Hammerhead
A high-voltage vacuum feedthrough for laboratory and industrial equipment.
Maturity not rated
Startup · United States
Avalanche Energy
HQ SeattleFounded 201851-200 employees
Power that moves as fast as we do. We believe humanity’s future demands power without limits—power that moves with us, scales as fast as we do, and reaches every corner of land, sea & space.
Funding4 rounds · $74.1M
- Equity raised
- $74.1M
- Debt, secondaries & grants
- $10.0M
- Latest
- $29.0MStage undisclosed · Feb 3, 2026
Apr 24, 2023Feb 3, 2026
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Feb 3, 2026 | Undisclosed | $29.0M | — | RA Capital Management | 8090 Industries, Congruent Ventures, Founders Fund, Lowercarbon Capital, Overlay Capital, Toyota Ventures | Confirmed |
| Jul 23, 2025 | Grant | $10.0M | — | Washington State Department of Commerce | — | Confirmed |
| Apr 24, 2023 | Series A | $40.0M | — | Lowercarbon Capital | Autodesk, Climate Capital, Congruent Ventures, Founders Fund, Grantham Foundation, MCJ Collective, Toyota Ventures | Confirmed |
| 2021 | Seed | $5.1M | — | Prime Impact Fund | Congruent Ventures, Lowercarbon Capital | Confirmed |
- UndisclosedLed by RA Capital ManagementWith 8090 Industries, Congruent Ventures, Founders Fund, Lowercarbon Capital, Overlay Capital, Toyota VenturesConfirmed$29.0MFeb 3, 2026
- $10.0MJul 23, 2025
- Series ALed by Lowercarbon CapitalWith Autodesk, Climate Capital, Congruent Ventures, Founders Fund, Grantham Foundation, MCJ Collective, Toyota VenturesConfirmed$40.0MApr 24, 2023
- $5.1M2021
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems2
Newest unveiled first. Open a system for its milestone timeline, components and sources.
Capabilities1
| Technology | Role | Maturity | TRL | Notes | Confidence |
|---|---|---|---|---|---|
| Fusion energy | Developer | Development | — | — | Reported |
Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.
People3
- Brian Riordan · LinkedIn ↗
Co-Founder & COO
- Robin Langtry
CEO & Co-Founder
- Mustally Hussain · LinkedIn ↗
Chief Financial Officer
Sources12
Show all 12 sources and supporting evidence
Profile2
- 1
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "USA", "hq_iso2": "US", "id": "54baa6e1-7381-4083-a449-7957aebd6b12"}”
- 2
LinkedIn · Supports Organization · employee range, Organization · founded year, Organization · hq city
“employee_range: 51-200 (profile: 51-200 employees)”
Systems2
- 3
Avalanche Energy · Supports System
“Hammerhead is a compact 300 kV high-voltage vacuum feedthrough designed for UHV-compatible systems requiring a shielded single-conductor interface across an 8 in CF flange.”
- 4
Avalanche Energy · Supports System
“We are developing a 1-100kWe compact fusion machine called “The Orbitron”, which is small enough to sit on your desk.”
Technologies1
- 5
Avalanche Energy · Supports Organization · description, Organization · linkedin url, Organization · name, Organization · website, Organization technology
“Power that moves as fast as we do. We believe humanity’s future demands power without limits—power that moves with us, scales as fast as we do, and reaches every corner of land, sea & space.”
Funding6
- 6
Avalanche Energy · Feb 3, 2026 · Supports Funding round · amount
“today announced $29 million in new funding led by RA Capital Management”
- 7
Avalanche Energy · Jul 23, 2025 · Supports Funding round · amount
“today announced it was awarded $10 million through the Washington State Department of Commerce Green Jobs Grant Program”
- 8
FinSMEs · Apr 24, 2023 · Supports Funding round
“raised $40M in Series A funding”
- 9
Avalanche Energy · Supports Funding round · amount, Organization · ownership
“In April 2023, Lowercarbon Capital led a $40 million Series A funding round for Avalanche Energy”
- 10
FusionXInvest · Supports Funding round
“Avalanche Energy raised $5.13m in seed funding led by Prime Impact Fund”
- 11
Avalanche Energy · Supports Funding round · amount
“In June 2021, Prime Impact Fund led a $5.13 million seed funding round for Avalanche Energy”
People1
- 12
Crunchbase · Supports Organization · employee range, Organization · hq city, Organization · x url, Role
“employee_range: 51-200 (profile: 51-100)”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.