--- title: "Horay Solar HS510TC-MHA-D 510W Solar Panel - Specs & Review | ComparePV" description: "Horay Solar HS510TC-MHA-D 510W solar panel. Specs: 23.10% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/horay-solar-hs510tc-mha-d" updated: 2026-09-11 --- # Horay Solar HS510TC-MHA-D Strong in heat, no clear weak spot 432 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** Horay Solar - **Model:** HS510TC-MHA-D - **Series:** HS 186R-120 TC-D Alpine - **Rated power:** 510 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 500-550 W (432 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 510 W | 510 W | Typical | | | Module efficiency | 23.10% | 22.73% | Strong - top 23% | 1,570 | | Power density | 230.0 | 227.4 | Typical | 2,133 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 10% | 1,309 | | Weight (kg) | 26.0 kg | 27.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.10% | 22.73% | Strong - top 23% | 1,570 | | Power density | 230.0 | 227.4 | Typical | 2,133 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 10% | 1,309 | | Weight per kWp | 51.0 | 52.4 | Typical | 4,341 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 10% of the TOPCon 500-550 W segment, against a median of -0.290. Ranked 1,309th in the whole database. - **23.10% module efficiency** - Top 23% of the TOPCon 500-550 W segment, against a median of 22.73%. - **Best for:** Residential, commercial, shaded-installations and cold-climate. ## Specification ### Electrical - **Rated power (Pmax):** 510 W - **Efficiency:** 23.10 % - **Voltage at Pmax (Vmp):** 36.80 V - **Current at Pmax (Imp):** 13.86 A - **Open-circuit voltage (Voc):** 44.10 V - **Short-circuit current (Isc):** 14.64 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:** TOPCon - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 1955 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.0 kg - **Area:** 2.22 m2 - **Power density:** 230.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 446 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1570 of 14005 | | Power density | 2133 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 4341 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Up to 23.1% efficiency — peer-group leader** - Peak efficiency of 23.1% slightly edges out JA Solar JAM60S40 LR (23.0%) and Sunlike SKT510 (22.93%), and significantly outperforms Trina Solar Vertex (21.2%). Even the bottom of the series range — 22.2% — stays above the peer-group median. - **N-type TOPCon bifacial — zero LID, better temperature coefficient** - N-type cells eliminate LID/LeTID degradation risk common in P-type PERC technology. TOPCon temperature coefficient for Pmax is approximately -0.30%/°C vs. ~-0.35%/°C for PERC (Gebhardt et al. 2025, Progress in Photovoltaics), reducing power losses on hot days. Bifaciality of ~80–90% enables additional yield from ground-reflected irradiance. - **30-year linear power warranty** - The manufacturer commits to warranted output for 30 years — among the longest standards in the 490–510 Wp class. Earlier-generation series from Trina Solar and JA Solar commonly carried 25-year power warranties. Workmanship (product) warranty stands at 15 years. - **SMBB half-cut cells (120 cells, 182 mm) — lower resistive losses** - Super Multi Busbar architecture reduces contact resistance and thermal stress at busbars. Halving the cells limits shading mismatch losses and mechanical crack propagation — each half-cell string operates as an independent circuit, boosting reliability in industrial and agrivoltaic installations. - **BNEF Tier 1 / bankable since Q1 2025** - Horay Solar joined the BNEF Tier 1 bankable list in Q1 2025, confirming eligibility for non-recourse project financing. This status is required by most banks and infrastructure funds financing utility-scale PV projects above 1 MW across Europe. ## Cons - **Limited manufacturing scale (~2,500 MW/yr)** - Horay Solar's annual production capacity of approximately 2,500 MW contrasts sharply with JA Solar (>60 GW/yr) and Trina Solar (>50 GW/yr). For utility-scale orders above 10 MW, buyers may face extended lead times or limited availability of specific wattage bins within the 490–510 Wp range. - **Short BNEF Tier 1 track record** - Horay Solar only entered the BNEF Tier 1 ranking in Q1 2025, while JA Solar and Trina Solar have held Tier 1 status for over a decade. Some European project finance teams require a multi-year Tier 1 history when assessing module bankability for projects above 5 MW, potentially extending due diligence timelines. ## About this series The Horay Solar HS 186R-120 TC-D Alpine series is designed for stable energy production under real-world operating conditions, not just in a laboratory setting. The use of **N-type cells** naturally reduces LID degradation, which helps maintain high performance over the long term. The modules utilize **half-cell SMBB technology**, which improves current collection and reduces heat loss - a significant advantage in high-irradiance and high-current applications. Another key feature is **good performance in low light**, which results in more predictable output in the morning, evening, and cloudy days, typical of the Polish climate. The reinforced design and **resistance to harsh