Under the Pacific seafloor sits enough clean, constant power to carry baseload across entire coastal regions. Nobody has figured out how to plug into it.
AI infrastructure is being built at over $1.3 billion of CapEx a day, and the US is on track for an 85-gigawatt power shortfall by 2030. Pacific island nations already pay almost 7x what Americans do for electricity, and everything they burn arrives by ship. Offshore geothermal could fill much of that gap: gigawatts of zero-emission baseload, right where the demand is.
No new physics required. Drilling, turbines, and subsea hardware all exist in adjacent industries. Endurance Energy is integrating them into a single unit you can lower onto the seafloor, hold at 300°C for years, and recover for service. In the past year, the team has completed four prototype deployments at depths up to 3,300 meters and is on track to deploy their first 100kW generator to the Juan de Fuca ridge this fall. That unit will generate power on the seabed and run a co-located compute module -- a complete end-to-end demo, with line of sight to grid power within two years.
We're excited to invest in Endurance's $54M Series A.