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Algatech Nusantara, a biotechnology startup in Yogyakarta, is focusing on microalgae for carbon capture, addressing challenges in carbon accounting methodologies in Indonesia. The company has developed a closed photobioreactor system to measure CO₂ absorption and oxygen production efficiently.

Microalgae can absorb carbon dioxide significantly faster than trees, with a life cycle of about seven days. However, issues such as carbon storage and energy consumption for aeration remain. Algatech is currently focusing on several strains, including spirulina and chlorella, for various applications.

Despite the technological advancements, the lack of national standards for microalgae carbon accounting hampers official emission reduction claims. The company aims to promote microalgae not just as a carbon capture tool but as a paradigm shift in addressing air pollution, with potential applications in food, agriculture, and pharmaceuticals.