Climate tech investment in 2026 is maturing from hype to fundamentals, focusing on scalability, speed, and profitability, with total 2025 VC/growth funding reaching $40.5bn. Key bets include AI-driven energy solutions, nuclear energy, synbio construction, and biomining for critical metals. Despite political uncertainty, 2026 sees renewed corporate demand for decarbonization technology, with investors increasingly focused on energy infrastructure and adaptation technologies.