--- title: "Horay Solar HS535TC-MHD-D Solar Panel: Specs & Datasheet | ComparePV" description: "Horay Solar HS535TC-MHD-D solar panel. Specs: 22.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/horay-solar-hs535tc-mhd-d" image: "https://comparepv.com/og/panel/horay-solar-hs535tc-mhd-d.png" updated: 2026-09-11 --- # Horay Solar HS535TC-MHD-D Strong in heat, heavy for its output 142 panels in the segment N-type 500-550 W ## Identity - **Manufacturer:** Horay Solar - **Model:** HS535TC-MHD-D - **Series:** HS 199R-120 TC-D Delta - **Rated power:** 535 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 500-550 W (142 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 535 W | 520 W | Strong - top 18% | | | Module efficiency | 22.90% | 22.55% | Typical | 2,412 | | Power density | 225.3 | 225.3 | Typical | 4,265 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 23% | 1,347 | | Weight (kg) | 29.0 kg | 26.2 kg | Weak - bottom 21% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.90% | 22.55% | Typical | 2,412 | | Power density | 225.3 | 225.3 | Typical | 4,265 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 23% | 1,347 | | Weight per kWp | 54.2 | 50.0 | Weak - bottom 21% | 8,510 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 23% of the N-type 500-550 W segment, against a median of -0.290. ### Watch out for - **54.2 kg per kWp** - Bottom 21% of the N-type 500-550 W segment, against a median of 50.0. - **Best for:** Hot roofs and southern climates. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 535 W - **Efficiency:** 22.90 % - **Voltage at Pmax (Vmp):** 37.05 V - **Current at Pmax (Imp):** 14.44 A - **Open-circuit voltage (Voc):** 43.68 V - **Short-circuit current (Isc):** 15.38 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:** 120 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2094 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 29.0 kg - **Area:** 2.37 m2 - **Power density:** 225.3 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:** 468 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2412 of 14129 | | Power density | 4265 of 14129 | | Temperature coefficient | 1347 of 14129 | | Weight | 8510 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Efficiency above segment median** - The 22.2-23.1% efficiency range clearly outperforms two of three peer comparables: DMEGC GHxxxM10T-B66HST and Heliene 144HC M10 SL Bifacial, both at 20.9%. A gap of ~1.3-2.2 percentage points translates into meaningfully higher energy yield per unit of roof area, reducing LCOE. - **N-type TOPCon cell technology** - N-type cells exhibit LID degradation below 1% in year one, versus up to 2-3% for PERC. A lower temperature coefficient (typically ~-0.30%/°C for TOPCon vs. -0.35%/°C for PERC) delivers higher real-world yield on hot, high-irradiance rooftops - a decisive advantage for south-facing pitches with minimal shading. - **Bifacial double-glass - rear-side gain** - The bifacial double-glass construction captures albedo from the rear surface. Over high-reflectivity substrates (gravel, white EPDM, snow), a bifaciality factor in the 70-85% range typical for this module class adds 5-15% to annual energy yield compared to monofacial equivalents. The dual-glass encapsulation also eliminates backsheet degradation risk. - **BNEF Tier-1 bankable status** - Horay Solar has appeared on the BNEF Tier 1 solar module manufacturer list since Q1 2025, confirming financial credibility and module acceptance as collateral by project-finance lenders for commercial and utility-scale projects. The 2,500 MW/year production capacity reduces supply-chain disruption risk. - **30-year linear power warranty** - The 30-year linear power warranty exceeds the 25-year standard offered by many peers including DMEGC and Heliene. The extended warranty horizon lowers residual risk in long-tenor project finance structures (PPAs, lease agreements). ## Cons - **Efficiency below segment leader** - Gokin GK-5-60HG achieves 24.4% efficiency at the same 540 Wp power class, representing a ~1.3-2.2 percentage-point advantage over the Delta series (22.2-23.1%). The gap likely reflects Gokin's use of back-contact (BC) cell technology; however, in space-constrained installations (small industrial rooftops), this translates to measurably fewer watts per m². - **Product warranty only 15 years** - The materials and workmanship warranty is 15 years, whereas leading Tier-1 manufacturers - Trina Solar, JA Solar, LONGi - standardly offer 25 years. For institutional investors and projects with 20-25-year financing horizons, the shorter product warranty increases O&M cost risk beyond year 15. ## About this series The Horay Solar HS 199R-120 TC-D Delta series of photovoltaic panels is an advanced solution based on innovative **N-type TOPCon** cells, which redefine efficiency standards in challenging lighting conditions. Thanks to the use of **bifacial double glass** technology, these modules effectively utilize light reflected from the ground, significantly increasing total energy yield compared to single-sided counterparts. The Delta design solves the problem of limited installation space, offering high power density while maintaining compact dimensions. The use of **rectangular R-type cells** allows for better filling of the module surface, which minimizes energy losses and improves the aesthetics of the