Fundz

Inertia Enterprises raises $450 million in a Series A round led by Bessemer Venture Partners to commercialize proven fusion science for limitless clean energy.

PRIVATEFeb 11, 2026

Amount Raised

$450 Million

Round Type

Series A

LivermoreEnergyRenewable Energy

Investors

Modern CapitalThreshold VenturesGVBessemer Venture Partners

Description

Inertia Enterprises has announced a new $450 million investment to commercialize its fusion energy technology. The Series A round was led by Bessemer Venture Partners, alongside other notable investors. This funding will advance Inertia's plans to build a fusion pilot plant and a production line for fuel targets. The company's goal is to provide grid-scale energy through its groundbreaking approach to fusion.

Quick answer

Inertia raised $450 Million in a Series A round, dated February 11, 2026. Investors: Modern Capital, Threshold Ventures, GV and Bessemer Venture Partners. Inertia is based in Livermore, California, United States.

How much did Inertia raise?
Inertia raised $450 Million in a Series A round on February 11, 2026.
Who invested in Inertia?
Modern Capital, Threshold Ventures, GV and Bessemer Venture Partners are named as investors in this round.
What does Inertia do?
Inertia is the commercial fusion energy company.
Where is Inertia based and how big is it?
Inertia is based in Livermore, California, United States. Fundz records about 63 employees.
Who are the decision-makers at Inertia?
Fundz holds 2 contacts at Inertia, including the Director of Talent Acquisition. Names and contact details are shown to Fundz members.

Source: Fundz verified event record.

Who else raised in Energy and Renewable Energy around the same time

Companies in the same sectors as Inertia that raised within 45 days of this round, from Fundz verified event records.

  • Fermi raised $165M (Debt Financing) on March 27, 2026.
  • Helix Earth Technologies raised $12M (Seed) on March 26, 2026.
  • Portland General Electric raised $350M (Debt Financing) on March 24, 2026.
  • Pranos Fusion raised $6.8M (Seed) on March 24, 2026.
  • ArtIn Energy raised $255M (Private Equity) on March 24, 2026.
  • pH7 Technologies raised $3.2M (Grant) on March 24, 2026.

Who to call at Inertia, and when

A new round usually means Inertia is about to hire and buy. The teams that reach out first get the meeting.

  • An alert the day Inertia raises, hires an executive or expands, scored against what you sell
  • The decision-makers there, with verified emails
  • Who you already know at Inertia, from your own LinkedIn network

Works inside ChatGPT and Claude. Ask who to call at Inertia. With Fundz connected, it knows.

Watch Fundz in
See plan options
Trusted byOracleSnowflakeCloudflareLinkedInGoogleSalesforce 4.8/5 on G2

Company Information

Company

Inertia

Location

Livermore, California, United States

About

Inertia is the commercial fusion energy company. We lead laser-based fusion, the only category of fusion energy based on proven physics. To create a world with limitless clean energy, we’re building big. The most powerful laser system ever created for fusion energy. Mass-manufactured targets for affordable fusion fuel. And power plants that can deliver fusion energy at grid-scale. Inertia is creating star power for life on Earth.

AI made execution free. Knowing first is the whole game now.

Fundz sees it the moment Inertia raises, hires an exec or expands, usually minutes after it happens, and tells you who to reach.

Related People

2 contacts
Verified contactsSabrina, Director of Talent Acquisition hidden hiddenSee plans and pricing
Predictive Intelligence
Strategic

ML-powered predictions for Inertia's next move

See what Strategic adds

Funding Insights

What this usually means
Typical timeline to Series B
Series A companies typically raise their next round in 10-18 months

Inertia raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

145 of these a day, filtered to the companies you pick, with the decision-maker attached.

5 screens from a live account. No signup.

Fundz is a real-time business intelligence platform powered by agentic AI that proactively delivers personalized daily signals, including funding rounds, executive changes, M&A activity, 13F institutional filings, SEC 8-K events, investor activity, and website modifications, based on each user's watchlist and ICP. A trusted data source at firms such as BlackRock, Oracle, Kleiner Perkins, LinkedIn, HubSpot, and Cloudflare, Fundz democratizes the institutional-grade intelligence that previously required a PitchBook or Bloomberg terminal. Features include Daily Briefing for AI-powered daily briefings, and unified cross-signal alerts across 281,000+ organizations. Developers and data teams can access these signals programmatically via the Fundz Funding Data API, with transparent published pricing.