--- title: "Hounen Solar HNM7-SHDB144-535/M 535W Solar Panel - Specs & Review | ComparePV" description: "Hounen Solar HNM7-SHDB144-535/M 535W solar panel. Specs: 20.71% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hounen-solar-hnm7-shdb144-535-m" updated: 2026-09-11 --- # Hounen Solar HNM7-SHDB144-535/M Middle of its segment, needs the roof space 8,213 panels in the 435-635 W band, all technologies ## Identity - **Manufacturer:** Hounen Solar - **Model:** HNM7-SHDB144-535/M - **Series:** HNM7-SHDB144 - **Rated power:** 535 W - **Cell technology:** Monocrystalline - **Bifacial:** yes ## How it compares Compared against 435-635 W band, all technologies (8213 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 535 W | 530 W | Typical | | | Module efficiency | 20.71% | 22.26% | Weak - bottom 11% | 10,721 | | Power density | 207.1 | 222.6 | Weak - bottom 11% | 10,764 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 12% | 10,419 | | Weight (kg) | 28.0 kg | 27.3 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.71% | 22.26% | Weak - bottom 11% | 10,721 | | Power density | 207.1 | 222.6 | Weak - bottom 11% | 10,764 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 12% | 10,419 | | Weight per kWp | 52.3 | 52.7 | Typical | 5,807 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Watch out for - **207.1 watts per square metre** - Bottom 11% of the 435-635 W band, against a median of 222.6. - **25 year performance warranty** - Bottom 11% of the 435-635 W band, against a median of 30 yrs. - **20.71% module efficiency** - Bottom 11% of the 435-635 W band, against a median of 22.26%. - **Best for:** Utility-scale, commercial and shaded-installations. - **Not ideal for:** Roofs where every square metre has to count, owners who want a long output guarantee and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 535 W - **Efficiency:** 20.71 % - **Voltage at Pmax (Vmp):** 41.30 V - **Current at Pmax (Imp):** 12.96 A - **Open-circuit voltage (Voc):** 49.60 V - **Short-circuit current (Isc):** 13.71 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.290 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.0 kg - **Area:** 2.58 m2 - **Power density:** 207.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **Output after 30 years:** 438 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10721 of 14005 | | Power density | 10764 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 5807 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **High energy yield via bifacial design** - The bifacial technology enables additional rear-side energy gain of up to 25%, per manufacturer data, translating into real production gains at no extra installation cost, especially over reflective surfaces (gravel, white roofing). - **Competitive power and efficiency in its class** - Power up to 560 Wp and efficiency up to 21.68% put the series on par with Exiom EX540-560M(B), Fellow Energy FE72-18X (both 560 Wp/21.7%), and Premier Energies (560 Wp/21.67%) - HNM7-SHDB144 keeps pace with the leading edge of 144-cell half-cut modules. - **Half-cut cells reduce resistive losses** - 144 half-cut monocrystalline cells lower resistive losses and improve partial-shading tolerance - a meaningful advantage for installations affected by chimneys, parapets, or trees casting shadows in urban settings. - **Robust build for harsh weather conditions** - 3.2mm AR-coated tempered glass plus an IP68 junction box with 3 diodes provide solid protection against moisture, wind, and snow load, supporting reliable operation in tougher climates. - **Large production scale and manufacturer track record** - Hounen Solar (founded in 2010) reports shipping over 320 GW of modules globally by the end of 2025, indicating operational scale and potentially more stable supply chains than smaller, niche manufacturers. ## Cons - **PERC technology instead of TOPCon** - The series relies on older PERC cell technology, while since 2024-2025 leading manufacturers (Trina, JA Solar, LONGi, among others) have shifted to N-type TOPCon cells with lower LID degradation and better high-temperature performance - PERC offers less long-term upgrade headroom. - **Warranty terms below current market benchmarks** - The 12-year product warranty and 25-year linear power warranty reflect an older PERC-generation standard, whereas by 2026 many TOPCon module manufacturers already offer 15-year product and 30-year power warranties. - **No confirmed BNEF Tier 1 status** - Publicly available BNEF Tier 1 lists (Q4 2025/Q1 2026) do not clearly confirm Hounen Solar's Tier 1 status, which can matter for bank financing on larger commercial projects requiring supplier bankability. ## About this series The HNM7-SHDB144 series from Hounen Solar is engineered for installations where maximizing energy yield per square meter of roof or ground space really matters. The panel is built around 144 monocrystalline **half-cut cells**, which reduce resistive losses and improve tolerance to partial shading - a common challenge in urban and industrial installations. The integrated **bifacial technology** allows the module to capture light reflected off the ground as well, boosting energy production by double digit percentages without any extra installation cost. Thanks to **PERC technology**, the module absorbs sunlight more effectively, with an additional reflective layer improving efficiency even at unfavorable angles of incidence. The series also stands out for its stable **anti-PID protection**, translating into a longer lifespan and predictable