Inertia Funding, Investors & Competitors

Inertia has raised $458M across 3 funding rounds, most recently a $450M Series A in February 2026.

Last Inertia funding round

$450M

Series A · Feb 2026

Cumulative funding Inertia raised

$458M

across 3 funding rounds

Key investors in Inertia

  • Bessemer Venture Partners
  • GV
  • Uncork Capital
  • Long Journey Ventures
  • Threshold
  • IQT
  • Neo
  • WndrCo

Inertia Overview

About Inertia

Inertia is a San Diego-headquartered platform for construction management using location intelligence. The software integrates BIM drawings with real-time site data for project, quality, performance, and compliance oversight. Serving commercial, healthcare, education, and transportation sectors in the US, Inertia reduces delays and cost overruns through proactive issue detection.


Founded

2010

HQ

United StatesSan Diego, CA

Status

Privately held

Customer focus

B2B

Revenue model

Subscription

Inertia Funding History

Inertia has raised a total of $458M across 3 funding rounds.

Inertia's first fundraising round was a $2M seed round in February 2020. The most recent completed round was a $450M Series A in February 2026.

Inertia funding rounds

Inertia funding rounds
DateStageInvestorsRaisedDeal Summary
Feb 2026Series ABessemer Venture Partners (lead); GV; WndrCo; Long Journey Ventures; Neo; Modern Capital; Uncork Capital; Threshold; IQT$450MInertia Enterprises is a fusion energy startup developing laser-driven inertial confinement fusion technology based on breakthroughs at Lawrence Livermore National Laboratory’s National Ignition Facility (NIF), where it achieved scientific breakeven by producing more energy from fusion than input. Co-founded by Twilio co-founder and CEO Jeff Lawson, NIF lead designer Dr. Annie Kritcher, and Stanford professor Mike Dunne, the company aims to commercialize gigawatt-scale power plants starting with the world’s most powerful grid-scale fusion laser system, a mass-manufactured fuel target factory, and a utility-scale plant demonstrating end-to-end energy generation in the 2030s. Each power plant will use 1,000 lasers firing 10 kilojoules 10 times per second on inexpensive 4.5 mm targets costing under $1 to produce, contrasting with NIF’s 192 lasers and labor-intensive targets. In February 2026, Inertia closed a $450 million Series A funding round led by Bessemer Venture Partners, with participation from GV (Google Ventures), IQT (In-Q-Tel), Long Journey Ventures, Modern Capital, Neo, Threshold Ventures, Uncork Capital, and WndrCo. The capital will fund development of the advanced laser, target production line, and a fusion pilot at Lawrence Livermore. Bessemer Partner Byron Deeter highlighted Inertia’s unique combination of frontier physics expertise and commercial roadmap as the first compelling direct fusion investment for the firm. This round aligns with surging investor interest in fusion, where startups have raised over $10 billion, led by Commonwealth Fusion Systems at $2.86 billion. The financing reflects broader momentum in next-generation nuclear energy, with fusion and fission startups attracting significant capital amid rising global energy demand from AI and households. In 2025, nuclear-related funding exceeded $2.5 billion, and 2026 has seen over $270 million early on, including large deals like X-energy’s $700 million Series D. Inertia, a 2-year-old Livermore, California-based company, positions itself to translate NIF’s repeated breakeven results into a commercial pathway for abundant, safe clean energy.
Aug 2024Seed-$5MInertia Enterprises is a California-based fusion energy startup founded in 2024, focused on commercializing inertial confinement fusion using laser-driven technology demonstrated at Lawrence Livermore National Laboratory's National Ignition Facility. The company aims to deliver clean, reliable baseload electricity through a phased roadmap, including building Thunderwall, the world's most powerful average-power laser system, and mass-manufacturing fusion-fuel targets for pilot and gigawatt-scale power plants by 2030. Inertia Enterprises raised $450 million in a Series A funding round led by Bessemer Venture Partners, with participation from GV (Alphabet’s venture arm), Modern Capital, Threshold Ventures, Neo, Uncork Capital, Long Journey Ventures, WndrCo, and IQT. Co-founders include Twilio co-founder and CEO Jeff Lawson, NIF experiment lead Dr. Annie Kritcher as chief scientist, and Stanford professor Mike Dunne. The milestone-based capital supports hardware development, supply chain scaling for laser diodes and fuel pellets costing under $1 each, and de-risking technical milestones ahead of commercial plant construction. The round positions Inertia among top-funded fusion startups, amid over $10 billion in sector investments, with its laser-based approach differentiating from magnet-based competitors. Investors highlight Inertia's edge from proven NIF physics achieving net energy gain, enabling a commercial mindset to reduce costs dramatically using 1,000 lasers firing 10 times per second versus NIF's 192 lasers.
Feb 2020Seed-$2M-

