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Q&A

How Data Center Developers Are Navigating the Battery Fire Freakout

A conversation with Spencer Hanes of EnerVenue

Spencer.
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Today’s conversation is with Spencer Hanes, vice president of international business development for long-duration battery firm EnerVenue and a veteran in clean energy infrastructure development. I reached out to Hanes for two reasons: One, I wanted to gab about solutions, for once, and also because he expressed an interest in discussing how data center companies are approaching the media-driven battery safety panic sweeping renewable energy development. EnerVenue doesn’t use lithium-ion batteries – it uses metal-hydrogen, which Hanes told me may have a much lower risk of thermal runaway (a.k.a. unstoppable fire).

I really appreciated our conversation because, well, it left me feeling like battery alternatives might become an easy way for folks to dodge the fire freakout permeating headlines and local government hearing rooms.

This conversation has been lightly edited for clarity.

From a developer’s perspective, if you’re working in utility-scale battery development, why ditch lithium-ion batteries?

My first battery project was at Duke Energy in 2010. It was a lead-acid battery project in Texas. It was the first time we’d incorporated batteries into a renewables project, and it was probably the biggest in the northern hemisphere. Now I don’t even think it is the biggest in Texas, but it was a big step forward.

What developers are finding is that lithium batteries don’t last as long as the developers would like them to. That means they’ve got a shelf life of 7,000 cycles, maybe 8,000 cycles, and it depends on how you use them – lithium ion batteries have to perform under the perfect environment or they can be damaged. Our batteries, on the other hand, are incredibly flexible, and we have a much more robust product that we think is safer and longer lasting than lithium – which has its place, but there are more and more safety issues around it. [There’s] virtually no risk of thermal runaway with our battery.

So I recently had a lithium-ion battery explode on me for the first time – it sparked up and fused to an electrical cable. It was very surprising, and as someone who writes about this stuff a lot, it still took me aback. As someone who is interacting with folks in data center development spaces, seeking battery storage for their operations, how are they digesting the anxieties around battery failures?

Well, the good news is that the data center developers are just trying to get electrons where they can find them. It's hard to find any sort of generation resource right now. Solar and batteries are just the easiest to find.

The safety piece is always going to be top of mind, though. They’re going to build redundancies into their battery projects, wall them off and containerize different batteries so if there’s a spark it doesn’t propagate.

Because data centers need electrons quickly right now, these companies are immune to the battery safety anxieties percolating in the public right now?

Yeah. They’ve been using them for a long time, they’re familiar with them. But the data centers and the big power users are sometimes stressing the lithium-ion batteries in ways they can no longer handle.

Do you feel like data center companies, big power users, do they get the inherent risks from a social license perspective and a siting perspective in using big lithium-ion batteries?

I think a lot of battery projects are being developed in containers because of fire issues, so if there is an issue it’s contained, and that’s a best practice right now.

What would be better is if there was a zero risk of thermal runaway. I think there’s a growing need for other technologies to come along that are safer and more utility-grade, able to serve multiple purposes. But the data center companies are very smart about how they’re developing, and they’re not going to do it in a way that creates problems for other parts of the data center.

Are there ways to avoid building out a lot of batteries? Maybe minimizing how many batteries are used on site, or how much infrastructure needs to be put on site to minimize fire risk?

I think unfortunately it's largely a case by case determination in where you are. I’m running across more and more engineering firms that aren’t comfortable with even the safest batteries being inside a building. Now, everyone wants them containerized because a thermal runaway event is a catastrophic risk no one wants to take.

EnerVenue has a product that fits that profile. There are many others that fit that profile, as well. We need many more options of technologies that can fit the bill. Lithium has a really important role in our society, doing well enough in phones and laptops, but we think we have a competitive offering for grid scale energy storage.

From your vantage point, do you see data center development as the growth area for storage in the U.S. right now?

A year ago I’d get a call once a quarter, and now I’m fielding calls every month. It's because there’s such a crunch on generation. If you put a battery with a data center … everybody wants to say the centers are operating 99.9% of the time, but they’re also not operating at 100% capacity all day, so if they can generate electricity and store it in a battery to use when rates are cheaper or when there’s a constraint on the grid, that’s a benefit to them.

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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.
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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.
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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.
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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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