--- title: "Horay Solar HS475TC-MHB 475W Solar Panel - Specs & Review | ComparePV" description: "Horay Solar HS475TC-MHB 475W solar panel. Specs: 23.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/horay-solar-hs475tc-mhb" updated: 2026-09-11 --- # Horay Solar HS475TC-MHB Light for its output, no clear weak spot 301 panels in the segment N-type 450-500 W ## Identity - **Manufacturer:** Horay Solar - **Model:** HS475TC-MHB - **Series:** HS 191R-108 TC Basin - **Rated power:** 475 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 450-500 W (301 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 475 W | 470 W | Typical | | | Module efficiency | 23.30% | 22.52% | Strong - top 15% | 1,017 | | Power density | 232.7 | 225.2 | Strong - top 19% | 1,189 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 21% | 1,309 | | Weight (kg) | 21.0 kg | 23.7 kg | Strong - top 5% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.30% | 22.52% | Strong - top 15% | 1,017 | | Power density | 232.7 | 225.2 | Strong - top 19% | 1,189 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 21% | 1,309 | | Weight per kWp | 44.2 | 49.5 | Strong - top 5% | 396 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **44.2 kg per kWp** - Top 5% of the N-type 450-500 W segment, against a median of 49.5. Ranked 396th in the whole database. - **23.30% module efficiency** - Top 15% of the N-type 450-500 W segment, against a median of 22.52%. - **232.7 watts per square metre** - Top 19% of the N-type 450-500 W segment, against a median of 225.2. - **Best for:** Weight-limited structures, small roofs that need every watt and roofs where every square metre counts. ## Specification ### Electrical - **Rated power (Pmax):** 475 W - **Efficiency:** 23.30 % - **Voltage at Pmax (Vmp):** 33.60 V - **Current at Pmax (Imp):** 14.14 A - **Open-circuit voltage (Voc):** 39.61 V - **Short-circuit current (Isc):** 15.06 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.280 %/degC - **Temperature coefficient of Voc:** -0.230 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 108 ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 2.04 m2 - **Power density:** 232.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 415 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1017 of 14005 | | Power density | 1189 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 396 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon cell technology** - N-type TOPCon cells exhibit annual degradation of ~0.35%/yr vs. ~0.55%/yr for older P-type PERC, with near-zero LID (Light-Induced Degradation). This translates to a meaningfully higher cumulative energy yield over a 30-year system lifetime compared to PERC modules of equivalent STC power rating. - **30-year linear power warranty** - Horay Solar provides a 30-year linear power warranty — above the market norm where most mid-range series cap at 25 years. The extended warranty horizon lowers system LCOE and satisfies bankability requirements for commercial projects that undergo lender due diligence. - **BNEF Tier 1 bankable manufacturer** - Horay Solar is listed on the BloombergNEF Tier 1 Module Manufacturer register (confirmed Q1 2026), signaling acceptance by project finance institutions. For utility-scale and C&I installations, Tier 1 status is a prerequisite for structuring non-recourse project finance. - **High power density – 182 mm half-cut format** - The 108-cell, 182 mm half-cut configuration delivers up to 23.3% efficiency (475 Wp variant), reduces resistive losses by ~3%, and improves partial-shade tolerance. At 23.3%, the top variant matches the direct competitor LONGi Hi-MO X10 Explorer (23.3%) within the same 475 Wp power class. ## Cons - **Efficiency below segment leaders** - Peak module efficiency of 23.3% (475 Wp variant) trails both JA Solar JAM54D40 LB and Astronergy ASTRO N7s 2.0, which reach 23.8% at the same nameplate power. The 0.5 pp gap translates to ~2.1% less energy per unit rooftop area — a meaningful disadvantage on space-constrained residential or commercial rooftops. - **Monofacial only — no bifacial option** - The HS 191R-108 TC Basin series is not available in a bifacial variant (is\_bifacial: false). On high-albedo surfaces (light gravel, concrete, snow; albedo 0.25–0.50), bifacial modules typically capture 5–15% additional rear-side irradiance, a gain entirely unavailable in this series. - **12-year product warranty** - The product (materials & workmanship) warranty is 12 years, whereas leading N-type TOPCon series from LONGi (Hi-MO X10) and JA Solar (Deep Blue 4.0 Pro) carry 15-year product warranties. The shorter coverage may be a limiting factor in projects subject to strict lender bankability requirements or markets with mandatory long-term asset insurance. ## About this series Horay Solar HS 191R-108 TC Basin photovoltaic panels are an advanced solution based on innovative architecture that significantly increases the efficiency of residential and commercial installations. The key differentiator of this series is **N-type TOPCon technology**, which allows for significantly better energy yields even in low light conditions or at high ambient temperatures. Thanks to the use of the **182mm rectangular cell** format, these modules offer higher power density while maintaining optimal dimensions, solving the problem of limited installation space on roofs with