installation. These panels are characterized by exceptional resistance to PID and LID degradation, guaranteeing stable operation and a fast return on investment for decades. This product is dedicated to demanding prosumers and commercial investors seeking uncompromising durability and a **low temperature coefficient**. It is precisely the excellent performance at high temperatures that distinguishes this series from the competition, making it an ideal choice for roofs with high solar exposure. By choosing the Delta series, the user receives a product combining modern design with technology that realistically lowers the cost of producing a kilowatt-hour of energy. ## Notable figures - Efficiency of 22.9% matches the \*\*N-type 500-550W\*\* median - Power density of 225.3 W/m² matches the \*\*N-type 500-550W\*\* median - At -0.28%/°C, hot weather performance is typical for \*\*N-type 500-550W\*\* panels - At 29.0 kg, this panel is 2.8 kg heavier than the \*\*N-type 500-550W\*\* median (26.2 kg) - more demanding for installation crews - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What does N-type TOPCon technology mean in the Horay Solar HS 199R-120 TC-D Delta, and why is it better than PERC? N-type TOPCon cells deliver higher conversion efficiency and lower annual degradation than conventional PERC cells. In practice, this means more energy from the same roof area and better performance under diffuse light or partial overcast conditions. The Delta series reaches a peak power of 540 Wp thanks to this technology, resulting in a lower LCOE over the full service life. ### What is the warranty on the Horay Solar HS 199R-120 TC-D Delta panels? The manufacturer provides a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. The latter guarantees that after 30 years the modules will still produce a specified percentage of their rated power. These terms are standard for Tier 1 manufacturers and are comparable to those offered by leading global brands. ### Are the bifacial Horay Solar Delta panels suitable for a typical dark sloped tile roof? Bifacial technology yields the greatest benefit when installed above a highly reflective surface such as a white membrane or light-colored gravel. On a typical dark sloped roof the bifacial gain is minimal, but the panel still operates very efficiently thanks to its N-type TOPCon cells and strong resistance to PID and LID. The dual-glass construction also adds superior moisture resistance and mechanical durability, which is an advantage regardless of roof type. ### How does the HS 199R-120 TC-D Delta series perform in high summer temperatures? N-type TOPCon cells have a lower temperature coefficient than older P-type cells, meaning a smaller power drop as the module heats up on a sunny day. The Delta series is specifically recommended for highly irradiated roofs for this reason. In real-world conditions the difference can amount to several percentage points of annual energy yield compared with panels that carry a higher temperature coefficient. ### Is Horay Solar a reliable manufacturer, and is the Delta series available in Poland? Horay Solar is listed as a Bloomberg NEF Tier 1 manufacturer, confirming financial stability and production scale. The company is headquartered in China and regularly exports modules across Europe. The HS 199R-120 TC-D Delta series is available through authorized renewable energy distributors in Poland, though availability of specific power variants should be confirmed with the supplier. ### How do the rectangular R-type cells and Delta construction in the Horay Solar series differ from standard solar panels? Rectangular R-type cells fill the module surface more efficiently than conventional square cells, eliminating dead zones and maximizing the active power-generating area. The Delta construction is designed for installations with limited roof space, delivering higher power density per square meter. Together they allow more watts to be fitted on irregular or smaller roof shapes without compromising output. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HS199R-120TC-D-Delta-540W-3fbe0e57142d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | -40 W, lighter, +1.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +25 W, lighter, +1.9 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +1.8 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | -30 W, lighter, +1.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +1.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | -45 W, lighter, +1.6 pp | | [Horay Solar HS520TC-MHO](https://comparepv.com/panel/horay-solar-hs520tc-mho) | 520 W | -15 W, lighter, -1.0 pp | | [Horay Solar HS525TC-MHO](https://comparepv.com/panel/horay-solar-hs525tc-mho) | 525 W | -10 W, lighter, -0.8 pp | | [Horay Solar HS530TC-MHO](https://comparepv.com/panel/horay-solar-hs530tc-mho) | 530 W | Lighter, -0.6 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +55 W, lighter, +0.9 pp | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +50 W, lighter, +0.7 pp | | [Bisol BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 W | +45 W, lighter, +0.6 pp | | [Gamko New Energy GKA120N-PRO-580W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-580w) | 580 W | +45 W, lighter, +0.5 pp | --- Source: https://comparepv.com/panel/horay-solar-hs535tc-mhd-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.