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Aepnus is taking a “fully circular approach” to battery manufacturing.
Every year, millions of tons of sodium sulfate waste are generated throughout the lithium-ion battery supply chain. And although the chemical compound seems relatively innocuous — it looks just like table salt and is not particularly toxic — the sheer amount that’s produced via mining, cathode production, and battery recycling is a problem. Dumping it in rivers or oceans would obviously be disruptive to ecosystems (although that’s generally what happens in China), and with landfills running short on space, there are fewer options there, as well.
That is where Aepnus Technology is attempting to come in. The startup emerged from stealth today with $8 million in seed funding led by Clean Energy Ventures and supported by a number of other cleantech investors, including Lowercarbon Capital and Voyager Ventures. The company uses a novel electrolysis process to convert sodium sulfate waste into sodium hydroxide and sulfuric acid, which are themselves essential chemicals for battery production.
“It's a fully circular approach,” Bilen Akuzum, Aepnus’ co-founder and CTO, told me. “Rather than in the current paradigm where companies are buying chemicals and having to deal with disposing of the waste, we can co-locate with them and they give us the waste, and we give them back the chemicals.” This recycling process, he says, can happen an indefinite number of times.
Akuzum told me that companies using Aepnus’ tech can “speed up their environmental permits because they're not going to be producing that waste anymore. Instead, they can just turn it into value.” In an ideal scenario, this could increase domestic production of critical minerals and battery components, which will decrease the U.S.’s reliance on China, a major goal of the Biden administration. On-site chemicals production will also help to decarbonize the supply chain, as it eliminates the need for these substances to be trucked into remote mining sites or out to battery manufacturing and recycling facilities.
To do the chemical recycling, Aepnus has developed an electrolysis system that it says is 50% more efficient than the processes normally used to produce sodium hydroxide, and is uniquely tailored to process sodium sulfate waste. Energy nerds might associate electrolysis with the pricey production of green hydrogen, but this has actually always been the process by which sodium hydroxide is made.
Making sulfuric acid, however, doesn’t traditionally involve electrolysis, but because sodium hydroxide is the more valuable of the two chemicals, combining their production via a single, more efficient electrochemical process gives Aepnus a much better chance at being cost competitive with other chemical producers than, say, the likelihood of green hydrogen being cost competitive with natural gas. Akuzum told me that the company’s electrolyzers can operate at lower voltages and higher temperatures than the industry standard, thereby increasing efficiency, and don’t require rare earth elements, thereby reducing costs.
Ultimately, Akuzum said that Aepnus aims to become an electrolyzer manufacturer rather than a chemicals producer. “We just want to be the technology provider and almost like application agnostic in a sense that this [the battery industry] is just the first market that we're going after,” Akuzum told me, citing a number of other potential markets such as textile and pigment manufacturing, which also produce sodium sulfate waste.
The company is currently working to get initial customers onboard for pilot demonstrations, which are planned to take place over the next 18 months. In the extended near term, Aepnus wants to expand its platform to produce a greater variety of chemicals. As the tech scales and is deployed across various industries, the company says it has potential to mitigate a total of 3 gigatons of greenhouse gas emissions between now and 2050, as calculated by Clean Energy Ventures’ Simple Emissions Reduction Calculator.
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A judge has lifted the administration’s stop-work order against Revolution Wind.
A federal court has lifted the Trump administration’s order to halt construction on the Revolution Wind farm off the coast of New England. The decision marks the renewables industry’s first major legal victory against a federal war on offshore wind.
The Interior Department ordered Orsted — the Danish company developing Revolution Wind — to halt construction of Revolution Wind on August 22, asserting in a one-page letter that it was “seeking to address concerns related to the protection of national security interests of the United States and prevention of interference with reasonable uses of the exclusive economic zone, the high seas, and the territorial seas.”
In a two-page ruling issued Monday, U.S. District Judge Royce Lamberth found that Orsted would presumably win its legal challenge against the stop work order, and that the company is “likely to suffer irreparable harm in the absence of an injunction,” which led him to lift the dictate from the Trump administration.
Orsted previously claimed in legal filings that delays from the stop work order could put the entire project in jeopardy by pushing its timeline beyond the terms of existing power purchase agreements, and that the company installing cable for the project only had a few months left to work on Revolution Wind before it had to move onto other client obligations through mid-2028. The company has also argued that the Trump administration is deliberately mischaracterizing discussions between the federal government and the company that took place before the project was fully approved.
