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Horay Solar Brand review

HS455TC-MHA-D

455 Wp TOPCon Bifacial 80%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 7,921 of 14,005
Compare panels Datasheet PDF
Power (Wp)
455
Typical for its class
Efficiency (%)
22.80
Typical · median 22.52%
Density (Wp/m²)
227.7
Typical · median 225.2
Temp (%/°C)
-0.280
Strong · top 11%
Weight (kg)
24.5
Typical · median 24.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Horay Solar HS 186R-108 TC-D Alpine series utilizes advanced N-type TopCon technology, which redefines efficiency standards even in difficult lighting conditions. The Double Glass construction provides exceptional mechanical resistance to extreme snow and wind loads, making these modules an ideal choice for investments in demanding climates. Thanks to the use of bifacial cells, the panels effectively utilize light reflected from the ground, significantly increasing the total energy yield from a limited mounting surface. A key feature of the series is minimal linear degradation, which guarantees stable power production for decades, effectively solving the problem of rapid efficiency loss known from older-generation modules. The product is aimed at conscious prosumers and commercial investors who seek uncompromising durability combined with modern aesthetics. The Alpine system distinguishes itself from the competition with a significantly better response to diffused light, which in the Polish climate zone directly translates into a faster return on investment. High cell efficiency combined with certified durability makes these panels the foundation of a safe and predictable micro-installation, while maintaining an excellent appearance on the roof surface.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.80% 22.52% Typical 2,714
Power density 227.7 225.2 Typical 2,888
Temperature coefficient -0.280 -0.290 Strong · top 11% 1,309
Weight per kWp 53.8 52.2 Typical 7,897
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 1 caution
Best for

Hot roofs and southern climates.

Strengths
-0.280 %/°C temperature coefficient

Top 11% of the TOPCon 450-500 W segment, against a median of -0.290.

What owners get
N-type TOPCon – minimal LID degradation

N-type TOPCon cells exhibit first-year LID degradation below 1% and ≤0.4% annually thereafter, retaining ≥87.4% of nameplate power after 30 years. Older P-type PERC cells degrade at 0.55–0.7% per year, resulting in a cumulative yield difference of several hundred kWh over a 25-year project lifetime for a 435–455 Wp module.

Bifacial Double Glass design (TC-D)

The TC-D designation confirms bifacial cells in a glass–glass encapsulation, eliminating backsheet degradation and boosting mechanical resistance to snow and wind loads. Under typical Polish rooftop conditions (ground albedo 15–25%), bifacial gain is estimated at 5–12% additional energy yield compared to a monofacial module of equivalent front-side wattage.

Up to 22.8% efficiency – top of the 108-cell segment

The highest-power variant (455 Wp) achieves 22.8% module efficiency, matching direct peers Sunlike Solar SKT420~455M10-108D6 (22.8%) and IBC Solar LS-TA2 455 W (22.8%), while outperforming the Waaree ARKA Series (20.93%) by nearly 1.9 percentage points. Higher efficiency directly reduces the roof area needed for a given system capacity.

BNEF Tier 1 status – bankable Q1 2025 / Q1 2026

Horay Solar has appeared on the BloombergNEF Tier 1 PV Module Manufacturer list since Q1 2025 and maintained that status through Q1 2026. This bankability confirmation enables acceptance by project finance institutions and is a prerequisite for many commercial PV project loans and infrastructure funds.

30-year linear power warranty

The manufacturer provides a 30-year linear power warranty alongside a 15-year product warranty. The 30-year power guarantee aligns with the benchmark set by leading Tier-1 manufacturers (Trina Vertex S+, JA Solar Deep Blue), supporting long-term LCOE modeling and financial predictability throughout the system's operational life.

Trade-offs
15-year product warranty – below market standard

Most leading Tier-1 manufacturers in the TOPCon segment (Jinko Solar Tiger Neo, LONGi Hi-MO 6, Trina Vertex S+) offer a 25-year product warranty. The 10-year shortfall may be a deciding factor in commercial installations requiring extended warranty coverage or in bank-financed projects with minimum warranty duration requirements.

