Dimitris K

Building nuclear data centers at sea
Co-founder & CEO of Atomarine (YC S26)

[Dimitris K @DimitrisKoute]

Today we're announcing Atomarine's $19M seed round!
We are supported by great investors including @ycombinator, @PanteraCapital, @Soma_Capital , @sevensevensix, @Liquid2V, @AudaciousHQ, @e14fund, and many others.

@Atomarine_co is solving the main constraint to AI today: physical buildout. Our floating data centers powered by nuclear, are designed to be built on a single production line, and anchored offshore.
By moving offshore, we do not compete with communities for water, power or land, and we do not drive up their electricity bills or rent. This allows America to stay competitive in the AI race without putting the burden on local communities, while fighting climate change by scaling AI on nuclear instead of fossil fuels.
We have already built a functional proof of concept and we are now racing towards our next big milestone.

If you are a very talented engineer in naval architecture, nuclear or data center design, or just love to work at world-changing, fast-paced companies, reach out. We are hiring!

[Dimitris K @DimitrisKoute]

Named first in YC’s hottest starups by @TechCrunch

https://t.co/gg2TdWu6bR

[Dimitris K @DimitrisKoute]

Named first in YC’s hottest starups by @TechCrunch

https://t.co/gg2TdWu6bR

[Dimitris K @DimitrisKoute]

@bosmeny AI turning against us by willingly helping a terrorist design bioweapons

[Dimitris K @DimitrisKoute]

Great to be featured in @theinnovator!

[Jennifer Schenker @jennschenker]

Boston-based @Atomarine_co is developing nuclear-powered #datacenters at sea. The approach is being touted as an alternative to land-based data centers, which are facing mounting opposition."We move compute offshore,” says CEO Dimitris Koutentak

https://t.co/RvcsFjQvor

[Dimitris K @DimitrisKoute]

Our floating data center has moved on shore for the @ycombinator demo day. Stop by to see how we we’ve been selling compute from sea for a whole month!

[Dimitris K @DimitrisKoute]

Great to be featured in the list of the most ambitious startups of this batch at @ycombinator!

[Dasha @dasha_shunina]

Demo Day of @ycombinator S26 batch is next week.

A sneak peek at what founders are building:

Floating data centers.
Diamond semiconductors.
Biological computers.

It isn’t how much AI is in it. By now, that’s almost expected.

Big question: What becomes possible because AI now exists?

My latest for @Forbes 👇

https://t.co/yQ6fN6COlp

[Dimitris K @DimitrisKoute]

We’ll need a lot of alternative data center deployments. @PhilipJohnston is leading in space, we are going in the ocean.

[Jack Kuhr @JackKuhr]

Starcloud's @PhilipJohnston on alternative places to put data centers, like in the ocean or another country.

"The one that came out recently—there's a company in the current YC batch called Atomarine. And they're basically barges which they can put in international waters and run nuclear power stations on."

"That one, I actually quite like the idea of. Because the problem with all the others is, do you get almost unlimited low cost energy? And the answer is almost no."

"Now Atomarine also doesn't get unlimited low cost energy. But the big constraint of building nuclear on land is permitting."

"And so if they can at least solve that component of it by building them out to sea, then they can get down to like $0.08 or $0.09 per kilowatt hour."

"We're going to be in the end state much less than half a cent per kilowatt hour, including the launch cost. So I'm not worried about it competing with us. But that will definitely compete with building more terrestrial data centers."

[Dimitris K @DimitrisKoute]

@US_1st_Badass Space, or the deep sea 🌊 (or both)!

[Dimitris K @DimitrisKoute]

No one wants data centers near them, we can put them in the 70% of the planet where humans aren't

https://t.co/EmiTTPNqpf

[Dimitris K @DimitrisKoute]

@JasperLort @impactdrones ROCKETSHIP

[Dimitris K @DimitrisKoute]

At @Atomarine_co we are building exactly this: standalone power generation for datacenters placed far from communities. The result is cheaper energy, less resource competition on shore and less impact on communities.

[Innovation Council @innovationcncl]

President Trump is right about data centers: "If you pick the right location, what it means for a community is jobs and lots of money and lower taxes. The data centers now are mandated by me that they build their own electricity, so they're not taking it from the grid."

[Dimitris K @DimitrisKoute]

@davidu We need a new paradigm to aggressively build data centers

[Dimitris K @DimitrisKoute]

With centralized manufacturing and deployment at sea, @Atomarine_co can build the largest deployments far away from on-shore scarce resources.

[a16z @a16z]

It's time to build mega data centers. In counties where they're already operational, the picture is uniformly better since 2024:

- More housing
- Higher home values
- Less unemployment
- More job growth

Charts of the Week: https://t.co/7YT2BXvuUu

[Office of Nuclear Energy | US Department of Energy @GovNuclear]

Nuclear energy is the future.

[Dimitris K @DimitrisKoute]

@Brenten55 By offsetting emissions, our units are effectively *cooling down* the oceans.

[Dimitris K @DimitrisKoute]

Meeting the demand for compute is becoming impossible.

At Atomarine we are building the next generation of AI infrastructure: the most scalable, cheapest and most climate friendly form of standalone compute on Earth.

[Dimitris K @DimitrisKoute]

@GregAbbott_TX @Atomarine_co 👀

[Dimitris K @DimitrisKoute]

This is why @Atomarine_co is building standalone offshore data centers powered by nuclear.

✔️Data centers do not take water needed by local communities - they use abundant seawater,
✔️They do not take power needed by the Texas power grid - they generate it on site,
✔️They lower the cost of electricity on shore
✔️They must not disrupt neighborhoods or rural communities - they sit far away from neighborhoods and have zero emissions.

[Greg Abbott @GregAbbott_TX]

My directive has halted up to 1,800 data center projects.

I established guidelines & guardrails to protect Texas communities:

✔️Data centers must not take water needed by local communities,
✔️They must not take power needed by the Texas power grid,
✔️They must lower the cost of electricity,
✔️They must not disrupt neighborhoods or rural communities.

These guidelines are now the universally applied standard in Texas.

https://t.co/byXzPrKRDV via @thecentersquare

[Dimitris K @DimitrisKoute]

@budwindruid @ycombinator We get around the resource competition issue on land. It's easier and faster to deploy anywhere.

[Dimitris K @DimitrisKoute]

@JamesWorldSpace DM us