Canadian Solar Unveils Breakthrough Low-Carbon Modules, Setting New Benchmark in Sustainable Manufacturing

KITCHENER, ON, Sept. 8, 2025 /PRNewswire/ -- Canadian Solar Inc. (the "Company" or "Canadian Solar") (NASDAQ: CSIQ) today announced the launch of its next-generation Low Carbon (LC) modules, which combine the latest wafer innovations with advanced heterojunction (HJT) cell technology. The Low Carbon modules achieve an industry-leading carbon footprint of just 285 kg CO₂eq/kW, one of the lowest among all silicon-based solar modules worldwide, setting a new benchmark in sustainable solar manufacturing.

Designed for utility-scale and commercial & industrial (C&I) applications, the new LC modules deliver up to 660 Wp output with module efficiency of up to 24.4%, with deliveries commencing in August 2025.

Canadian Solar developed the Low Carbon modules through proprietary innovations in ingot, wafer and HJT cell technologies. Each technology innovation has contributed to the reduction of energy consumption and carbon emissions:

1. Higher ingot utilization rate – Increasing ingot utilization rate by around 20%, thus lowering emissions by approximately 9.7% (or 30 kg CO₂ per kWp).
2. Thinner wafers – Reducing wafer thickness to 110 μm (compared to 130–135 μm in TOPCon/BC) for each solar cell, thus reducing silicon consumption and carbon emissions by 4.5%–5.5% (or 14–19 kg CO₂ per kWp).
3. Optimized HJT cell manufacturing – Streamlining production to just four steps (compared to 10–13 steps for TOPCon/BC solar cells) and lowering operating temperature to

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