Next-gen Back Contact (BC) cell technology. No front-side grid lines. Highest power density in the market.
Back Contact technology — no front-side grid lines = zero shading from bus bars.
More watts per m² than TOPCon or HJT. Ideal for land-constrained utility or rooftop projects.
No visible grid lines. Best-in-class look for premium residential + architectural BIPV.
Full product + performance warranty. Low annual degradation (0.35%/yr).
The JUSTSOLAR 680W BC module uses Back Contact (BC) cell technology — the newest generation of high-efficiency solar cells. Unlike TOPCon and HJT which still have front-side grid lines for current collection, BC cells have all electrical contacts on the rear side, eliminating front-side shading losses entirely. Result: 23.0%+ module efficiency, uniform aesthetic (no visible grid lines — just a clean black surface), and the highest power density per square meter in the market. BC is becoming the preferred choice for premium residential + architectural BIPV applications where both peak output and visual appearance matter. For C&I and utility, BC delivers more kWh per hectare — a direct BOS cost advantage for land-constrained sites. Single-glass and dual-glass variants available.
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Different module technologies suit different projects. Here are alternatives to JUSTSOLAR BC 680W from the JUSTSOLAR lineup.
N-type TOPCon bifacial mono module. Best-selling for commercial and utility projects.
Flagship HJT heterojunction module. Highest efficiency + best hot-climate performance in our lineup.
Premium black-frame N-type TOPCon for residential and high-end C&I rooftops. All-black aesthetic, high efficiency.
