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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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Hotspots

GOP Lawmaker Asks FAA to Rescind Wind Farm Approval

And more on the week’s biggest fights around renewable energy.

The United States.
Heatmap Illustration/Getty Images

1. Benton County, Washington – The Horse Heaven wind farm in Washington State could become the next Lava Ridge — if the Federal Aviation Administration wants to take up the cause.

  • On Monday, Dan Newhouse, Republican congressman of Washington, sent a letter to the FAA asking them to review previous approvals for Horse Heaven, claiming that the project’s development would significantly impede upon air traffic into the third largest airport in the state, which he said is located ten miles from the project site. To make this claim Newhouse relied entirely on the height of the turbines. He did not reference any specific study finding issues.
  • There’s a wee bit of irony here: Horse Heaven – a project proposed by Scout Clean Energy – first set up an agreement to avoid air navigation issues under the first Trump administration. Nevertheless, Newhouse asked the agency to revisit the determination. “There remains a great deal of concern about its impact on safe and reliable air operations,” he wrote. “I believe a rigorous re-examination of the prior determination of no hazard is essential to properly and accurately assess this project’s impact on the community.”
  • The “concern” Newhouse is referencing: a letter sent from residents in his district in eastern Washington whose fight against Horse Heaven I previously chronicled a full year ago for The Fight. In a letter to the FAA in September, which Newhouse endorsed, these residents wrote there were flaws under the first agreement for Horse Heaven that failed to take into account the full height of the turbines.
  • I was first to chronicle the risk of the FAA grounding wind project development at the beginning of the Trump administration. If this cause is taken up by the agency I do believe it will send chills down the spines of other project developers because, up until now, the agency has not been weaponized against the wind industry like the Interior Department or other vectors of the Transportation Department (the FAA is under their purview).
  • When asked for comment, FAA spokesman Steven Kulm told me: “We will respond to the Congressman directly.” Kulm did not respond to an additional request for comment on whether the agency agreed with the claims about Horse Heaven impacting air traffic.

2. Dukes County, Massachusetts – The Trump administration signaled this week it will rescind the approvals for the New England 1 offshore wind project.

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Q&A

How Rep. Sean Casten Is Thinking of Permitting Reform

A conversation with the co-chair of the House Sustainable Energy and Environment Coalition

Rep. Sean Casten.
Heatmap Illustration

This week’s conversation is with Rep. Sean Casten, co-chair of the House Sustainable Energy and Environment Coalition – a group of climate hawkish Democratic lawmakers in the U.S. House of Representatives. Casten and another lawmaker, Rep. Mike Levin, recently released the coalition’s priority permitting reform package known as the Cheap Energy Act, which stands in stark contrast to many of the permitting ideas gaining Republican support in Congress today. I reached out to talk about the state of play on permitting, where renewables projects fit on Democrats’ priority list in bipartisan talks, and whether lawmakers will ever address the major barrier we talk about every week here in The Fight: local control. Our chat wound up immensely informative and this is maybe my favorite Q&A I’ve had the liberty to write so far in this newsletter’s history.

The following conversation was lightly edited for clarity.

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Spotlight

How to Build a Wind Farm in Trump’s America

A renewables project runs into trouble — and wins.

North Dakota and wind turbines.
Heatmap Illustration/Getty Images

It turns out that in order to get a wind farm approved in Trump’s America, you have to treat the project like a local election. One developer working in North Dakota showed the blueprint.

Earlier this year, we chronicled the Longspur wind project, a 200-megawatt project in North Dakota that would primarily feed energy west to Minnesota. In Morton County where it would be built, local zoning officials seemed prepared to reject the project – a significant turn given the region’s history of supporting wind energy development. Based on testimony at the zoning hearing about Longspur, it was clear this was because there’s already lots of turbines spinning in Morton County and there was a danger of oversaturation that could tip one of the few friendly places for wind power against its growth. Longspur is backed by Allete, a subsidiary of Minnesota Power, and is supposed to help the utility meet its decarbonization targets.

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