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Q&A

Eric Dresselhuys, CEO of ESS, Makes the Case for Iron-Flow Batteries

An interview about the politics of energy storage — and whether different technologies can help

Eric Dresselhuys
Heatmap Illustration

While in Anaheim for RE+ last week, I met with Eric Dresselhuys, CEO of long duration iron-flow battery storage manufacturer ESS Inc. We chatted about battery fires, community buy-in, and the future of China policy. I came in expecting optimism and left feeling we need a lot more conversations like this one.

The following is an abridged version of our conversation that has been edited for clarity.

How does your product address the opinion that battery storage has a buy-in problem?

It’s not so much an opinion as just reporting the obvious, which is that lithium-ion batteries on the grid have a buy-in problem. Maybe if you’re in rural western Australia nobody cares because there are no human beings around, but if you look at the need for energy storage to facilitate the energy transition, it’s pretty clear we have to put batteries all over the place and specifically close to where human beings live. And that’s a problem.

Can iron-flow help solve that problem? I think unequivocally we can. It’s a very different architecture. It’s a battery that’s really designed from the beginning to operate as a grid backup battery. If you go back to look at lithium, it was never designed to go onto the grid. It was designed to go into camcorders, phones. This is not the technology I think anybody would’ve picked for the grid if they had started from scratch.

Are you seeing any change in demand for your product from protests over lithium battery projects?

I think it’s the old gag of all politics are local. The politics of siting is a local problem. What’s simultaneously true is adoption of storage on the grid is growing at a phenomenally high rate. And yet there are stories [about opposition] all over the place. There was just one up in Marin County, California, where the community said it’s in an area adjacent to wetlands. And they said you know what? We’re just not going to put a–

But are these communities opposed to lithium storage actually choosing iron-flow over these projects, or are they just saying no to any development?

Right now, they’re just saying no. The communities are not going to solve the problem. They’re going to tell you what is unacceptable and it’s going to be somebody else’s job to solve the problem.

I’ll use Schiphol Airport in Amsterdam [as an example]. They said, we have thousands of gallons of jet fuel laying around. And people. And airplanes. We can’t put a lithium battery out here. So they’re using an iron-flow and sought out a non-lithium battery to solve their energy storage problems because it was safer.

China policy looms large over the future of U.S. battery supplies. What do you think the final endgame will be of our approach to China’s dominance in this business segment?

It’s a great question that I don’t think I know the answer to. I think the next step is to try and get the playing field somewhat level. The amount of subsidy that goes into renewables in general and batteries in particular in China is daunting. People talk about the IRA and all these things as if it’s a lot of money, but it’s a pittance compared to what China is putting in.

Getting the playing field a little more level in the short term through a combination of incentives here and tariffs coming on will be a next step. Until we get carbon accounting — cradle-to-grave carbon accounting — it’ll be hard to get things totally level because in the U.S. we enforce environmental laws and we don’t employ prison labor to build [these] things. Until we get that full ESG accounting, I think there’s going to be some limitation.

Okay one fun question – what was the last song you listened to? Keeping ‘em honest here at Heatmap News.

“Impossible Germany” by Wilco.

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Q&A

How to Build a Socially Responsible Data Center

Chatting with DER Task Force’s Duncan Campbell.

The Fight Q&A subject.
Heatmap Illustration/Getty Images

This week’s conversation is with Duncan Campbell of DER Task Force and it’s about a big question: What makes a socially responsible data center? Campbell’s expansive background and recent focus on this issue made me take note when he recently asked that question on X. Instead of popping up in his replies, I asked him to join me here in The Fight. So shall we get started?

Oh, as always, the following conversation was lightly edited for clarity.

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Hotspots

The Indiana City Saying ‘Tech Yeah!’ to Data Centers

Plus the week’s biggest development fights.

The United States.
Heatmap Illustration/Getty Images

1. LaPorte County, Indiana — If you’re wondering where data centers are still being embraced in the U.S., look no further than the northwest Indiana city of LaPorte.

  • LaPorte’s city council this week unanimously approved the expansion of a data center campus already under construction. Local elected officials were positively giddy at the public hearing on the vote, with city mayor Tim Doherty donning an orange t-shirt exclaiming a pro-AI pun: “TECH YEAH!”
  • Doherty explained his enthusiasm at the hearing in simple dollars and cents. State cuts to education had “put our local schools in an impossible position,” he said, asking: “Will the 15% in revenue sharing give our kids a superior education and the best chance at a future in this tech-driven world?”
  • That revenue sharing Doherty referenced was Microsoft’s deal in March with LaPorte’s school corporation, which stated 15% of the data center’s property tax revenue would go to the corporation for 20 years. So good was that deal some city councilors were vocally defiant against those who were opposed to the project expansion.
  • “Microsoft seems like they’re going to be a good partner for the city. They care. They’re presenting what I think is a good deal and trying to take care of people around them. So I’m all for it and if anybody wants to vote me out, hey, go for it,” councilor Roger Galloway told the hearing room.
  • The lesson? Give lots of money to education and you’re more likely to get a permit. Tale as old as the mining industry.

2. Cumberland County, New Jersey — A broader splashback against AI infrastructure is building in South Jersey.

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Spotlight

Data Centers Are Splintering the American Right

Mounting evidence shows that Republican voters are rapidly turning against artificial intelligence.

Tucker Carlson and a data center protest sign.
Heatmap Illustration/Getty Images, Library of Congress

The data center backlash is causing a crisis of faith amongst American conservatives over land use, energy abundance, and corporate regulation. The Republican Party — not to mention the politics of AI infrastructure — may never be the same.

In the last week, I’ve seen a surge of Republican politicians pushing to temporarily ban data centers in conservative states. In South Carolina, Representative Nancy Mace, a leading GOP gubernatorial primary candidate, called for a statewide moratorium on new data centers. In Texas, the sitting agriculture commissioner Sid Miller proposed the same for the Lone Star State. Ditto in North Dakota where the idea got backing from a GOP primary candidate for a Public Service Commission seat.

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