Inertia: Funding, Investors & Team (Aug 2026)
Inertia is a commercial fusion energy company focused on laser-based fusion, grounded in proven physics, and aiming to deliver clean, limitless power. The company plans to innovate within the fusion sector, reinforcing its goal of commercializing fusion energy within the next decade.
Inertia has raised $450M across 1 funding round on record, the most recent a Series A of $450M announced in Feb 2026.
That round is above the $15M median round size for Energy companies tracked on FundedIQ over the last two years.
Inertia Company Profile and Key Stats
Latest funding round on record: Feb 2026.
Inertia Funding Rounds
Inertia Founders and Leadership Team
No contact details are on record for this team yet.
Inertia Funding Compared to Other Energy Startups
Inertia's latest round of $450M is above the median round in Energy. Medians cover the last 24 months of disclosed rounds.
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Inertia Funding FAQs
What does Inertia do?
Inertia is a commercial fusion energy company focused on laser-based fusion, grounded in proven physics, and aiming to deliver clean, limitless power. The company plans to innovate within the fusion sector, reinforcing its goal of commercializing fusion energy within the next decade.
How much funding has Inertia raised?
Inertia has raised $450M across 1 round on record. The most recent is a Series A of $450M announced in Feb 2026.
When did Inertia last raise funding?
Inertia's most recent funding round on record is a Series A of $450M, announced in Feb 2026.
Who founded Inertia?
FundedIQ lists Mike Dunne (Founder) at Inertia.
Where is Inertia headquartered?
Inertia is based in San Francisco, California, United States.
How many employees does Inertia have?
Inertia is in the 11-50 employee band.
How does Inertia's funding compare to other Energy startups?
Inertia's latest round of $450M is above the $15M median round size for Energy companies on FundedIQ across 2,284 tracked companies over the last two years.
About FundedIQ's Inertia Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Inertia is left off this page rather than filled in.
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