--- title: "Horay Solar HS420TC-MHO-D Solar Panel: Specs & Datasheet | ComparePV" description: "Horay Solar HS420TC-MHO-D solar panel. Specs: 21.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/horay-solar-hs420tc-mho-d" image: "https://comparepv.com/og/panel/horay-solar-hs420tc-mho-d.png" updated: 2026-09-11 --- # Horay Solar HS420TC-MHO-D Strong in heat, heavy for its output 1,220 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Horay Solar - **Model:** HS420TC-MHO-D - **Series:** HS 182-108 TC-D Ocean - **Rated power:** 420 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1220 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 420 W | 435 W | Weak - bottom 16% | | | Module efficiency | 21.50% | 22.00% | Weak - bottom 17% | 8,022 | | Power density | 215.1 | 220.2 | Weak - bottom 18% | 7,946 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,347 | | Weight (kg) | 24.0 kg | 22.0 kg | Weak - bottom 13% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.50% | 22.00% | Weak - bottom 17% | 8,022 | | Power density | 215.1 | 220.2 | Weak - bottom 18% | 7,946 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,347 | | Weight per kWp | 57.1 | 51.5 | Weak - bottom 13% | 11,169 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 4% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 1,347th in the whole database. ### Watch out for - **57.1 kg per kWp** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 51.5. - **21.50% module efficiency** - Bottom 17% of the TOPCon 400-450 W segment, against a median of 22.00%. - **215.1 watts per square metre** - Bottom 18% of the TOPCon 400-450 W segment, against a median of 220.2. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 420 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 32.44 V - **Current at Pmax (Imp):** 12.95 A - **Open-circuit voltage (Voc):** 38.73 V - **Short-circuit current (Isc):** 14.01 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:** 108 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.0 kg - **Area:** 1.95 m2 - **Power density:** 215.1 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 % - **Output after 30 years:** 367 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8022 of 14129 | | Power density | 7946 of 14129 | | Temperature coefficient | 1347 of 14129 | | Weight | 11169 of 14129 | | Warranty | 21 of 14129 | ## Pros - **30-year linear power warranty** - The manufacturer guarantees ≥87.4% of nominal power after 30 years of operation, directly outperforming Luxor Solar ECO LINE N-Type NON-REFLECT (25 years/87.5%) and Seraphim Nebula (standard 25 years). A longer linear warranty horizon simplifies LCOE modeling and is an asset when securing project finance for commercial installations. - **Bifacial N-type TOPCon with SMBB** - A bifaciality factor above 80% enables an additional 10-20% energy yield from the rear side under suitable albedo conditions (gravel, white roofing membrane, snow). N-type cells degrade at ~0.4%/year versus ~0.5-0.7%/year for PERC, while the SMBB design reduces resistive losses and lowers the risk of hot-spots in half-cut cell configurations. - **Temperature coefficient Pmax -0.28%/°C** - The -0.28%/°C Pmax coefficient outperforms Luxor ECO LINE N-Type (-0.30%/°C) and is significantly better than typical PERC modules (-0.36%/°C). At a cell temperature of 65°C - common during Central European summer peaks - the gap versus PERC translates to roughly 2.2 percentage points less power loss, yielding measurably higher output on hot days. - **BNEF Tier-1 confirmed Q1 2026** - Horay Solar appears on the BloombergNEF Tier-1 Module Manufacturer list and maintained that status in Q1 2026, confirming bankability and meeting the due diligence requirements of project finance institutions. With 16 years on the market (since 2010) and ~2.5 GW/year of capacity, the manufacturer is recognized by project funds and insurers worldwide. ## Cons - **Small production scale vs. market leaders** - Horay Solar's manufacturing capacity of ~2.5 GW/year is a fraction of the top players: LONGi (~70 GW), JA Solar (~50 GW), and Trina Solar (~30 GW). For commercial projects requiring multi-MW deliveries within tight schedules, this may limit pricing negotiation leverage and supply-chain continuity assurances compared to top-5 global manufacturers. ## About this series The Horay Solar HS 182-108 TC-D Ocean series is designed for installations where high power density, predictable performance in varying conditions, and easy integration with popular mounting systems are crucial. The use of **N-type cells in a half-cut configuration** helps to minimize losses and stabilize output, especially under partial shading and uneven sunlight exposure. The manufacturer emphasizes **SMBB technology**, which improves current collection from the cell and supports even module performance over a longer lifespan. In practice, this translates to **improved energy production in low-light conditions** and greater resistance to typical degradation issues. It is a good choice for residential and commercial rooftops where cost-effectiveness, aesthetics, and reliability are key. The Ocean series also offers **a long, linear power