Sign In or Create an Account.

By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy

Podcast

How to Decarbonize the World’s Biggest Ships

Inside episode 24 of Shift Key.

A container ship.
Heatmap Illustration/Getty Images

Jesse is on vacation until August, so this is a special, Rob-only summer episode of Shift Key.

Shipping is the backbone of the modern economy. At least 80% of all goods worldwide are shipped as ocean cargo, and the global economy rises and falls on the free movement of gigantic ships across the sea. But container ships and bulk carriers burn what’s known as bunker fuel, one of the dirtiest fossil fuels. The international shipping industry generates 3% of global carbon emissions, a proportion that’s projected to rise through the century.

Most proposals to decarbonize ocean freight have focused on using ammonia or other zero-carbon liquid fuels. But Fleetzero, a Bill Gates-backed startup, is trying to use the only technology that it says can get cheap enough to compete with oil: batteries. The Alabama-based company is building batteries big enough to hybridize — and, eventually, power outright — the world’s largest ships.

This week, Rob chats with Steven Henderson, the cofounder and CEO of Fleetzero and a graduate of the U.S. Merchant Marine Academy. They talk about Steven’s history in the oil and gas industry, why batteries will beat liquid fuels, and how to put out a fire in the middle of the ocean.

This episode of Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap.

Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.

You can also add the show’s RSS feed to your podcast app to follow us directly.

Here is an excerpt from our conversation:

Steven Henderson: What’s good about batteries, you can step into that, where you can use existing infrastructure and build on it. You don’t need a new fundamental technology to do this. The numbers to do this are not outside the realm of possibility.And if you think about it in terms of global … it’s about one-fifth of what you would need for electric cars and trucks.

So it’s not — yeah, these are big numbers. But if you think about an electric future, this is one of many parts, you know, so this is not going to be the hardest part on the grid. In fact, it’s a bunch easier because you don’t have to go send it across the country, and there are generating capabilities in and around ports, and you can use existing stuff.

Robinson Meyer: I would imagine even switching a ship from bunker fuel to electricity generated by natural gas, which is often just right there would be …

Henderson: Yeah, it’s a huge savings from carbon. And honestly, if you went to coal, it’s still cleaner. Ships, because of just the way they operate, there’s CO2 emissions, but it’s a huge SOx and NOx, it’s a sulfur and nitrous oxides emission. And at least with a stationary coal powered plant, at least in the West, there’s regulations on what you can send out the stack. When you’re in the middle of the ocean, these things, you know, sometimes they’re choking up some pretty nasty stuff.

So it’s an advantage, even if you go from coal. Obviously, we hope that all electricity coming into this is going to be clean over time. But if you suddenly have, oh, I need 100 megawatts of power, and I need to, you know, swap out this power plant — well, what if I need 300 megawatts of power? Now I’m going to build a new power plant, and the economics on that are going to stand on their own, and I can build it clean from the beginning, so I don’t have to scrap the existing infrastructure to make the grid clean.

So that’s why it’s super important to electrify the consumers, and that increased demand on the grid is how you clean up the grid.

This episode of Shift Key is sponsored by …

Watershed’s climate data engine helps companies measure and reduce their emissions, turning the data they already have into an audit-ready carbon footprint backed by the latest climate science. Get the sustainability data you need in weeks, not months. Learn more at watershed.com.

As a global leader in PV and ESS solutions, Sungrow invests heavily in research and development, constantly pushing the boundaries of solar and battery inverter technology. Discover why Sungrow is the essential component of the clean energy transition by visiting sungrowpower.com.

Music for Shift Key is by Adam Kromelow.

Blue

You’re out of free articles.

Subscribe today to experience Heatmap’s expert analysis 
of climate change, clean energy, and sustainability.
To continue reading
Create a free account or sign in to unlock more free articles.
or
Please enter an email address
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Podcast

What the Supreme Court’s Tariff Ruling Means for the Energy Transition

In this emergency episode, Rob unpacks the decision with international supply chain specialist Jonas Nahm.

The Supreme Court.
Heatmap Illustration/Getty Images

The Supreme Court just struck down President Trump’s most ambitious tariff plan. What does that ruling mean for clean energy? For the data center boom? For America’s industrial policy?

On this emergency episode of Shift Key, Rob is joined by Jonas Nahm, a professor of economic and industrial policy at the Johns Hopkins School of Advanced International Studies in Washington, D.C. They discuss the ruling, the other authorities that Trump could now use to raise trade levies, and what (if anything) the change could mean for electric vehicles, solar panels, and more.

Keep reading...Show less
Blue
The Supreme Court.
Heatmap Illustration/Getty Images

This transcript has been automatically generated.

Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.

Keep reading...Show less
Blue
Spotlight

Battery Developers Are Feeling Bullish on Mamdani

NineDot Energy’s nine-fiigure bet on New York City is a huge sign from the marketplace.

Battery installation.
Heatmap Illustration/NineDot Energy, Getty Images

Battery storage is moving full steam ahead in the Big Apple under new Mayor Zohran Mamdani.

NineDot Energy, the city’s largest battery storage developer, just raised more than $430 million in debt financing for 28 projects across the metro area, bringing the company’s overall project pipeline to more than 60 battery storage facilities across every borough except Manhattan. It’s a huge sign from the marketplace that investors remain confident the flashpoints in recent years over individual battery projects in New York City may fail to halt development overall. In an interview with me on Tuesday, NineDot CEO David Arfin said as much. “The last administration, the Adams administration, was very supportive of the transition to clean energy. We expect the Mamdani administration to be similar.”

Keep reading...Show less
Yellow