Subsea geothermal startup raises $54M

Endurance Energy is building mass-manufacturable subsea geothermal generators aimed at accessing low-cost baseload power beneath the seafloor

The demand for clean, always-on power is exploding, and the grid can't keep up. The team at Endurance Energy is going after one of the biggest untapped sources on the planet: geothermal heat beneath the seafloor. They're building systems to
Ranked #10 on backlist 2026-06-11 (11 Jun 2026 UTC) · by (Todd Jackson) ·

How it ranks: Backlist reads my Twitter/X timeline, scores every tweet for substance with an LLM rubric (not engagement), and publishes the daily top picks with a one-line takeaway. Curated by Surya Dantuluri.