AI energy startup Parallax raises $117M to redesign gas turbines for compute power

krisfredrickson · x · 2026-09-25

Diffusion VC-backed Parallax launched with a $117M round (Founders Fund, Eclipse, Lux, Greylock, General Catalyst). Thesis: power, not GPUs, will bottleneck AI — 100k GPUs take months, gas turbines take years, because decades-old designs optimized efficiency with 2,000+ part cores. Parallax optimizes for throughput: 10 MW units, a 3D-printed core collapsing parts count, lower combustion temps enabling common materials and aerospace supply chains, shipping-container footprint.

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