It’s still unclear at this moment whether the Trump administration will appeal the decision. We’re still waiting on the outcome of a separate legal challenge brought by Democrat-controlled states against Trump’s anti-wind Day One executive order.
A new letter sent Friday asks for reams of documentation on developers’ compliance with the Bald and Golden Eagle Protection Act.
The Fish and Wildlife Service is sending letters to wind developers across the U.S. asking for volumes of records about eagle deaths, indicating an imminent crackdown on wind farms in the name of bird protection laws.
The Service on Friday sent developers a request for records related to their permits under the Bald and Golden Eagle Protection Act, which compels companies to obtain permission for “incidental take,” i.e. the documented disturbance of eagle species protected under the statute, whether said disturbance happens by accident or by happenstance due to the migration of the species. Developers who received the letter — a copy of which was reviewed by Heatmap — must provide a laundry list of documents to the Service within 30 days, including “information collected on each dead or injured eagle discovered.” The Service did not immediately respond to a request for comment.
These letters represent the rapid execution of an announcement made just a week ago by Interior Secretary Doug Burgum, who released a memo directing department staff to increase enforcement of the Bald and Golden Eagle Protection Act “to ensure that our national bird is not sacrificed for unreliable wind facilities.” The memo stated that all permitted wind facilities would receive records requests related to the eagle law by August 11 — so, based on what we’ve now seen and confirmed, they’re definitely doing that.
There’s cause for wind developers, renewables advocates, and climate activists to be alarmed here given the expanding horizon of enforcement of wildlife statutes, which have become a weapon for the administration against zero-carbon energy generation.
The August 4 memo directed the Service to refer “violations” of the Bald and Golden Eagle Protection Act to the agency solicitor’s office, with potential further referral to the Justice Department for criminal or civil charges. Violating this particular law can result in a fine of at least $100,000 per infraction, a year in prison, or both, and penalties increase if a company, organization, or individual breaks the law more than once. It’s worth noting at this point that according to FWS’s data, oil pits historically kill far more birds per year than wind turbines.
In a statement to Heatmap News, the American Clean Power Association defended the existing federal framework around protecting eagles from wind turbines, noted the nation’s bald eagle population has risen significantly overall in the past two decades, and claimed golden eagle populations are “stable, at the same time wind energy has been growing.”
“This is clear evidence that strong protections and reasonable permitting rules work. Wind and eagles are successfully co-existing,” ACP spokesperson Jason Ryan said.
The $7 billion program had been the only part of the Greenhouse Gas Reduction Fund not targeted for elimination by the Trump administration.
The Environmental Protection Agency plans to cancel grants awarded from the $7 billion Solar for All program, the final surviving grants from the Greenhouse Gas Reduction Fund, by the end of this week, The New York Times is reporting. Two sources also told the same to Heatmap.
Solar for All awarded funds to 60 nonprofits, tribes, state energy offices, and municipalities to deliver the benefits of solar energy — namely, utility bill savings — to low-income communities. Some of the programs are focused on rooftop solar, while others are building community solar, which enable residents that don’t own their homes to access cheaper power.
The EPA is drafting termination letters to all 60 grantees, the Times reported. An EPA spokesperson equivocated in response to emailed questions from Heatmap about the fate of the program. “With the passage of the One Big Beautiful Bill, EPA is working to ensure Congressional intent is fully implemented in accordance with the law,” the person said.
Although Solar for All was one of the programs affected by the Trump administration’s initial freeze on Inflation Reduction Act funding, EPA had resumed processing payments for recipients after a federal judge placed an injunction on the pause. But in mid-March, the EPA Office of the Inspector General announced its intent to audit Solar for All. The results of that audit have not yet been published.
The Solar for All grants are a subset of the $27 billion Greenhouse Gas Reduction Fund, most of which had been designated to set up a series of green lending programs. In March, Administrator Lee Zeldin accused the program of fraud, waste, and abuse — the so-called “gold bar” scandal — and attempted to claw back all $20 billion. Recipients of that funding are fighting the termination in an ongoing court case.
State attorneys generals are likely to challenge the Solar for All terminations in court, should they go through, a source familiar with the state programs told me.
All $7 billion under the program has been obligated to grantees, but the money is not yet fully out the door, as recipients must request reimbursements from the EPA as they spend down their grants. Very little has been spent so far, as many grantees opted to use the first year of the five-year program as a planning period.