Strong in heat, needs the roof space
The Horay Solar HS 186R-120 TC-D Alpine series is designed for stable energy production under real-world operating conditions, not just in a laboratory setting. The use of N-type cells naturally reduces LID degradation, which helps maintain high performance over the long term. The modules utilize half-cell SMBB technology, which improves current collection and reduces heat loss - a significant advantage in high-irradiance and high-current applications. Another key feature is good performance in low light, which results in more predictable output in the morning, evening, and cloudy days, typical of the Polish climate. The reinforced design and resistance to harsh environments (including salt fog and ammonia tests) make it suitable for industrial and agricultural sites. It is a good choice for residential, commercial, and PV farm installations, where durability, parameter repeatability, and safe operation are important.
Ranking
Signals from the data
Residential, commercial, shaded-installations and cold-climate.
Roofs where every square metre has to count.
Top 12% of the TOPCon 450-500 W segment, against a median of -0.290.
Bottom 23% of the TOPCon 450-500 W segment, against a median of 225.2.
Peak efficiency of 23.1% slightly edges out JA Solar JAM60S40 LR (23.0%) and Sunlike SKT510 (22.93%), and significantly outperforms Trina Solar Vertex (21.2%). Even the bottom of the series range - 22.2% - stays above the peer-group median.
N-type cells eliminate LID/LeTID degradation risk common in P-type PERC technology. TOPCon temperature coefficient for Pmax is approximately -0.30%/°C vs. ~-0.35%/°C for PERC (Gebhardt et al. 2025, Progress in Photovoltaics), reducing power losses on hot days. Bifaciality of ~80-90% enables additional yield from ground-reflected irradiance.
The manufacturer commits to warranted output for 30 years - among the longest standards in the 490-510 Wp class. Earlier-generation series from Trina Solar and JA Solar commonly carried 25-year power warranties. Workmanship (product) warranty stands at 15 years.
Super Multi Busbar architecture reduces contact resistance and thermal stress at busbars. Halving the cells limits shading mismatch losses and mechanical crack propagation - each half-cell string operates as an independent circuit, boosting reliability in industrial and agrivoltaic installations.
Horay Solar joined the BNEF Tier 1 bankable list in Q1 2025, confirming eligibility for non-recourse project financing. This status is required by most banks and infrastructure funds financing utility-scale PV projects above 1 MW across Europe.
Horay Solar's annual production capacity of approximately 2,500 MW contrasts sharply with JA Solar (>60 GW/yr) and Trina Solar (>50 GW/yr). For utility-scale orders above 10 MW, buyers may face extended lead times or limited availability of specific wattage bins within the 490-510 Wp range.
Horay Solar only entered the BNEF Tier 1 ranking in Q1 2025, while JA Solar and Trina Solar have held Tier 1 status for over a decade. Some European project finance teams require a multi-year Tier 1 history when assessing module bankability for projects above 5 MW, potentially extending due diligence timelines.
- At 22.2% efficiency, this panel is on par with typical TOPCon 450-500W modules
- Power density of 221.0 W/m² is 4.2 W/m² below TOPCon 450-500W median (225.2 W/m²) - needs more roof space
- At -0.28%/°C, hot weather performance is typical for TOPCon 450-500W panels
- At 26.0 kg, this panel is 2.0 kg heavier than the TOPCon 450-500W median (24.0 kg) - more demanding for installation crews
- 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
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 490 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 186R-120 TC-D Alpine series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.