Skip to main content

Using the ocean to power data centers

▶ Watch Video: Using the ocean to power data centers

There are two global problems you probably don’t like to think about. First, burning gas and coal is still heating up the planet. Second, the thousands of AI data centers popping up all over the country consume enormous amounts of power, which produces even more carbon pollution – and drives up our electric bills. And as Garth Sheldon-Coulson says, this is not going to stop. “We’re still at the beginning of this demand,” he said.

Sheldon-Coulson, the CEO and co-founder of Panthalassa, in Vancouver, Wash., hopes to address both problems at once with wave energy. “The ocean is really unlimited in terms of how much energy is available,” he said. “It will really be the cheapest energy on the planet.”

He likened Panthalassa’s test model, the Ocean-2, to a floating hydroelectric dam. “As it goes up and down with the waves, it causes water that’s in that tube to be forced up into the top. Once it’s in the ball, the water is forced through a turbine. The turbine spins, and that’s what makes the electricity.”

wave-energy-panthalassa-ocean-2-1920.jpg
A test of the Panthalassa Ocean-2 wave energy converter, which would generate electricity to power sea-based data centers. 

Panthalassa

Using a model of Panthalassa’s latest design, the Ocean-3, Sheldon-Coulson explained the most surprising part: there’s no anchor – and no cables. It’s a self-propelled system that is not tethered to the ocean floor. “It’s like a little Roomba, except it’s enormous,” he said.

garth-sheldon-coulson-ceo-and-co-founder-of-panthalassa-with-model-of-ocean-3.jpg
Garth Sheldon-Coulson, CEO and co-founder of Panthalassa, with a model of the Ocean-3.

CBS News

There’s no cable to bring power back to shore, either. In essence, these are floating data centers. They generate power from the waves; process AI computing tasks on the spot; and send us the answers by satellite.

“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.”

Panthalassa has all of the private funding it needs, because it offers AI companies a quicker, cleaner way to get power than building data centers on land. Construction of the Ocean-3s is well under way. 

Sheldon-Coulson expects them to be operating off-shore by around August of this year. Their advantages? “Clean, no fuel, no land use, no getting in the way of other activities on land, and very fast to scale,” he said.

Eventually, the company hopes to deploy thousands of them, far out at sea.

“It is really exciting that we’re working on something that is coming along right at the right time, in a way that’s much cleaner, much more sustainable, and quite scalable, so that we can really meet that demand as it comes,” Sheldon-Coulson said.

    
For more info:

    
Story produced by Annie Iezzi. Editor: Emanuele Secci.

See also:

Liberia once offered Black Americans a new home. Decades on, it is receiving migrants the US wants out

