EarthGrid™
Richmond, US · 12 known investors
EarthGrid uses patented plasma-powered boring machines to tunnel and excavate through hard rock via thermal spallation, without drilling chemicals, at lower cost and faster speeds than traditional methods. The company aims to build underground infrastructure and a more resilient electrical grid ("SuperGrid").
Founders & leadership
TH
Troy HelminginFounder
DR
David ReesNamed on SEC filing
RP
Rachel PayneNamed on SEC filing
AH
ALYSIA HELMINGNamed on SEC filing
Investors · 12
Aurum Venture PartnersPleasanton
Band of AngelsSilicon Valley
Boston Harbor AngelsBoston · $250K – $1.5M
D3VCDenver
HBS Angels of BostonBoston
Interlock CapitalSan Diego · $25K – $50K
Keiretsu ForumSan Francisco · $250K – $2M
Monozukuri VenturesKyoto · $100K – $300K
Neer Venture Partners$25K – $500K
NW AngelSeattle
Rosecliff VenturesNew York City · $500K
VU Venture PartnersSan Francisco · $200K – $1M
Reported raises · per SEC filings
Form D private placements$52.8M disclosed across 1 round · 2026
▶$52.8MraisedAug 2026 · 552 investors · Other TechnologyRule 506(b)
▶$52.8MraisedAug 2026 · 552 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Troy HelmingExecutive Officer, Director
- David ReesDirector
- Rachel PayneDirector
- ALYSIA HELMINGExecutive Officer, Director
- Offering amount
- $57.6M
- Amount sold
- $52.8M
- First sale
- Jul 2026
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Non-dilutive funding · 1 SBIR/STTR award
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| U.S. Air ForceAir Force | Phase I | 2023 | $74.9K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
Frequently asked questions
- What does EarthGrid™ do?
- EarthGrid uses patented plasma-powered boring machines to tunnel and excavate through hard rock via thermal spallation, without drilling chemicals, at lower cost and faster speeds than traditional methods. The company aims to build underground infrastructure and a more resilient electrical grid ("SuperGrid").
- Who founded EarthGrid™?
- EarthGrid™ was founded by Troy Helming.
- Who are EarthGrid™'s investors?
- EarthGrid™'s investors include Aurum Venture Partners, Band of Angels, Boston Harbor Angels, D3VC, HBS Angels of Boston, Interlock Capital, Keiretsu Forum, Monozukuri Ventures and 4 more.
- How much funding has EarthGrid™ raised?
- EarthGrid™ has disclosed $52.8M raised across 1 round.
- Where is EarthGrid™ headquartered?
- EarthGrid™ is headquartered in Richmond, US.