warranty**, which simplifies investment planning and sets it apart from many competing modules in this segment. ## Notable figures - At 21.5% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - Power density of 215.1 W/m² is 5.1 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - needs more roof space - At -0.28%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - Weight of 24.0 kg is 2.0 kg above \*\*TOPCon 400-450W\*\* median (22.0 kg) - verify structural support - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty does the Horay Solar HS 182-108 TC-D Ocean series come with? Horay Solar backs the Ocean series with a 15-year product warranty covering material defects and workmanship, plus a 30-year linear power output warranty. The linear degradation schedule means the panel maintains a guaranteed minimum output across three decades, making it straightforward to model LCOE and return on investment. This extended power warranty sets the Ocean series apart from many competing modules in the same price bracket. ### What is TOPCon technology used in the Ocean series, and is it better than PERC? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology featuring passivated tunnel oxide contacts. Compared to standard PERC, it delivers higher module efficiency (up to ~22.5% for the Ocean series) and significantly lower LID (Light Induced Degradation). For the end user this translates to more kilowatt-hours from the same roof footprint and a more stable output curve over the entire system lifetime. ### Is the HS 182-108 TC-D Ocean a bifacial panel, and how much extra energy can the rear side generate? Yes, the Ocean series is a bifacial dual-glass module. The rear side captures albedo light reflected from the ground or mounting surface, potentially boosting annual yield by several percentage points depending on surface reflectivity (white gravel, concrete, light-colored roofing membrane, or snow). The bifacial gain is greatest in ground-mount systems or flat-roof installations with a high-albedo surface underneath the array. ### Is the Horay Solar HS 182-108 TC-D Ocean suitable for a residential pitched roof installation? Yes, the module dimensions (1722×1134×30 mm) and weight of approximately 24 kg fall within the standard range for residential prosumer systems. The 108 half-cut cell layout minimizes mismatch losses from partial shading caused by chimneys, antennas, or dormers. The Ocean series is compatible with standard aluminum racking systems for tile, metal tile, and trapezoidal sheet roofs, helping keep overall BoS costs in check. ### How does the Horay Solar Ocean series perform in overcast conditions and cold temperatures? The N-type TOPCon cells carry a low temperature coefficient of Pmax at -0.28%/°C, meaning the panel loses less power on hot summer days compared to PERC modules. The SMBB (Super Multi Busbar) design improves current collection under diffuse irradiance, boosting output on cloudy days relative to older cell generations. Both advantages are especially relevant in Central European climates with a high proportion of overcast days throughout the year. ### Is Horay Solar a reliable Tier 1 manufacturer worth trusting for a long-term installation? Yes, Horay Solar is listed as a Tier 1 PV module manufacturer by independent rating agencies including BloombergNEF. Headquartered in China, the company operates its own integrated cell and module production lines. Tier 1 status confirms the manufacturer has the financial stability and production maturity required to honor its long-term power output warranties for the full declared 30-year guarantee period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HS182-108TC-D-Ocean-440W-8b3c61675045.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +45 W, lighter, +2.3 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +45 W, cooler, +2.3 pp | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +50 W, +2.2 pp, +10 yr warranty | | [AIKO AIKO-A470-MAH54Mb](https://comparepv.com/panel/aiko-aiko-a470-mah54mb) | 470 W | +50 W, lighter, +2.1 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +40 W, lighter, +2.1 pp | | [TCL Zhonghuan HSM-BD54-LA470](https://comparepv.com/panel/tcl-zhonghuan-hsm-bd54-la470) | 470 W | +50 W, lighter, +2.1 pp | | [Horay Solar HS425TC-MHO-D](https://comparepv.com/panel/horay-solar-hs425tc-mho-d) | 425 W | +0.3 pp | | [Horay Solar HS430TC-MHO-D](https://comparepv.com/panel/horay-solar-hs430tc-mho-d) | 430 W | +10 W, +0.5 pp | | [Horay Solar HS435TC-MHO-D](https://comparepv.com/panel/horay-solar-hs435tc-mho-d) | 435 W | +15 W, +0.8 pp | | [Horay Solar HS440TC-MHO](https://comparepv.com/panel/horay-solar-hs440tc-mho) | 440 W | +20 W, lighter, +1.0 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +75 W, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +85 W, cooler, +3.2 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +85 W, cooler, +3.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +70 W, lighter, +3.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +80 W, cooler, +3.0 pp | --- Source: https://comparepv.com/panel/horay-solar-hs420tc-mho-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.