### What warranties does Phono Solar offer on the Twinplus BM6-10B-T panels? Phono Solar provides a 12-year product warranty covering material and workmanship defects, plus a 25-year linear power output warranty guaranteeing at least 80% of rated power after 25 years of operation. These terms are in line with leading Tier 1 manufacturers and reflect Phono Solar's strong bankability for project financing. ### How do the Twinplus BM6-10B-T panels perform during hot summer days? The module's power temperature coefficient is -0.35%/°C, meaning each degree above 25°C (STC) reduces output by 0.35%. This is a competitive figure for PERC technology and translates to stable energy production during extended heat waves. Enhanced PID resistance further protects the modules from performance degradation in hot, humid operating conditions. ### What is the half-cut cell and multi-busbar technology in the Twinplus BM6-10B-T, and why does it matter? Half-cut cells reduce operating current by half, lowering resistive (I²R) losses and heat build-up, which improves both real-world efficiency and long-term reliability. The 10-busbar (10BB) design shortens current collection paths and reduces the risk of microcracks and hot spots. Together, these features deliver noticeably higher energy yield compared to older 5-busbar full-cell PERC modules. ### What type of installations are the Phono Solar Twinplus BM6-10B-T 540-560W panels best suited for? With up to 560W peak power and large module dimensions, the BM6-10B-T is best suited for utility-scale solar farms, commercial flat-roof installations, and large prosumer systems where maximizing watts per square meter is critical. The bifacial design provides an additional advantage in ground-mount systems with reflective ground surfaces. Due to the module's large size and weight, it is less practical for small residential pitched rooftops. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/gl-en-twinplus-182-144-10bb-transparent-7727ae309633.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +3.9 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.7 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +3.6 pp, +5 yr warranty | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, +3.6 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +3.4 pp, +5 yr warranty | | [Phono Solar PS535M8GF-24/TH](https://comparepv.com/panel/phono-solar-ps535m8gf-24-th) | 535 W | Cooler, heavier, +5 yr warranty | | [Phono Solar PS540M8-24/TH](https://comparepv.com/panel/phono-solar-phono-solar-technology-co-ltd-ps540m8-24-th) | 540 W | -0.2 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +105 W, cooler, +4.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +85 W, cooler, +3.3 pp | --- Source: https://comparepv.com/panel/phono-solar-phono-solar-technology-co-ltd-ps545m8-24-th Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.