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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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Spotlight

Democrats’ Growing Divide Over Data Centers

It’s pause vs pause-nots.

Data center protests.
Heatmap Illustration/Getty Images

The American climate movement is beginning to look a lot like AI doomers versus the techno-optimists. It’s a dynamic that is winning local bans – and very little else for now.

On one side, you’ve got the left-leaning insurgent grassroots movement against data centers. In many cases this push is in the name of climate action and environmental justice, with activists citing the risks of pollution from gas-fired power and the potential for strain on existing electricity supplies. But in many, many other cases, this movement is decidedly not about climate action; instead it’s a movement addressing everything from energy prices and power over large corporations to AI use generally.

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Hotspots

Local Police Targeted Data Center Opponent, Law Firm Alleges

And more of the week’s top news around development fights.

The United States.
Heatmap Illustration/Getty Images

1. Jefferson County, Alabama – A law firm is alleging that police in the city of Birmingham retaliated against a woman for suing developers of a data center. It might just be a wake-up call for data center developers.

  • Earlier this month, two individuals each with homes next to a proposed 300-megawatt data center in Birmingham filed a class action lawsuit against developer Nebius and the city of Birmingham. The lawsuit alleges “multiple independently fatal zoning violations” rooted in the city’s decision to let Nebius’s project move forward while also finalizing a moratorium, and claims the city has granted approvals in violation of the existing moratorium.
  • On May 18, days after the lawsuit was filed, lawyers for one of the individuals – Madelyn Greene – wrote the Birmingham Police Department stating officers pulled her over while driving through the proposed project site without any lawful reason. According to the letter, which I obtained and was first reported by AL.com, the officers claimed she was harassing police and started filming her while in her car. When she took her own phone out, the officers “abruptly broke off contact, returned to their vehicles, and left the scene.”
  • The letter concludes the traffic stop “timing and location are not coincidental.” It warned that any additional attempts by city police to “stop, detain, surveil, follow, photograph, intimidate, or otherwise harass” people involved in the lawsuit will result in requests for restraining orders.
  • Situations like these vividly illustrate the problems around security forces and large infrastructure projects. Activists fighting the Thacker Pass lithium mine in Nevada were monitored for years. Conflicts between police and oil pipeline protestors are common and complaints about surveillance abound.
  • I feel compelled to say that data center developers and large tech firms would be wise to coordinate with local police on matters such as these – not just for their own benefit but for that of the public. It’s one thing when protesters are arrested at a hearing, but wholly another when members of the public are concerned voicing dissent will lead to retaliation. All that’ll do is aggravate the opposition further.
  • Nebius did not respond to a request for comment.

2. Mason County, Kentucky – This county is the site of yet another eminent domain debacle and I suggest you pay attention to it because it’s now represented by an outgoing congressman with nothing left to lose: Thomas Massie.

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Q&A

What’s Bothering a Free Market Wonk About the Data Center Boom

A conversation with Travis Fisher of the Cato Institute.

Travis Fisher.
Heatmap Illustration

This week’s conversation is with Travis Fisher, an energy policy analyst with the Cato Institute and one of my favorite people to chop it up with on Energy Twitter. I reached out to Fisher for a conversation about how he’s approaching the data center boom as a free market-minded wonk at a time when other figures on the so-called Right are calling for strict regulations on the sector. What I learned is that folks like Fisher are concerned about the scale of the buildout too, but their ideas and approaches wildly differ from the Tucker Carlsons of the world.

As always, our conversation was edited for length and clarity.

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