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Startup · United States

Exowatt

HQ Miami, United StatesFounded 2023

Exowatt is revolutionizing renewable energy with its modular, full-stack solutions designed to provide up to 24 hours of dispatchable power and heat for commercial and industrial applications. Their flagship product, the Exowatt P3, captures solar energy, stores it as heat in a long-duration thermal battery, and converts it into electricity on demand. This innovative approach addresses the intermittency of renewable sources, offering a sustainable and cost-effective alternative to traditional energy systems. Founded in 2023 by energy industry veterans, Exowatt has secured $20 million in seed funding from prominent investors, including Andreessen Horowitz, Sam Altman, and Atomic, positioning the company to transform energy infrastructure for the AI era and beyond.

Startup
WebsiteLinkedInX
Total raised
$140M
5 rounds
Last round
Undisclosed
Series B · 2026

Funding5 rounds · $140M

Disclosed
$140M
Latest
UndisclosedSeries B · 2026
Cumulative raised$140M
Apr 22, 2024Nov 13, 2025

Totals add known amounts using recorded USD conversions where available; other currencies are shown separately. A ~ marks an estimated amount.

People2

Hiring observations10 listings

A sample of observed listings, not a total vacancy count. Availability may have changed since collection. Categories are inferred from job titles.

Sources7

Profile1

  1. 1
    OtherExowatt - Black Flag Job Board

    Black Flag · Supports Organization

    “Designs modular, dispatchable solar energy systems to provide ultra-low-cost, reliable power for AI data centers and commercial or industrial customers.”

Funding5

  1. 2
    NewsVenture Capital News: Exowatt Lands Additional $50M

    VC News Daily · Nov 13, 2025 · Supports Funding round · amount

    “The $50 million capital investment was led by MVP Ventures and 8090 Industries and is an extension to Exowatt's April 2025 $70 million Series A round”
  2. 3
    CompanyExowatt Closes $70 Million in Series A Funding to Deploy and Scale the Exowatt P3

    GlobeNewswire · Apr 22, 2025 · Supports Funding round, Funding round · amount

    “today announced the close of its $70 million Series A round”
  3. 4
    NewsOpenAI's Sam Altman is funding a green-energy moonshot as AI's power demands grow to ‘insatiable’ levels

    Fortune · Apr 22, 2024 · Supports Funding round

    “OpenAI CEO Sam Altman led a funding round for a solar energy startup”
  4. 5
    NewsVenture Capital News: Exowatt Launches with $20 Million in Seed Funding

    VC News Daily · Apr 22, 2024 · Supports Funding round · amount

    “a $20 million seed round from a16z, Atomic, and Sam Altman”
  5. 6
    DatabaseExowatt - Multiples company profile

    Multiples · Supports Funding round

    “Amount undisclosed · Feb 2026”

People1

  1. 7
    OtherBlack Flag 100

    Black Flag · Supports Organization, Role

    “Exowatt is revolutionizing renewable energy with its modular, full-stack solutions designed to provide up to 24 hours of dispatchable power and heat for”

Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.