--- title: "Horay Solar HS680TC-MHG-D 680W Solar Panel - Specs & Review | ComparePV" description: "Horay Solar HS680TC-MHG-D 680W solar panel. Specs: 21.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/horay-solar-hs680tc-mhg-d" updated: 2026-09-11 --- # Horay Solar HS680TC-MHG-D Strong in heat, heavy for its output 249 panels in the segment TOPCon 650-700 W ## Identity - **Manufacturer:** Horay Solar - **Model:** HS680TC-MHG-D - **Series:** HS 210-132 TC-D Galaxy N-type Bifacial Modules - **Rated power:** 680 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 650-700 W (249 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 680 W | 665 W | Typical | | | Module efficiency | 21.90% | 22.40% | Weak - bottom 21% | 6,783 | | Power density | 218.9 | 223.7 | Weak - bottom 19% | 6,804 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 19% | 1,309 | | Weight (kg) | 38.5 kg | 34.6 kg | Weak - bottom 14% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.90% | 22.40% | Weak - bottom 21% | 6,783 | | Power density | 218.9 | 223.7 | Weak - bottom 19% | 6,804 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 19% | 1,309 | | Weight per kWp | 56.6 | 53.2 | Weak - bottom 14% | 10,746 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 19% of the TOPCon 650-700 W segment, against a median of -0.290. ### Watch out for - **56.6 kg per kWp** - Bottom 14% of the TOPCon 650-700 W segment, against a median of 53.2. - **218.9 watts per square metre** - Bottom 19% of the TOPCon 650-700 W segment, against a median of 223.7. - **21.90% module efficiency** - Bottom 21% of the TOPCon 650-700 W segment, against a median of 22.40%. - **Best for:** Commercial, utility-scale and hot-climate. - **Not ideal for:** Weight-limited structures, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 680 W - **Efficiency:** 21.90 % - **Voltage at Pmax (Vmp):** 39.70 V - **Current at Pmax (Imp):** 17.13 A - **Open-circuit voltage (Voc):** 47.80 V - **Short-circuit current (Isc):** 18.15 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:** 132 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 38.5 kg - **Area:** 3.11 m2 - **Power density:** 218.9 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:** 594 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6783 of 14005 | | Power density | 6804 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 10746 of 14005 | | Warranty | 21 of 14005 | ## Pros - **BNEF Tier 1 status – project bankability** - Horay Solar has been listed on the BNEF Tier 1 PV module manufacturer list since Q1 2025 and remained there through Q1 2026. This bankability status meets the standard requirements of most financial institutions underwriting utility-scale PV projects, streamlining debt financing and insurer due diligence. - **N-type TOPCon + bifacial glass-glass synergy** - The combination of N-type TOPCon cells (passivated rear contact) with a bifacial glass-glass structure minimizes LID and PID while capturing an additional 5–15% energy yield from ground-reflected irradiance (depending on albedo). In carport systems, open-field installations with light gravel, and white-membrane rooftops, the bifacial gain translates to a measurably lower LCOE compared to monofacial modules. - **Up to 23.2% efficiency – peer-level performance** - The 720 Wp variant achieves 23.2% module efficiency, identical to peer comparables DMEGC DMxxxG12T-B66HSW and GCL GCL-NH12/66GDF (both at 720 Wp max / 23.2%). The series is fully competitive with leading N-type utility modules in the 210 mm format. - **30-year linear power warranty (≥87.4% at year 30)** - The official Horay Solar datasheet confirms ≥99% power retention at year 1 and ≥87.4% at year 30. Leapton LP210\*210-M-66-NH carries an identical 30-year power warranty horizon, confirming that the Galaxy series meets the benchmark standard for N-type bifacial utility modules. - **IEC 61215:2021 & IEC 61730:2023 certification** - Modules are certified to the latest IEC revisions, including IEC 61730 edition 2023, meeting the increasingly strict compliance requirements set by European investors and insurers for utility-scale PV projects commissioned after 2024. ## Cons - **15-year product warranty – below market trend** - The product warranty stands at 15 years, while DMEGC offers a 25-year product warranty on comparable N-type bifacial modules. For long-tenor project finance transactions (20–25 year loan tenors), the shorter warranty coverage gap may factor negatively into lender or insurer risk assessments. ## About this series The Horay Solar HS 210-132 TC-D Galaxy series is a range of N-type bifacial modules designed for maximum energy yield in modern installations, where stable performance over many years is crucial. They stand out due to **N-type technology with passivated (TOPCon) contacts**, which helps minimize losses and maintain high efficiency even in challenging operating conditions. The use of **glass-glass bifacial construction** allows for the utilization of reflected light from the ground, which significantly increases energy production compared to monofacial modules - especially on roofs with reflective membranes, on soil with