complex geometry. The Basin series is characterized by exceptional durability and **minimal light-induced degradation**, which translates into stable power production for decades. They stand out from the competition due to their precise aesthetic refinement and excellent temperature coefficient of power, making the system work more efficiently on hot days. This is an ideal choice for investors seeking **maximum efficiency per square meter** who refuse to compromise between modern design and technical reliability. Utilizing this series is an investment in energy stability that reduces operating costs thanks to **higher conversion efficiency** and resistance to external factors. ## Notable figures - Efficiency of 23.3% is 0.8pp above the \*\*N-type 450-500W\*\* median (22.5%) - 232.7 W/m² power density - 7.5 W/m² more than \*\*N-type 450-500W\*\* median (225.2 W/m²), more power per roof area - Temperature coefficient of -0.28%/°C matches the \*\*N-type 450-500W\*\* median - At 21.0 kg, this panel is 2.7 kg lighter than \*\*N-type 450-500W\*\* median (23.7 kg) - easier handling during installation - Ranked #1017 out of 14005 panels for efficiency in the database ## Questions ### What warranty does the Horay Solar HS 191R-108 TC Basin series come with? The HS 191R-108 TC Basin series includes a 12-year product warranty covering manufacturing defects and a 30-year linear power output warranty. This means the manufacturer guarantees that panel performance will remain above specified thresholds for three decades — one of the stronger warranty packages available for N-type TOPCon modules. The long power warranty directly supports a predictable return on investment. ### What is N-type TOPCon technology used in the Basin series and is it worth the premium? TOPCon (Tunnel Oxide Passivated Contact) is an N-type silicon cell technology that minimizes carrier recombination at the cell surface through tunnel oxide passivation. In real-world terms, this delivers higher conversion efficiency compared to standard PERC cells, better performance under diffuse and low-light conditions, and significantly lower light-induced degradation (LID). For the system owner, this translates to more kilowatt-hours per year from the same roof area. ### How many Horay Solar HS 191R-108 TC Basin panels do I need for a 10 kWp residential system? Each HS 191R-108 TC Basin module has a maximum power output of 475 Wp. To reach 10 kWp, you would need approximately 21 to 22 panels. The exact count depends on the installer's string design and inverter MPPT input specifications. The high per-module wattage of 475 Wp means fewer panels are required to hit a given system size, reducing overall BoS costs including mounting hardware and DC cabling. ### Do the HS 191R-108 TC Basin panels perform well during hot summer weather? Yes. N-type TOPCon technology offers a more favorable temperature coefficient of power than older PERC cells, meaning output drops less as module temperature rises. On hot days when panel temperature can exceed 60°C, the Basin series loses proportionally less power than first-generation mono PERC modules. This thermal advantage is especially relevant in climates with increasingly intense summers and contributes to a higher annual energy yield. ### Is the Horay Solar HS 191R-108 TC Basin a bifacial panel? No, the HS 191R-108 TC Basin is a monofacial module — energy is harvested only through the front cell surface. For typical pitched roof installations, this is a standard and fully adequate configuration. Bifacial gain is most meaningful in ground-mounted systems over high-albedo surfaces; on dark roofing materials, the rear-side contribution is negligible, so monofacial construction is the practical and cost-efficient choice here. ### Is Horay Solar a reliable manufacturer and can I trust their long-term warranty commitments? Horay Solar holds Tier 1 status according to BloombergNEF's bankability classification, indicating a financially stable company capable of honoring long-term warranty obligations. Manufacturing facilities are located in China, consistent with most leading PV suppliers including Longi, JA Solar, and Trina Solar. Tier 1 status combined with a 30-year power warranty provides a solid basis for assessing manufacturer reliability before making a purchase decision. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HS191R-108TC-Basin-475W-fb6755831509.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +35 W, cooler, +1.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +20 W, cooler, +1.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +30 W, cooler, +1.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +15 W, cooler, +1.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +25 W, cooler, +1.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +25 W, cooler, +1.2 pp | | [Horay Solar HS455TC-MHB](https://comparepv.com/panel/horay-solar-hs455tc-mhb) | 455 W | -20 W, -1.0 pp | | [Horay Solar HS460TC-MHB](https://comparepv.com/panel/horay-solar-hs460tc-mhb) | 460 W | -15 W, -0.7 pp | | [Horay Solar HS465TC-MHB](https://comparepv.com/panel/horay-solar-hs465tc-mhb) | 465 W | -10 W, -0.5 pp | | [Horay Solar HS470TC-MHB](https://comparepv.com/panel/horay-solar-hs470tc-mhb) | 470 W | -0.3 pp | --- Source: https://comparepv.com/panel/horay-solar-hs475tc-mhb 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.