By CNN
(CNN) — Is Liberia an American dumping ground — or a place where a new generation of arrivals can build a new life?That’s the question Liberians are asking themselves after the first people to be deported to the West African country from the United States arrived in the capital, Monrovia.The 20 people on the flight from Louisiana were the first to be sent under an agreement that could see up to 1,200 people transferred to Liberia, a country of less than 6 million people, many of them descendants of formerly enslaved Black Americans.Liberian officials said the new arrivals were from “African and western hemisphere countries.”Liberia is one of several countries that have agreed to take migrants being deported from the US under the Trump administration’s anti-immigration crackdown. The arrivals are coming to a nation whose history is deeply tied to migration from the US.Nearly two centuries ago, free and formerly enslaved Black Americans crossed the Atlantic to settle in what would become Liberia – a name that translates as “land of the free.”Now, a country shaped in part by that migration is accepting people the US wants to remove.For Liberians, that has thrown up a mix of feelings in a country still recovering from a long and bloody civil war.“This country is going through a lot, and having more people come in — can we handle all of this?” said Pheta Morris, 48, a descendant of the Black Americans who settled in Liberia.But she said she sees the new arrivals through the lens of Liberia’s history and is struck by the contrast.“I think about the Americo-Liberians — people who were rejected where they were and needed somewhere to go, and Liberia opened its arms to them,” she said.“Back then, people needed somewhere they could be free, accepted and welcomed. Now, people are being rejected from the US, and Liberia is opening its doors to them.”The first transfer has already faced complications.Reuters reported that five migrants who refused to disembark after arriving in Monrovia were flown instead to Equatorial Guinea in Central Africa, where they are held with more than 30 other migrants previously sent there by the US.A US State Department spokesperson said implementing the Trump administration’s immigration policies was a “top priority,” adding that the department generally does not comment on private diplomatic communications with other governments.CNN has contacted Liberia’s information ministry for more details about the agreement and its terms.A country shaped by AmericaThe first group of free Black Americans arrived in Liberia in the early 1820s.Over the following decades, thousands more made the journey, with the American Colonization Society helping to establish settlements along the West African coast. The US State Department says about 16,000 Black Americans migrated to Liberia during the 19th century.The migration was complicated. Some Black Americans saw Liberia as a chance to escape racism and build a new life, while others opposed the colonization movement and rejected the idea that free Black people should leave the US.Africans rescued from slave ships by the US Navy were also brought to Liberia. The settlements eventually formed the Republic of Liberia, which declared independence in 1847.The American influence remains visible today. Liberia’s flag resembles that of the US; its capital was named Monrovia after America’s fifth President James Monroe, and its early institutions were heavily influenced by Washington.Conmany Wesseh, a former Liberian lawmaker and member of the ruling Unity Party who was nominated as Liberia’s ambassador to the United Nations and later the European Union under former president Ellen Johnson Sirleaf, said that history continues to shape how Liberians view the US.For Wesseh though, the arrival of the deportees raises a more immediate question: Can Liberia, a country still struggling with basic infrastructure and services, accommodate more people?The cost of taking them inLiberia began rebuilding after a 14-year civil war ended in 2003, but Wesseh said the country still needs major investment. Poverty levels remain high and youth unemployment stands at 40%, according to African Development Bank data.“Our country needs a great deal of support,” he said. “We are short on medical facilities, and we have problems with education.”He questioned how the country would manage an influx of people from abroad.“They will have to go to the same hospitals. You won’t create a new hospital for them,” he said. “There’s no spare housing. We don’t have existing housing to put new people in.”Wesseh said Liberia’s development needs may have influenced the government’s decision, with officials hoping the agreement would bring support from Washington.Liberian authorities described the arrangement as humanitarian and said the deportees will be treated as guests who can seek asylum or leave the country.Asked whether he viewed the deal as humanitarian assistance, a diplomatic arrangement or the US outsourcing its immigration enforcement, Wesseh chose the latter.“I think (the administration of US President Donald Trump) just sees this as a place to dump people,” he said. “They want to take them off their hands and dump them in this country.”A chance for a new startFrancis Dennis had long known that his family had roots in the migration of Black Americans to Liberia in the 19th century. But just a few weeks ago, he became curious about his family’s past and began using AI genealogy tools to dig deeper into that history.The 71-year-old former president of the Liberia Chamber of Commerce told CNN he traced his great-great-great-grandfather to Snow Hill, a town on Maryland’s Eastern Shore in the US, using the technology and notes left by his father.He said the research also pointed him to the name of the vessel that carried his ancestor across the Atlantic to Liberia, along with a list of its passengers.Generations later, Dennis is watching another group arrive in Liberia from the US. But he does not believe their circumstances have to define what comes next.“People may have their apprehension about a new life, but it’s also an opportunity,” he said. “Some may be happy, some may resent it, but it opens a new window, a new opportunity.”His own ancestor crossed the Atlantic generations ago and became part of the community that helped shape modern Liberia.Now, he hopes those arriving under very different circumstances will also see the country as a chance for a fresh start.“The ball will be in their court,” Dennis said. “Are they going to seize it as an opportunity for a new start, a fresh start, a new life? Or will they be thinking about the past?”The-CNN-Wire™ & © 2026 Cable News Network, Inc., a Warner Bros. Discovery Company. All rights reserved.
Read Next Story

Related Stories

Latest News
Trump is trying to tighten the screws on an Iran numb to economic pain
49 minutes ago

Trump is trying to tighten the screws on an Iran numb to economic pain

Julián Álvarez fue silbado y se fue sin saludar a la afición: ¿qué sigue en la novela del argentino?

Washington se transformó en un circuito de carreras para el Gran Premio IndyCar Freedom 250

Las vacunas contra el cáncer podrían transformar el tratamiento y la prevención, pero la desinformación amenaza su potencial

WUPAGATechNASAPartnership

NASA taps Georgia Tech for $10.5 million push to build the space workforce