YC Spring 2026 (P26) company

Apollo Atomics, Inc.

We make the most compact nuclear reactors

industrialsenergyindustrial8 public signals

About Apollo Atomics, Inc.

We make the most compact nuclear reactors

Public traction evidence

Each signal links to the public source used for attribution.

  1. X

    Paul Graham post about Apollo Atomics, Inc. / nuclear reactor startup in the YC batch

    Paul Graham described the nuclear reactor startup in the YC batch after speaking at YC. The official YC Spring 2026 snapshot identifies Apollo Atomics, Inc. as the batch company whose tagline is "We make the most compact nuclear reactors." Native post text: When Jessica and I...

  2. X

    Tom Blomfield native X post mentioning Apollo Atomics, Inc.

    I turned up at the YC office this morning to find @ApolloAtomics installing the primary loop autoclave for their nuclear reactor 😬 It’s the new component that means their SMRs will be 80% smaller than traditional designs.

  3. LinkedIn

    Taro Fukuyama new investment: Apollo Atomics

    🎉 New Investment: Apollo Atomics (YC P26) 🎉 I'm excited to share that I'm investing in Apollo Atomics alongside Y Combinator and Pioneer Fund. Apollo Atomics builds compact nuclear reactors for customers who can't wait for the grid. Conventional nuclear takes over a decade...

  4. X

    Building the modern nuclear company. Quote Y Combinator @ycombinator · May 27 .@ApolloAtomics builds the most compact nuclear reactors with the highest uptime and a deployment time of less than 24 months. Apollo took the pressurized water reactor technology that already powers 80% of the world’s nuclear plants and flipped one part, the steam generator,

    Building the modern nuclear company. Quote Y Combinator @ycombinator · May 27 .@ApolloAtomics builds the most compact nuclear reactors with the highest uptime and a deployment time of less than 24 months. Apollo took the pressurized water reactor technology that already powers...

  5. YouTube

    Let's Build It | Apollo Atomics

    Apollo Atomics YC P26 Launch Video

  6. X

    Tom Blomfield reply explaining Apollo Atomics reactor hardware

    @ApolloAtomics This is the high-pressure water circuit that carries heat away from the reactor core and ultimately generates electricity. Assil, the CEO, spent the last 5 years studying nuclear physics at MIT.

  7. LinkedIn

    The next generation of nuclear won’t be built over decades; it’ll be manufactured. Let’s Build It! 🚀 | Apollo Atomics (YC P26)

    Let’s Build It! 🚀 | Apollo Atomics (YC P26) URL Source: https://linkedin.com/posts/apollo-atomics_the-next-generation-of-nuclear-wont-be-built-activity-7465493085486133248-a66r Markdown Content: Agree & Join LinkedIn By clicking Continue to join or sign in, you agree to...

  8. X

    Quote Assil Halimi @AssilHalimi · Jun 1 Just made it to the YC office. Demo Day loading… @ycombinator @DrewWal43470101

    Quote Assil Halimi @AssilHalimi · Jun 1 Just made it to the YC office. Demo Day loading… @ycombinator @DrewWal43470101