Strong in heat, modest efficiency
The Horay Solar HS 182-120 TC-D Ocean series consists of bidirectional N-type modules designed for maximum energy yield in real-world conditions. The use of SMBB technology and half-cut cells improves power generation and reduces thermal losses, resulting in more predictable energy production, especially in partially shaded and variable sunlight conditions. Another advantage is high efficiency in low light - which is important in the Polish climate, where mornings, fog, and cloud cover are common.
The TC-D variant is also distinguished by resistance to harsh environments - the modules pass tests for salt fog and ammonia corrosion, making them suitable for coastal areas, roads with high salt content, and agricultural areas. This makes them a good choice for rooftop and ground-mounted installations, where long-term reliability, aesthetics, and the possibility of additional energy generation on the back side of the module are important.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
Tight roof space and roofs where every square metre has to count.
Top 12% of the TOPCon 450-500 W segment, against a median of -0.290.
Bottom 14% of the TOPCon 450-500 W segment, against a median of 22.52%.
Bottom 16% of the TOPCon 450-500 W segment, against a median of 225.2.
Horay Solar has appeared on the BNEF Tier 1 PV Module Manufacturer list since Q1 2025 and maintained its position through Q1 2026. This designation signals acceptance by global project finance institutions, reducing credit risk and facilitating project financing and leasing structures for commercial installations.
N-type TOPCon cells exhibit ~1% first-year degradation vs ~2% for PERC, and ~0.4%/year annual degradation vs 0.45-0.8% for PERC. Complete immunity to LID and LeTID translates to 8-15% more lifetime energy generation compared to PERC-based modules, according to independent technology analyses.
TOPCon bifacial modules deliver a bifaciality factor of 80-85% vs ~70% for PERC, increasing rear-side energy harvest. SMBB (multi-busbar) and half-cut cell architecture reduce resistive losses and improve partial-shading tolerance - a key advantage under Poland's variable irradiance and frequent overcast conditions.
The manufacturer guarantees a linear power output curve over 30 years, while peer comparable Solar-Fabrik Mono S4 Halfcut BC White covers only 25 years. Assuming ~0.4%/year TOPCon degradation, this yields >87% of rated power at year 30 and directly improves LCOE in project financial models.
The TC-D variant passes both salt mist (IEC 61701) and ammonia corrosion (IEC 62716) testing, confirming suitability for coastal sites, high-salinity road environments, and agricultural installations without requiring additional BoS anti-corrosion protection measures.
Maximum module efficiency is 22.6%, while the peer comparable Solar-Fabrik Mono S4 Halfcut BC White achieves 24.0% - a 1.4 pp gap. On space-constrained rooftops, back-contact (BC) technology enables approximately 6.2% higher kWp/m² yield, which can be a decisive factor for tight residential or commercial installations.
The workmanship and material defect warranty covers only 15 years, whereas select Tier 1 manufacturers in the 470-490 Wp power class offer 25-year product guarantees. For long-term commercial projects, this gap represents potentially higher servicing cost exposure beyond year 15 of operation.
- At 21.9% efficiency, this panel is 0.6pp below the TOPCon 450-500W median of 22.5%
- 219.4 W/m² power density is 5.8 W/m² below TOPCon 450-500W median (225.2 W/m²) - requires larger installation area
- Temperature coefficient of -0.28%/°C matches the TOPCon 450-500W median
- At 25.5 kg, this panel is 1.5 kg heavier than the TOPCon 450-500W median (24.0 kg) - more demanding for installation crews
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
Specifications
Datasheet charts
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 475 Wp appear here. The rest cover the whole series.
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
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About the HS 182-120 TC-D Ocean series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.