• Panthalassa Ocean-3 generates power and process AI workloads directly at sea
• Ocean motion replaces fossil fuels as the primary energy source
• No cables, no anchors, just autonomous systems riding constant waves

Washington state startup Panthalassa is building self-propelled floating platforms that generate electricity from ocean waves and use it to power AI data centers at sea.

The platform, dubbed Ocean-3, has devices that have no anchor, need no fuel, and have no cables connecting them to shore.

Each platform rises and falls with the waves, forcing water through an internal turbine to generate electricity.

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How a floating hydroelectric dam works without any cables

The generated power then runs onboard computing hardware that processes AI tasks on the spot, with results sent back via satellite.

"The ocean is really unlimited in terms of how much energy is available," said Garth Sheldon-Coulson, CEO and co-founder of Panthalassa. "It will really be the cheapest energy on the planet."

The Ocean-3 works more like a floating hydroelectric dam. As waves lift the platform, water inside a tube is forced upward into a ballast tank.

This water then flows into a spinning turbine, which generates electricity. The system is self-propelled, moving like a large Roomba rather than being tethered to the ocean floor.

Multiple units deployed together can function as a single floating data center, with no carbon emissions and no strain on local power grids.

"When you deploy many of our systems, they work together basically as a data center," Sheldon-Coulson said. "So, we think of it as a really good alternative to data centers on land."

Due to high electricity consumption, which drives up carbon emissions and household utility bills, the industry has been looking for an alternative to land-based AI data centers.

There have been discussions about underwater data centers as well as data centers in space, but none of these seem to be short-term plans.

As the demand for compute grows and traditional power grids collapse, Panthalassa offers an alternative that bypasses land acquisition and fossil fuel dependence.

Construction of the Ocean-3 units is already underway, and Sheldon-Coulson expects them to be operating offshore by August of this year.

The company eventually hopes to deploy thousands of these platforms far out at sea.

Funding is no issue, but will it hold on against a roaring ocean?

Panthalassa has all of the private funding it needs because AI companies are eager for quicker, cleaner ways to get power than building data centers on land.

"It is really exciting that we're working on something that is coming along right at the right time," Sheldon-Coulson said, "in a way that's much cleaner, much more sustainable, and quite scalable."

Although the concept is elegant, there is one uncertainty: the ocean. It has a way of breaking things that work perfectly in testing.

Saltwater corrosion, biofouling, and storm damage are not hypothetical problems for marine equipment; they are daily realities.

The Ocean-3 platforms will need to survive hurricanes, salt spray, and years of continuous motion without mechanical failure.

Satellite links also introduce latency that may not suit all AI workloads, and the cost of repairing a broken generator in the middle of the ocean will be huge.

Panthalassa has proven that wave energy can power a floating platform, but proving it can do so reliably for years is a much harder challenge.

Still, for an industry desperate for power and willing to try almost anything, the ocean offers something that no data center on land can match: unlimited space and a power source that never stops moving.

Via CBS News

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