The Fight

Sign In or Create an Account.

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

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.

This article is exclusively
for Heatmap Plus subscribers.

Go deeper inside the politics, projects, and personalities
shaping the energy transition.
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
Spotlight

A Giant Data Center Offers a Permitting Reform Test Case

What would happen to Project Jupiter if the Bipartisan American Affordability and Jobs Act is passed?

•
Project Jupiter.
Heatmap Illustration/Project Jupiter, Library of Congress

One of the nation’s largest data centers is struggling under permitting woes. So let’s play a game: would the bipartisan permitting bill in Congress make the path easier, or might the federal legislation be irrelevant to large hyperscalers under development today?

Meet Project Jupiter, a mega project in southern New Mexico in Dona Ana County under development by Oracle and OpenAI, with financial backing from SoftBank and political support from the Trump administration for being a part of Stargate, a major Trump administration public-private initiative boosting AI development. Project Jupiter would be one of the largest data centers in the country if completed and currently is expected to run on a microgrid powered by fuel cells converting gas to electricity, which the developers claim will burn much cleaner than a typical off-grid gas turbine power plant.

Keep reading...Show less
Yellow
Hotspots

The Trump Administration Is Still Messing with Offshore Wind Farms

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

•
The United States.
Heatmap Illustration/Getty Images

1. New England (and Maryland) – The Trump administration is still messing with offshore wind farms, even while trying to pass a permitting reform deal. Examining the court filings reveals why they may feel empowered to do it — and I’m not sure how this ends.

  • Last Friday, in a legal case brought by anti-wind activists, the Justice Department submitted a motion in federal court to send the construction and operations plan for Orsted’s Revolution Wind project in New England back to the Interior Department for more analysis. On Wednesday, the DOJ entered a similar motion in another case challenging the construction and operations plan for U.S. Wind’s MarWin project off the coast of Maryland in a lawsuit brought by the state’s coastal community of Ocean City.
  • Trump’s actions led some to question whether the president was sabotaging the deal, and others to claim the media coverage itself was an attempt to kill it. Going further, supporters of the bipartisan bill claimed the DOJ's motions were precisely why the bill should become law, implying it would guard offshore wind farms against this sort of maneuver.
  • However, for the bill’s backers, it’s worth considering why the Trump administration believes it has the legal authority to do this. It’s also time to ask whether the bill would actually protect these wind farms against this tactic.
  • To answer those questions, you have to rewind. On May 1, 2025, the Interior Department withdrew a Biden solicitor’s opinion instructing the agency to “strike a rational balance” between wind power and fishing interests. This revocation document is technically not in effect at the moment; one year later, a federal court ruled the opinion was potentially illegal as a part of a preliminary injunction on five anti-renewables actions requested by solar and wind trade groups. The Trump administration is contesting that ruling, and the administration has filed a notice of appeal.
  • In August, despite that opinion being in doubt, a federal judge granted Trump permission under the Outer Continental Shelf Lands Act to remand the construction and operations plan for the now-defunct Atlantic Shores offshore wind farm in the waters of New Jersey. U.S. District Judge Jia Cobb specifically wrote that Atlantic Shores failed to demonstrate the federal government had limitations under OSCLA on revisiting these plans and that the injunction from the litigation on appeal “did not prohibit all reevaluation of agency action.”
  • In the recent Revolution and MarWin filings, Trump’s Justice Department argues the construction and operations plans should be remanded under OSCLA without being vacated. The DOJ motions include claims that previous decision documents did not adequately explain impacts to commercial fishing and other industries that use OSCLA waters. It’s not clear if the administration will win these motions.
  • The bipartisan permitting bill would bar the Interior Department and other federal agencies from taking “any new action that would revoke, rescind, withdraw, terminate, suspend, amend, or alter a federal authorization or permit in effect on or after September 16, 2026,” or “any other action to interfere with or prevent the construction or operation at full capacity of a project that has secured all necessary federal authorizations and permits.” The restriction exempts cases where “the agency is required to take such action by order of a court.” As I wrote in our lengthy piece explaining the bill, this provision has a damages component that allows companies impacted by violations to pursue financial compensation.
  • Here’s the billion-dollar question I expect we won’t have answered unless the bill language is enacted and then litigated: Would the court order exception apply to rulings that grant these motions? Or would the developers be able to sue for damages?

2. Columbia County, N.Y. – New York’s renewable energy permitting office has rejected an upstate solar farm on farmland as a House Democrat representing the area joined hands with the Trump administration in publicly railing against the project.

Keep reading...Show less
Yellow
Q&A

The Developer that Builds Local Support with ‘Right-sized’ Data Centers

A conversation with Harmol Samra of Host Digital

•
The Q&A subject.
Heatmap Illustration

This week’s conversation is with Harmol Samra, CEO of data center developer Host Digital. I asked Samra for a conversation because his team expressed a willingness to offer candid views on the industry’s problems with social license to operate — namely, why is the industry botching this so badly? From his point of view, many could learn a lot from industrial revolutions of the past, and they should be careful not to let mega-project expansions get in the way of broader acceptance of the data center sector.

The following conversation was lightly edited for clarity.

Keep reading...Show less
Yellow