Strong in heat, modest efficiency
The Horay Solar HS 210-100 TC-D Galaxy series redefines performance standards through the use of advanced N-type cells in TOPCon technology. These modules are based on large 210 mm silicon wafers, which, combined with a bifacial design, allow for maximizing energy yields even in challenging lighting conditions and at low solar incidence angles. The use of TOPCon cell technology significantly limits light-induced degradation and ensures a much lower temperature coefficient, resulting in stable and efficient operation of the installation on hot summer days. This solution is primarily dedicated to investors seeking the highest power density and extreme durability guaranteed by the double glass structure. Double tempered glass effectively protects the panel against micro-cracks and aggressive chemical environments, making it an ideal choice for large photovoltaic farms and industrial roofs with a very long life cycle. What sets them apart from the competition is the precise matching of electrical parameters, which effectively optimizes cabling and mounting structure costs. By choosing the Galaxy series, you gain higher efficiency per square meter and the certainty that the system will maintain high efficiency for decades, effectively minimizing the levelized cost of energy (LCOE) in demanding Polish climatic conditions.
Ranking
Signals from the data
Hot roofs and southern climates.
Tight roof space and roofs where every square metre has to count.
Top 10% of the TOPCon 500-550 W segment, against a median of -0.290. Ranked 1,309th in the whole database.
Bottom 11% of the TOPCon 500-550 W segment, against a median of 22.73%.
Bottom 11% of the TOPCon 500-550 W segment, against a median of 227.4.
Horay Solar has maintained BNEF Tier 1 bankable manufacturer status through Q1 2026, enabling project finance access and reducing counterparty warranty risk for institutional investors and utility-scale PV farms.
N-type TOPCon cells exhibit a temperature coefficient of approximately –0.28 %/°C compared to –0.34÷–0.37 %/°C typical for PERC. At summer module temperatures of +60 °C, this translates to several percentage points of additional energy yield versus legacy P-type technology, alongside reduced LID degradation.
Dual tempered glass eliminates PID micro-cracking and chemical corrosion, extending service life to 30+ years on industrial rooftops and ground-mount farms. Bifaciality adds 5–15% extra energy from reflected irradiance (albedo ≥ 0.2), directly lowering the system's LCOE.
The manufacturer guarantees performance retention for 30 years, exceeding the 25-year standard common in the segment (Trina Solar Vertex N, Jinko Tiger Neo), and directly reducing energy production risk under long-term PPA agreements.
M12 (210 mm) wafers deliver 510–530 Wp per module at ~2.56 m², reducing the total module count per MWp and cutting BoS costs (racking, DC cabling, labor) by an estimated 3–6% compared to 182 mm modules of similar technology.
The series tops out at 22.2% efficiency, while both key peer comparables in the dataset — Huasun Everest G12R and JA Solar JAT60S41 LR — achieve 23.9%. For the same roof area, this translates to roughly 7–8% less peak power output, a meaningful constraint for constrained industrial rooftops or area-limited installations.
The 15-year product warranty (covering mechanical and electrical module integrity) is a decade shorter than the 25-year benchmark offered by JA Solar, Jinko Solar, and Trina Solar in the premium segment. This creates a service coverage gap in years 16–30 of a typical farm's operational life, shifting replacement risk to the investor.
A 210 mm double glass module typically weighs approximately 34–36 kg versus 26–28 kg for single-glass alternatives in the same power class. On industrial rooftops with limited load capacity (e.g., older steel-framed buildings rated below 30 kg/m²), this may require a structural engineering assessment or roof reinforcement, increasing CAPEX.
- Efficiency of 21.8% is 0.9pp below the TOPCon 500-550W median (22.7%)
- Power density of 218.2 W/m² is 9.2 W/m² below TOPCon 500-550W median (227.4 W/m²) - needs more roof space
- Temperature coefficient of -0.28%/°C matches the TOPCon 500-550W median
- At 28.0 kg, weight matches the TOPCon 500-550W median
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Alternatives
Found 8 panels of the same or similar size to this one, within ±10 mm. See them here Found 49 panels of the same or similar size to this one, within ±25 mm. See them here Found 136 panels of the same or similar size to this one, within ±50 mm. See them here Found 994 panels of the same or similar size to this one, within ±100 mm. See them here