cooling
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Hammerhead AI
Hammerhead AI is a Redwood City data center infrastructure startup that uses reinforcement learning agents to turn stranded power into usable AI compute. Its ORCA platform (Orchestrated RL Control Agents) coordinates power, cooling, and GPU workloads in real time so operators can raise token throughput by up to 30% within their existing power envelope - without waiting for new grid capacity. Founded in 2024 by former AutoGrid executives Rahul Kar and Rajeev Singh, the company emerged from stealth in November 2025 with a $10M seed round led by Buoyant Ventures.
Pascal
Pascal is a Cambridge, Massachusetts climate-tech company commercializing solid refrigerants to replace the greenhouse-gas coolants that make air conditioners, heat pumps, and refrigerators bad for the climate. Spun out of Harvard in 2023, Pascal builds cooling systems around barocaloric materials - wax-like layered solids that absorb and release heat when squeezed and released - working at pressures low enough to run on today's mass-market HVAC hardware. The company raised an $8M seed round in 2024 and aims to eliminate refrigerant emissions while cutting cost and boosting efficiency.