Notes from the database
  • Efficiency of 22.8% matches the TOPCon 450-500W median
  • Power density of 227.7 W/m² matches the TOPCon 450-500W median
  • Temperature coefficient of -0.28%/°C matches the TOPCon 450-500W median
  • 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
  • Ranked #2714 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 455 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.80 % Typical Segment median 22.52%
Vmpp · Impp 33.53 V · 13.57 A Operating point at max power
Voc · Isc 40.14 V · 14.03 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 24.5 kg Typical Typical · median 24.0 kg
Cells 108 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.280 %/°C Strong top 11% of its segment
Coefficient Voc · Isc -0.230 · 0.040 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 398 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Horay Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 455 Wp appear here. The rest cover the whole series.

Linear Performance Warranty (N-type vs Standard Module) Linear Performance Warranty (N-type vs Standard Module) Whole series Current-Voltage (I-V) Curves — HS455TC-MHA-D Current-Voltage (I-V) Curves — HS455TC-MHA-D 455 W Power-Voltage (P-V) Curves — HS455TC-MHA-D Power-Voltage (P-V) Curves — HS455TC-MHA-D 455 W

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.280 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Alternatives

All Horay Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Horay Solar HS455TC-MHA-D 455 W 22.80% -0.280 24.5 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +40 W, lighter, +2.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +50 W, cooler, +1.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +35 W, lighter, +1.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +45 W, cooler, +1.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +45 W, lighter, +1.7 pp
GK-3-54HGb-500M 500 W 24.50% -0.260 21.4 kg +45 W, lighter, +1.7 pp
HS435TC-MHC-D 435 W 21.80% -0.280 24.5 kg -20 W, -1.0 pp
HS440TC-MHC-D 440 W 22.00% -0.280 24.5 kg -15 W, -0.8 pp
HS445TC-MHC-D 445 W 22.30% -0.280 24.5 kg -10 W, -0.5 pp
HS450TC-MHC-D 450 W 22.50% -0.280 24.5 kg -0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +55 W, cooler, +2.2 pp

Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is the product and power warranty for the Horay Solar HS 186R-108 TC-D Alpine?
The Alpine series comes with a 15-year product warranty covering material and workmanship defects, and a 30-year linear power warranty — both at the top end of the market. N-type TOPCon cells degrade at typically less than 0.4% per year, so the module retains the vast majority of its 455 Wp rated output after three decades. The extended coverage reduces investment risk and simplifies long-term energy yield modeling.
Can the Horay Solar Alpine panels handle heavy snow loads common in Central European winters?
Yes. The Double Glass construction of the Alpine series is engineered for extreme weather conditions. Horay Solar glass-glass modules are rated for snow loads up to 5,400 Pa, equivalent to over 50 cm of wet snow. The dual tempered glass laminate and reinforced frame protect cells from mechanical deformation and moisture ingress throughout the module's full service life.
What makes the TOPCon cell technology in the Alpine series worth the premium over PERC?
N-type TOPCon cells achieve higher conversion efficiency than PERC because they capture a broader photon spectrum and reduce recombination losses at the cell surface. Annual degradation is typically below 0.4%, versus 0.5–0.7% for PERC modules. Over a 25–30-year system lifetime, this translates to measurably more kilowatt-hours per installed kilowatt-peak, making the higher upfront cost financially justified in most LCOE calculations.
Is the HS 186R-108 TC-D Alpine a bifacial panel, and what real-world gain can I expect?
Yes, the Alpine series is a bifacial module. The rear glass allows light reflected from roofing membranes, gravel, or light-colored surfaces to reach the cells and generate additional power. In typical rooftop installations, bifacial gain ranges from 5% to 12% above the nominal 455 Wp, depending on surface albedo and array tilt angle.
How does the Alpine series perform under overcast skies and diffuse irradiance typical in Poland?
The Alpine series shows a stronger low-light response than standard PERC modules, which matters greatly in Poland where more than half of annual irradiation arrives as diffuse light. N-type TOPCon cells maintain a higher short-circuit current at low irradiance levels, keeping the system productive even during October or March, which directly shortens the effective payback period.
Is Horay Solar a reputable manufacturer — how is it rated by independent industry bodies?
Horay Solar holds Bloomberg NEF Tier 1 status, confirmed in Q1 2025. This designation means the company meets strict financial and manufacturing criteria and is accepted by project finance banks for utility-scale PV investments. The combination of Tier 1 certification and a 30-year power warranty makes the Alpine modules a low-risk choice for both residential prosumers and commercial investors.
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