Who has invested in Inertia?

9 investors have backed Inertia across its funding rounds, including Bessemer Venture Partners, GV, Uncork Capital, Long Journey Ventures, Threshold and IQT.

Lead investors include Bessemer Venture Partners.


Inertia Investors

Investors in Inertia by funding rounds participated
InvestorHQRoundsRoleFirst check
GVUnited StatesSan Francisco, CA1ParticipantFeb 2026
WndrCoUnited StatesLos Angeles, CA1ParticipantFeb 2026
Long Journey VenturesUnited StatesSan Francisco, CA1ParticipantFeb 2026
NeoUnited StatesSan Francisco, CA1ParticipantFeb 2026
Bessemer Venture PartnersUnited StatesSan Francisco, CA1LeadFeb 2026
Modern CapitalUnited StatesCharleston, SC1ParticipantFeb 2026
Uncork CapitalUnited StatesSan Francisco, CA1ParticipantFeb 2026

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Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples

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Inertia Competitors

Inertia competitors include listed companies like Constellation Software, Topicus and Cadence Design Systems, and private ones like SafetyCulture, BuildOps and Buildots.

Public and private companies comparable to Inertia
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Constellation SoftwareCanadaCanadaPublicly listed$12B$2.5B$43B3.5x
TopicusNetherlandsNetherlandsPublicly listed$1.8B$393M$5.4B3.0x
SafetyCultureAustraliaSydneyPrivate$84M-$1.8B21.1x
BuildOpsUnited StatesLos Angeles, CAPrivate$52M-$1B19.2x
BuildotsIsraelTel AvivPrivate--$1B-
Cadence Design SystemsUnited StatesUnited StatesPublicly listed$5.3B$1.8B$77B13.0x

Inertia Public Comps

Inertia is still privately-owned, but its public comps include Quanta Services, Cadence Design Systems, Vinci, CRH, Comfort Systems USA, Larsen & Toubro, Autodesk, Constellation Software, Samsung C&T and Ferrovial.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Quanta Services$28B$2.5B3.5x2.7x38.8x26.3x
Cadence Design Systems$5.3B$1.8B14.8x13.0x44.3x27.3x
Vinci$87B$16B1.2x1.1x6.4x6.3x
CRH$37B$7.6B2.0x1.9x10.0x9.4x
Comfort Systems USA$9.1B$1.4B5.9x4.5x37.9x25.4x
Larsen & Toubro$30B$3.1B2.1x2.0x19.9x19.2x
Autodesk$7.2B$1.8B6.3x5.7x25.6x14.1x
Constellation Software$12B$2.5B4.0x3.5x18.5x12.9x

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Common questions about Inertia

When was Inertia founded?Inertia was founded in 2010.
Where is Inertia headquartered?Inertia is headquartered in San Diego, CA, United States.
Is Inertia publicly listed?No, Inertia is a private, VC-backed company.
How much funding has Inertia raised?Inertia has raised $458M across 3 funding rounds.
What was Inertia's last funding round?Inertia's last funding round was a $450M Series A in February 2026, led by Bessemer Venture Partners.
Who are Inertia's investors?Inertia's investors include GV, WndrCo, Long Journey Ventures, Neo, Bessemer Venture Partners, Modern Capital, Uncork Capital, Threshold and IQT.
Which companies are comparable to Inertia?Companies comparable to Inertia include Constellation Software, Topicus, SafetyCulture, BuildOps, Buildots and Cadence Design Systems.

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