SMRTR TechApr 23, 2025Hacker News

Electric Propulsion's Dirty Secret: Why Lithium Can't Fly (Or Float) Profitably

SMRTR summary

Lithium propulsion for aircraft and boats is currently unprofitable and impractical due to fundamental limitations in energy density, grid infrastructure, and costs. Electric propulsion systems face significant challenges including 60x lower energy density than jet fuel, 3.3x higher operating costs, and reduced asset utilization, making them economically unviable without major technological breakthroughs.

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