Strong in heat, heavy for its output
The Horay Solar HS 210-110 TC-D Galaxy photovoltaic module series utilizes the most advanced N-type TOPCon cell technology currently on the market, which ensures higher conversion efficiency and excellent performance in low-light conditions. By using innovative cells based on 210 mm silicon wafers, these modules offer powerful unit power, allowing for a significant reduction in mounting structure and cabling costs. A key advantage of the Galaxy series is the bifacial structure, which, combined with a durable double glass construction, enables additional energy generation from the rear of the panel, increasing total yield by up to several percent. This solution effectively eliminates the risk of degradation caused by LID and LeTID effects, guaranteeing investors power production stability for over 30 years. These panels are primarily dedicated to professional agrivoltaic farms and large commercial installations, where the priority is maximizing ROI and achieving the lowest levelized cost of energy (LCOE). Exceptional resistance to mechanical loads and aggressive environmental factors makes this series stand out from the competition in terms of durability in the demanding Polish climate. It is a technological foundation for modern energy systems focused on trouble-free operation.
Ranking
Signals from the data
Hot roofs and southern climates.
Weight-limited structures, tight roof space and roofs where every square metre has to count.
Top 5% of the TOPCon 550-600 W segment, against a median of -0.290. Ranked 1,347th in the whole database.
Bottom 11% of the TOPCon 550-600 W segment, against a median of 53.8.
Bottom 15% of the TOPCon 550-600 W segment, against a median of 22.44%.
Bottom 15% of the TOPCon 550-600 W segment, against a median of 224.4.
N-type TOPCon cells contain no boron-oxygen pairs responsible for LID, and advanced hydrogen passivation suppresses LeTID to near-zero levels. In practice, this yields measurably higher annual energy output compared to P-type PERC modules throughout the full 30-year operating lifetime.
Horay Solar provides a 30-year linear performance warranty - five years longer than the standard 25-year terms applied by most Tier-1 peers in the commercial segment (e.g., Emmvee Titanium, ZNShine ZXM7). The extended warranty horizon improves project bankability and lowers LCOE in financial modeling.
210 mm silicon wafers enable unit power up to 580 Wp per module, translating to approximately 8-10% fewer mounting points, shorter DC wiring runs, and reduced racking costs per MWp compared to typical 182 mm modules rated at 460-490 Wp.
Horay Solar has been listed on the BloombergNEF Tier-1 Module Manufacturers list since at least Q1 2025, with confirmed status maintained in Q1 2026. This classification is a prerequisite for bank-financed solar farms and PPA contracts with financial institutions across Europe.
The bifacial double-glass construction generates an additional 8-22% energy yield from reflected albedo - in line with independent CGC Sanya field tests for TOPCon bifacial modules. The benefit is particularly significant in the target agrivoltaic application, where light-colored vegetation raises the ground albedo coefficient.
The Galaxy series peaks at 22.2% efficiency (580 Wp variant), while both peer comparables reach 22.44-22.45% at the same power class: Emmvee Titanium Clear/Duo at 22.45% and ZNShine ZXM7-UHLD144 at 22.44%. The ~0.24-0.25 pp gap translates into a larger required roof or field area per megawatt of installed capacity.
The manufacturer offers a 15-year product warranty (material defects, mechanical damage) versus the 25-year standard applied by leading Tier-1 peers in the premium segment - including Trina Solar Vertex N, JA Solar DeepBlue 4.0 Pro, and LONGi Hi-MO X6. The shorter term may limit module acceptance by banks financing projects with an operational horizon exceeding 20 years.
- Module efficiency of 21.8% is 0.6pp below average for TOPCon 550-600W panels (median: 22.4%)
- Power density of 218.2 W/m² is 6.2 W/m² below TOPCon 550-600W median (224.4 W/m²) - needs more roof space
- At -0.28%/°C, hot weather performance is typical for TOPCon 550-600W panels
- At 32.5 kg (1.3 kg above TOPCon 550-600W median of 31.2 kg), requires checking roof load capacity
- 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 570 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 210-110 TC-D Galaxy series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.