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South 8 Technologies

South 8 Technologies

Private
San Diego, CaliforniaEnergy & Sustainabilityhttps://south8.com/

Last Round

Grant

Apr 2, 2026

Total Funding Raised

$51.8M

Momentum

Top 25%

of companies Caplight tracks

Company Overview

South 8 Technologies is a clean energy company that develops liquefied gas electrolytes and lithium-ion batteries, enhancing energy density and performance at low temperatures while reducing flammability for applications in transportation, aerospace, and military sectors.

Sector

Energy & Sustainability

Verticals

Energy Storage, Advanced Materials, Defense Tech, Space Technology

Business Model

B2B

Customer Profile

Hardware Sales, Government Contracts

AI Layer

Non-AI

Keywords

liquefied gas electrolyteLiGasextreme cold batteryarctic batteryspace-ready batterylithium-ion batterydefense batterybattery electrolytecylindrical cellaerospace batterybattery manufacturingmission-critical powercold-weather techenergy storageadvanced materials

Historical Pricing

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Caplight Momentum Score

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South 8 Technologies Comps

Public and private peers based on sector, stage, and business model.

South 8 Technologies comps — public and private peers by sector, stage, and business model
CompanyStatusEst. ValuationRev Multiple
OpenAIPrivate$86.0B~40x
CoherePrivate$5.0B--
Competitor 1Public$XX.XBXXx
Competitor 2Public$XX.XBXXx

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South 8 Technologies Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
GrantApr 2, 2026
VC RoundDec 9, 2025
GrantSep 23, 2024
GrantApr 30, 2024
StrategicAug 16, 2023
Grant
Jan 11, 2023

Key People

Founding team and executive leadership

Jungwoo Lee

CEO & Co-Founder, Chief Technology Officer & Co-Founder

Founding Team

Cyrus Rustomji

Chief Science Officer

Executive Team

South 8 Technologies Investors

Notable investors and investment history

South 8 Technologies investors
InvestorRounds
Lockheed Martin VenturesGrant, VC Round, Strategic
LG Technology VenturesSeries A, VC Round, Strategic, Grant
Foothill VenturesSeries A, VC Round, Strategic, Grant
Porsche VenturesVC Round, Grant
Shell VenturesSeries A, Strategic
Anzu PartnersVC Round, Strategic, Grant, Series A
California Energy CommissionGrant

Market signals

Structured signals derived from secondary market and firmographic data.

  • Apr 2, 2026

    Expanding San Diego HQ to scale production capacity for LiGas electrolyte and lithium-ion cells.

  • Apr 2, 2026

    Launched its liquefied gas electrolyte (LiGas) platform.

South 8 Technologies Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
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South 8 Technologies Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about South 8 Technologies's valuation, stock price, and market status.

Firmographic Details

HeadquartersSan Diego, California
Employee Range46
Year Founded2015
Last FundingApr 2, 2026

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