environments** (including salt fog and ammonia tests) make it suitable for industrial and agricultural sites. It is a good choice for residential, commercial, and PV farm installations, where durability, parameter repeatability, and safe operation are important. ## Notable figures - Efficiency of 23.1% matches the \*\*TOPCon 500-550W\*\* median - At 230.0 W/m² power density, roof space requirements are typical for \*\*TOPCon 500-550W\*\* panels - At -0.28%/°C, hot weather performance is typical for \*\*TOPCon 500-550W\*\* panels - Weight of 26.0 kg is typical for \*\*TOPCon 500-550W\*\* panels - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty does the Horay Solar HS 186R-120 TC-D Alpine series carry? The HS 186R-120 TC-D Alpine series comes with a 15-year product warranty and a 30-year power output warranty. This means the manufacturer guarantees minimum power retention levels for three decades of operation. A 30-year linear power warranty is among the longer standards available on the market and is an important factor when calculating the return on investment for larger PV installations. ### What does bifacial mean for the HS 186R-120 TC-D Alpine panel, and does it matter on a rooftop? Bifacial means the module generates electricity from both the front and rear surfaces by capturing reflected irradiance. On a pitched roof the rear-side gain is modest, though a light-colored substrate (light-gray tiles, white membrane) helps slightly. The real benefit of bifacial technology is most pronounced in ground-mounted systems with high-albedo surfaces or on flat roofs with elevated racking, where a few percent of additional yield is realistic. ### How does the Horay Solar Alpine 510 Wp panel perform in winter and on overcast days? The Alpine HS 186R-120 TC-D series uses TOPCon N-type cells combined with SMBB half-cut technology, which improves current collection at low irradiance levels. This means the modules produce power during morning and evening hours and on cloudy days typical of Central European climates. N-type cells also show lower susceptibility to LID (light-induced degradation), resulting in more stable output over the full warranty period. ### Is the HS 186R-120 TC-D Alpine series suitable for agricultural or industrial environments? Yes. The Alpine series modules have passed salt mist and ammonia resistance tests, making them a suitable choice for agricultural settings (livestock farms, slurry environments) and industrial sites. The reinforced mechanical structure supports safe operation under wind and snow loads common in Polish and broader European field conditions, including large open-field PV farms. ### How does the TOPCon technology in Horay Solar panels compare to older PERC modules? TOPCon uses N-type cells with a tunneling oxide passivation layer that reduces charge carrier recombination. In practice this means higher conversion efficiency and lower LID compared to conventional PERC (P-type) cells. The HS 186R-120 TC-D Alpine reaches 510 Wp, delivering more energy from the same footprint than similarly sized legacy PERC modules. Over a long operating horizon this translates into a lower LCOE. ### Are the Horay Solar HS 186R-120 TC-D Alpine panels still available for purchase? Yes, the HS 186R-120 TC-D Alpine series is active and currently available. Horay Solar is a Tier 1 manufacturer headquartered in China with an annual production capacity of 2.5 GW and distributes modules across European markets. Before placing a large order, it is advisable to confirm current stock levels and lead times directly with your chosen distributor, especially for commercial-scale projects. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HS186R-120TC-D-Alpine-510W-8233a7adf01c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +1.9 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +1.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +50 W, cooler, +1.7 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +1.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +45 W, cooler, +1.5 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.4 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.4 pp | | [Horay Solar HS490TC-MHA](https://comparepv.com/panel/horay-solar-hs490tc-mha) | 490 W | -20 W, lighter, -0.9 pp | | [Horay Solar HS495TC-MHA](https://comparepv.com/panel/horay-solar-hs495tc-mha) | 495 W | -15 W, lighter, -0.7 pp | | [Horay Solar HS495TC-MHC-D](https://comparepv.com/panel/horay-solar-hs495tc-mhc-d) | 495 W | -15 W, heavier, -0.9 pp | | [Horay Solar HS500TC-MHA](https://comparepv.com/panel/horay-solar-hs500tc-mha) | 500 W | -10 W, lighter, -0.5 pp | | [Horay Solar HS500TC-MHC-D](https://comparepv.com/panel/horay-solar-hs500tc-mhc-d) | 500 W | -10 W, heavier, -0.7 pp | | [Horay Solar HS505TC-MHA-D](https://comparepv.com/panel/horay-solar-hs505tc-mha-d) | 505 W | -0.2 pp | | [Horay Solar HS505TC-MHC-D](https://comparepv.com/panel/horay-solar-hs505tc-mhc-d) | 505 W | Heavier, -0.4 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +40 W, lighter, +1.3 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +30 W, lighter, +1.3 pp | --- Source: https://comparepv.com/panel/horay-solar-hs510tc-mha-d 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.