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
Sparks

Trump Will ‘Deal’ with Wind and Solar Tax Credits in Megabill, GOP Congressman Says

“We had enough assurance that the president was going to deal with them.”

Ralph Norman
Kevin Dietsch/Getty Images

A member of the House Freedom Caucus said Wednesday that he voted to advance President Trump’s “big, beautiful bill” after receiving assurances that Trump would “deal” with the Inflation Reduction Act’s clean energy tax credits – raising the specter that Trump could try to go further than the megabill to stop usage of the credits.

Representative Ralph Norman, a Republican of North Carolina, said that while IRA tax credits were once a sticking point for him, after meeting with Trump “we had enough assurance that the president was going to deal with them in his own way,” he told Eric Garcia, the Washington bureau chief of The Independent. Norman specifically cited tax credits for wind and solar energy projects, which the Senate version would phase out more slowly than House Republicans had wanted.

Keep reading...Show less
Politics

Trump Promised Deregulation. His New Law Would Regulate Energy to Death.

The foreign entities of concern rules in the One Big Beautiful Bill would place gigantic new burdens on developers.

Power lines and Trump's tie.
Heatmap Illustration/Getty Images

Trump campaigned on cutting red tape for energy development. At the start of his second term, he signed an executive order titled, “Unleashing Prosperity Through Deregulation,” promising to kill 10 regulations for each new one he enacted.

The order deems federal regulations an “ever-expanding morass” that “imposes massive costs on the lives of millions of Americans, creates a substantial restraint on our economic growth and ability to build and innovate, and hampers our global competitiveness.” It goes on to say that these regulations “are often difficult for the average person or business to understand,” that they are so complicated that they ultimately increase the cost of compliance, as well as the risks of non-compliance.

Keep reading...Show less
Blue
Politics

AM Briefing: The Megabill Goes to the House

On the budget debate, MethaneSAT’s untimely demise, and Nvidia

House Republicans Are Already Divided on the Megabill
Heatmap Illustration/Getty Images

Current conditions: The northwestern U.S. faces “above average significant wildfire potential” for July • A month’s worth of rain fell over just 12 hours in China’s Hubei province, forcing evacuations • The top floor of the Eiffel Tower is closed today due to extreme heat.

THE TOP FIVE

1. House takes up GOP’s megabill

The Senate finally passed its version of Trump’s One Big Beautiful Bill Act Tuesday morning, sending the tax package back to the House in hopes of delivering it to Trump by the July 4 holiday. The excise tax on renewables that had been stuffed into the bill over the weekend was removed after Senator Lisa Murkowski of Alaska struck a deal with the Senate leadership designed to secure her vote. In her piece examining exactly what’s in the bill, Heatmap’s Emily Pontecorvo explains that even without the excise tax, the bill would “gum up the works for clean energy projects across the spectrum due to new phase-out schedules for tax credits and fast-approaching deadlines to meet complex foreign sourcing rules.” Debate on the legislation begins on the House floor today. House Speaker Mike Johnson has said he doesn’t like the legislation, and a handful of other Republicans have already signaled they won’t vote for it.

Keep reading...Show less
Yellow