Solid all-round for its segment
The IBC Solar Black LS-TA2 panel series is a proposal for the most demanding investors, combining the highest aesthetics with uncompromising technology. The use of advanced N-type cells in TOPCon architecture ensures that these modules are characterized by exceptional efficiency and excellent performance in low-light conditions, which is crucial in the Polish latitude. The innovative glass-glass construction combined with bifacial cell activity allows for the effective use of reflected light, which significantly increases the total energy yield from any roof or ground-mounted installation. This series effectively solves the problem of performance degradation over time, offering one of the most stable power curves on the market and full resistance to harmful phenomena such as PID or LID effects. Thanks to the elegant, deep black Full Black finish, these panels become an integral part of modern architecture, eliminating the need for compromises between high productivity and building aesthetics. This product is primarily dedicated to homeowners for whom durability measured in decades and maximum fire safety are priorities. What distinguishes them from market competition is rigorous quality control in independent laboratories and an exceptionally long 30-year warranty, making them one of the most secure investments in the Polish RES sector. Choosing this series is a guarantee of technical excellence and full energy independence in the most stylish form.
Ranking
Signals from the data
Residential and BIPV.
N-type TOPCon cells deliver a temperature coefficient of Pmax at -0.29%/°C, versus -0.35% to -0.38%/°C for standard PERC. On typical Polish rooftops where module temperature reaches 65°C in summer, this translates to roughly 2.5–3 percentage points less power loss at peak summer load compared to PERC technology.
The series reaches module efficiency of 22.3–22.8%, matching segment leaders Sunlike Solar SKT420~455M10-108D6 (22.8%) and LEDVANCE M435~455N54LB-SF-F7 (22.77%), while outperforming Waaree ARKA by over 1.37–1.87 percentage points. In practice, the same output can be achieved with a roughly 7–9% smaller roof area compared to Waaree ARKA — a critical advantage where roof space is constrained.
IBC Solar provides a 30-year performance warranty — 5 years beyond the 25-year standard offered by most competitors in this price tier. The linear degradation curve (avoiding the steep first-year drop characteristic of PERC cells) combined with full PID and LID immunity strengthens this warranty from a project bankability perspective.
Dual-glass lamination eliminates moisture-driven degradation (MVT < 0.001 g/m²/day vs. ≥1 g/m²/day for standard backsheet), improves mechanical resilience, and raises the fire safety class. IBC Solar AG (founded 1982, HQ Bad Staffelstein, Germany) validates every series through independent testing institutes, ensuring real-world parameter repeatability that matches datasheet values.
The glass-glass build results in a module weight of 24.5 kg, approximately 10–15% heavier than comparable N-type backsheet modules (typically 21–22 kg). For larger rooftop arrays (30+ modules), a structural load assessment and reinforced racking may be required, increasing overall BoS costs.
The opaque black rear glass of the Black LS-TA2 limits the bifacial factor (BF) to an estimated ~40–55%, whereas the sibling Transparent LS-TA2 with a clear rear glass achieves BF ~70–80%. On ground-mount or white-membrane installations with albedo >20%, the annualized yield gap versus the Transparent variant can reach 3–7%, partially negating the claimed bifacial benefit.
- At 22.3% efficiency, this panel is on par with typical database modules
- At 222.7 W/m² power density, this panel generates 4.6 W/m² more per unit area than database median (218.1 W/m²)
- Temperature coefficient of -0.29%/°C matches the database median
- Weight of 24.5 kg (2.0 kg below database median of 26.5 kg) allows easier transport and roof mounting
- 78% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
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.
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