gravel, and in carport systems. In practice, this series solves the problem of reduced energy yield on cloudy days thanks to **excellent performance at low irradiance** and supports the project's profitability through **a longer linear power warranty period**. It is a good choice for PV farms, large commercial and industrial installations, and investors who want to improve LCOE without compromising on durability and predictable production. ## Notable figures - At 21.9% efficiency, this panel is on par with typical \*\*TOPCon 650-700W\*\* modules - At 218.9 W/m², this panel generates 4.8 W/m² less per unit area than \*\*TOPCon 650-700W\*\* median (223.7 W/m²) - At -0.28%/°C, hot weather performance is typical for \*\*TOPCon 650-700W\*\* panels - At 38.5 kg (3.9 kg above \*\*TOPCon 650-700W\*\* median of 34.6 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty comes with the Horay Solar HS 210-132 TC-D Galaxy modules? The Galaxy series carries a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. At the end of year 30, the module is guaranteed to retain at least 83.1% of its nameplate power. This is one of the longer warranty standards in the Tier 1 N-type segment and directly supports a lower LCOE for the full project lifetime. ### What is TOPCon technology and why does the Galaxy series use it? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that adds an ultra-thin passivating oxide layer at the rear contact, reducing carrier recombination. This results in higher module efficiency and a lower annual degradation rate compared to standard PERC cells. In the Galaxy series it means more stable energy output over the 30-year warranty period and better performance at elevated cell temperatures. ### How much additional energy will I get from the bifacial design of the Galaxy HS 210-132 TC-D? Bifacial glass-glass modules capture reflected irradiance on the rear side of the cells. In typical ground-mount systems with light-colored gravel or white roofing membranes, the bifacial gain ranges from 5% to 15% compared to a monofacial module of equal nameplate power. The highest gains are achieved in carport systems and on flat roofs with high-albedo surfaces, where rear irradiance is maximized. ### Do the Horay Solar Galaxy 720 Wp panels perform well on overcast days and in diffuse light? Yes. N-type TOPCon cells have a lower turn-on threshold and generate higher current under low irradiance conditions compared to PERC cells. The Galaxy series is engineered for strong low-light performance, which is especially relevant in Central European climates where a significant portion of annual yield comes from cloudy days with diffuse irradiance rather than direct sunlight. ### What types of installations are the Horay Solar HS 210-132 TC-D Galaxy 720 Wp modules best suited for? With up to 720 Wp per module, the Galaxy series targets utility-scale PV farms, large commercial and industrial (C&I) rooftop systems, and carport structures. The high per-module power reduces the number of components per MW, lowering BoS and labor costs. The glass-glass construction provides the mechanical strength required for ground-mount racking exposed to heavy snow and wind loads. ### Is Horay Solar a reliable manufacturer and is the Galaxy series still available? Horay Solar is listed as a Tier 1 manufacturer with production facilities in China. The HS 210-132 TC-D Galaxy series is currently in active production and available through authorized European distributors. Before placing a bulk order, confirm stock levels and lead times with your distributor, as specific power-bin variants can have varying availability depending on production schedules. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HS210-132TC-D-Galaxy-720W-33Frame-without-C-c9214620a1e0.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -30 W, lighter, +3.3 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +3.3 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +3.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | -35 W, lighter, +3.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, lighter, +3.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, lighter, +3.0 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +2.9 pp | | [Horay Solar HS690TC-MHG-D](https://comparepv.com/panel/horay-solar-hs690tc-mhg-d) | 690 W | +10 W, +0.3 pp | | [Horay Solar HS700TC-MHG-D](https://comparepv.com/panel/horay-solar-hs700tc-mhg-d) | 700 W | +20 W, +0.6 pp | | [Horay Solar HS710TC-MHG-D](https://comparepv.com/panel/horay-solar-hs710tc-mhg-d) | 710 W | +30 W, +1.0 pp | | [Horay Solar HS720TC-MHG-D](https://comparepv.com/panel/horay-solar-hs720tc-mhg-d) | 720 W | +40 W, +1.3 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +125 W, cooler, +3.2 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +120 W, cooler, +3.0 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +115 W, cooler, +2.9 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +110 W, cooler, +2.7 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +80 W, cooler, +2.6 pp | --- Source: https://comparepv.com/panel/horay-solar-hs680tc-mhg-d 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.