power degradation over time. Its construction, featuring tempered AR coated glass and a sealed IP68 junction box, allows the module to withstand harsh weather conditions such as wind, snow, and humidity. Thanks to its **strong low-light performance**, the panel also performs well in regions with less sunshine, such as Poland, where the number of overcast days is a key factor in module selection. The HNM7-SHDB144 is a solid choice for installers and investors seeking a balance between performance, durability, and long-term return on investment. ## Notable figures - Module efficiency of 20.7% is 1.1pp below average for \*\*database\*\* panels (median: 21.8%) - 207.1 W/m² power density is 11.0 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - Temperature coefficient of -0.35%/°C is 0.05pp worse than \*\*database\*\* median (-0.30%/°C) - higher losses in summer heat - At 28.0 kg (1.5 kg above \*\*database\*\* median of 26.5 kg), requires checking roof load capacity - Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof ## Questions ### How does bifacial technology in the HNM7-SHDB144 panels differ from standard single-sided modules? HNM7-SHDB144 panels capture light on both the front and rear sides of the module, harvesting radiation reflected from the roof, ground, or a bright surface beneath the array. With proper installation (e.g., over light gravel or reflective sheeting), energy yield can increase by up to several percent compared to a classic monofacial panel, with no additional wiring or inverter costs. ### What warranty does Hounen Solar offer on the HNM7-SHDB144 series? Hounen Solar provides a 12-year product warranty covering material and workmanship defects, plus a 25-year linear power output warranty. This means that after 25 years of operation the panel is guaranteed to still produce energy at the level defined in the power degradation schedule, which is standard for modern PERC modules with half-cut cells. ### Are HNM7-SHDB144 panels suitable for installation in low-sunlight regions like Poland? Yes, the HNM7-SHDB144 series delivers strong performance under low-light conditions, which matters in climates with many overcast days. Half-cut cells reduce resistive losses, while PERC technology with an added reflective layer improves light absorption even at unfavorable angles of incidence, typical of autumn and winter months. ### What does a 560 Wp power rating mean in practice for a residential system size? A maximum power rating of 560 Wp means a single HNM7-SHDB144 panel can generate up to 560 watts under standard test conditions (STC). A typical 10 kWp system needs around 18 modules, reducing both the panel count and the mounting area required compared to older, less efficient 400-450 Wp models. ### Does PID degradation protection in the HNM7-SHDB144 actually affect panel lifespan? Yes, Potential Induced Degradation (PID) can reduce module power output by up to several percent in the first years of operation without proper safeguards, especially at higher system voltages in large arrays. The anti-PID protection built into the HNM7-SHDB144 stabilizes performance over time, resulting in a more predictable, slower power decline consistent with the linear power warranty. ### Is the IP68-rated junction box on the HNM7-SHDB144 sufficient for harsh weather installations? Yes, IP68 is the highest ingress protection rating, guarding against dust and full water submersion, which keeps electrical connections reliable even during heavy rain or snow. Combined with tempered AR glass, the panel withstands strong wind, snow loads, and prolonged moisture, making it a solid choice for both rooftop and ground-mounted installations in variable climates. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1767944347309513-33b2a204fa50.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +4.3 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +4.1 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +4.1 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +4.0 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.9 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +3.8 pp, +5 yr warranty | | [Hounen Solar HNM7-SHDB144-540/M](https://comparepv.com/panel/hounen-solar-hnm7-shdb144-540-m) | 540 W | Very close match | | [Hounen Solar HNM7-SHDB144-545/M](https://comparepv.com/panel/hounen-solar-hnm7-shdb144-545-m) | 545 W | +10 W, +0.4 pp | | [Hounen Solar HNM7-SHDB144-550/M](https://comparepv.com/panel/hounen-solar-hnm7-shdb144-550-m) | 550 W | +15 W, +0.6 pp | | [Hounen Solar HNM7-SHDB144-555/M](https://comparepv.com/panel/hounen-solar-hnm7-shdb144-555-m) | 555 W | +20 W, +0.8 pp | | [Hounen Solar HNM7-SHDB144-560/M](https://comparepv.com/panel/hounen-solar-hnm7-shdb144-560-m) | 560 W | +25 W, +1.0 pp | | [Hounen Solar HNM7-UHLDD144-565/M](https://comparepv.com/panel/hounen-solar-hnm7-uhldd144-565-m) | 565 W | Cooler, +1.2 pp, +5 yr warranty | | [Hounen Solar HNM7-UHLDD144-570/M](https://comparepv.com/panel/hounen-solar-hnm7-uhldd144-570-m) | 570 W | Cooler, +1.4 pp, +5 yr warranty | | [Hounen Solar HNM7-UHLDD144-575/M](https://comparepv.com/panel/hounen-solar-hnm7-uhldd144-575-m) | 575 W | Cooler, +1.6 pp, +5 yr warranty | | [Hounen Solar HNM7-UHLDD144-580/M](https://comparepv.com/panel/hounen-solar-hnm7-uhldd144-580-m) | 580 W | Cooler, +1.7 pp, +5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +115 W, cooler, +4.5 pp | --- Source: https://comparepv.com/panel/hounen-solar-hnm7-shdb144-535-m Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.