CarbonNest Achieves Over 200 Hours of Continuous Stable Direct Air CO₂ Capture in Hokkaido's Harsh Winter

CarbonNest Co., Ltd. (Headquarters: Bunkyo-ku, Tokyo; Representative Director: Takashi Kawasaki) announced that it achieved over 200 hours of continuous stable operation of its DAC (Direct Air Capture) device during a demonstration conducted in Ishikari City, Hokkaido, from November to December 2025, in sub-zero winter conditions. The company has accumulated empirical data on its operational control capabilities to keep the DAC running without interruption in extreme environments, confirming the strength of its control technology. CarbonNest is an energy startup that develops and operates DAC devices that capture CO₂ directly from the atmosphere. The company's strength lies not only in hardware manufacturing but also in operational control technology that keeps the DAC running under harsh environmental conditions. Designing integrated control with renewable energy and waste heat, and accumulating operational track records in the field, is CarbonNest's core differentiator.