Efficiency leader, no clear weak spot
The BISOL Duplex Deflect BGO series stands out from the competition primarily due to its proprietary Deflect anti-reflective glass technology, which reduces luminance to a safe level - this is particularly important in areas where reflected sunlight could be a problem for neighbors, road users, or people using nearby facilities. Modules built with half-cut monocrystalline cells ensure stable energy generation even in partially shaded conditions, minimizing losses due to uneven sunlight exposure. The entire product is designed and manufactured 100% in the European Union, guaranteeing consistent quality, compliance with European environmental standards, and the absence of PFAS substances. The series offers a 30-year linear warranty with 90% of the original output maintained - a level significantly exceeding industry standards. High resistance to snow loads and hail, as well as certified fire resistance class 1, make the modules suitable for both residential rooftop installations and demanding commercial projects. The absence of degradation caused by PID and LETID effects results in predictable and stable energy production throughout the lifespan.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
Top 1% of the TOPCon 550-600 W segment, against a median of 22.44%. Ranked 716th in the whole database.
Top 1% of the TOPCon 550-600 W segment, against a median of 224.4. Ranked 848th in the whole database.
Top 3% of the TOPCon 550-600 W segment, against a median of 53.8. Ranked 542nd in the whole database.
Bisol's proprietary Deflect anti-reflective glass reduces luminance to levels safe for the surrounding environment — a feature absent in peer comparables (Emmvee Titanium, ZNShine ZXM7). This is especially relevant for installations near roads, airports, and urban areas, where glare can pose safety hazards or trigger neighbor complaints.
Peak efficiency of 23.5% exceeds all three peer comparables: Emmvee Titanium Duo and Titanium Clear (22.45%) and ZNShine ZXM7-UHLD144 (22.44%), even though those series are bifacial and N-type. The higher energy yield per m² of roof area translates into superior performance in space-constrained installations.
Bisol guarantees retention of at least 90% of rated output power in year 30 of operation. The industry standard for the 560–580 Wp segment is typically 80–84.8% after 25 years (e.g., JA Solar, LONGi). The combination of a 25-year product warranty and a 30-year power warranty at 90% significantly exceeds the market median.
All modules are designed and manufactured in Slovenia (since 2004), ensuring compliance with European environmental standards, consistent quality control, and the absence of PFAS substances. This is a key advantage for public-sector investors, ESG-driven procurement, and tenders requiring an EU carbon footprint. Peer comparables (Emmvee – India, ZNShine – China) do not offer European manufacturing.
Verified snow load rating of 5,400 Pa, hail resistance, Fire Class 1 certification, and certified ammonia resistance. Freedom from PID and LETID degradation ensures stable energy production throughout the module's operational lifetime — critical for industrial and agricultural installations.
Bisol does not appear on the BloombergNEF Tier 1 list (as of Q1 2026), due to the bankability criterion requiring a minimum of six projects >10 MW financed by independent commercial banks within a 24-month period. Although Bisol contests BNEF's methodology and references TÜV/KIWA PVEL certifications, the absence of Tier 1 status may be an obstacle when securing bank financing for larger commercial projects or PPAs.
The series is monofacial (is_bifacial: false), whereas direct peer comparables — Emmvee Titanium Duo (glass-glass) and Emmvee Titanium Clear (glass-transparent backsheet) — offer bifacial capability at the same 580 Wp power class and a comparable efficiency of 22.45%. In ground-mount and flat-roof installations, bifacial modules deliver a real energy yield bonus of 5–15%, which may tip the balance in an LCOE analysis.
- 23.5% module efficiency - 1.1pp better than the TOPCon 550-600W median of 22.4%
- 234.9 W/m² power density - 10.5 W/m² more than TOPCon 550-600W median (224.4 W/m²), more power per roof area
- At -0.29%/°C, hot weather performance is typical for TOPCon 550-600W panels
- At 26.0 kg, this panel is 5.2 kg lighter than TOPCon 550-600W median (31.2 kg) - easier handling during installation
- #716 for efficiency, #2165 for temperature performance out of 14005 panels
Specifications
Datasheet charts
Measured curves published by Bisol in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 580 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Found 38 panels of the same or similar size to this one, within ±10 mm. See them here Found 54 panels of the same or similar size to this one, within ±25 mm. See them here Found 118 panels of the same or similar size to this one, within ±50 mm. See them here Found 987 panels of the same or similar size to this one, within ±100 mm. See them here