Earthgrid (Plasma-Torch Boring)
Bay Area Competitor — Directed-Energy Pathway
Bay Area startup developing plasma-torch boring rigs. Technology: 48,600°F torches arrayed in a Fibonacci spiral to vaporize hard rock without mechanical cutter heads. Claimed cost economics as low as $300/meter.
Represents a parallel competing technological pathway to TBC's mechanical Prufrock TBM at the same sub-grade infrastructure substrate.
Forward-watch: cap-table verification needed to test whether Earthgrid's investors overlap with TBC's Founders Fund / 8VC / Sequoia operator-class cluster (which would strengthen the operator-class hedged-bets reading) or whether the funding is independent (which would calibrate the hedged-bets thesis downward).
Also in The Boring Company
The Boring CompanyPrivately-held Tunnel Boring Operator (Bastrop, TXSteve DavisBoring Company President + DOGE Operational DeputyPrufrock TBM FamilyBoring Company's Tunnel Boring Machine LineageVegas Loop68-Mile / 104-Station Master Plan (Clark County + Operator-Class Cap Table (Series C)Founders Fund / Sequoia / 8VC / Vy / Valor + SurfaFrederick Douglass Amtrak Tunnel — DOT/FRA Consultation 2026$8B Northeast Corridor Replacement (Boring CompanyDARPA SubT + UnderminerDARPA Subterranean Programs (2018-2022)