The 22 top clean tech and energy startups from Disrupt Startup Battlefield

The article highlights 22 leading clean tech and energy startups selected from TechCrunch’s annual Startup Battlefield pitch contest, which narrows thousands of applicants to 200 top contenders across various categories. These startups showcase innovative technologies aimed at sustainability and energy efficiency. Notable examples include AraBat, which uses a bio-based recycling process to recover critical metals from spent lithium-ion batteries using plant waste instead of toxic chemicals, and Aruna Revolution, which produces compostable menstrual pads from agricultural by-products, eliminating plastics and harmful substances. Other standout companies include CarbonBridge, which develops bioreactors for microbial gas fermentation to convert waste gases like methane and CO₂ into valuable molecules more efficiently than traditional methods, and Carbon Negative Solutions, which uses AI to transform industrial waste into carbon-negative cement compatible with existing equipment. Additionally, COI Energy operates a marketplace for enterprises to trade excess energy capacity, optimizing grid usage, while Coral offers an AI and blockchain-powered platform for automated carbon accounting and credit tracking. The startups collectively represent cutting-edge