You’re out of free articles.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:
The New York-based startup aims to create a market for clean energy tax credits.

One of the least-noticed changes in the Inflation Reduction Act may be one of the most important.
For years, the government has encouraged developers, power utilities, and other companies to build clean energy by offering tax credits. But those tax credits were difficult to transfer to other companies, meaning that complicated financial instruments had to be created to allow them to share in the wealth.
The IRA continues to employ tax credits. But for the first time, it allows companies to buy and sell tax credits to each other.
A new crop of startups have appeared to help companies trade these new “transferable” tax credits. One of the largest is Crux, a New York-based startup backed by Andreessen Horowitz and Lowercarbon Capital.
On Tuesday, Crux announced that it has now brought some of the country’s largest energy developers into its fold. Clearway Energy, Intersect Power, Pattern Energy, and Électricité de France (commonly known as EDF) have all made strategic investments in Crux, the company announced. It had not previously disclosed their involvement in January’s $18.2 million Series A round.
“We had an opportunity to bring in some of the leading developers who collectively represent a pipeline of more than 100 gigawatts of power,” Alfred Johnson, Crux’s CEO, told me.
Crux has now raised more than $27 million in capital since its founding early last year. The offshore wind developer Orsted, as well as the energy developers LS Power and Hartree, have previously joined as strategic investors.
Under the Inflation Reduction Act, as in the past, companies can claim money on their taxes by building zero-carbon electricity generation, new factories, buying electric vehicles, and more.
But energy developers and utilities rarely need to use all the tax credits that they generate from their projects. A $30 million solar farm might generate as much as $10 million of tax credits, for instance — far too much for most companies to use in a reasonable amount of time.
That meant that developers had to bring in a third-party firm — usually a bank or another financial institution — that could pay for the privilege of using those tax credits. Before the IRA passed, many clean energy projects were therefore structured as complicated “tax equity” deals, where the bank or tax credit “buyer” owned part of the project so that it could claim its tax credits. About $20 billion in tax equity deals happened last year, according to research from the law firm Norton Rose Fulbright.
The IRA aimed to make that process easier by, in essence, creating a market for tax credits.
Crux estimates that $7 to $9 billion of these new “transferrable tax credits” were sold in that new market last year. It believes that the opportunity will grow rapidly. The advisory firm Evercore has projected that the transferrable tax credit market could exceed $100 billion by 2030.
Crux is not the only company that hopes to capitalize on that burgeoning market, potentially speeding the energy transition at the same time. Basis Climate, another New York-based startup, is also trying to serve as a key platform in the space.
Ilmi Granoff is an expert on climate finance, a senior fellow at the Sabin Center for Climate Law, and an advisor to Basis Climate. “The market is going to be diverse and large enough to support a number of pure play platforms that are specialists in this — and you’re going to have the banks moving in, consultancies, the tax advisors, and more,” Granoff told me. “For those looking for an environmental commodities market that really drives climate change, you can stop looking at the voluntary carbon market and just monetize the tax credit market for carbon solutions. It is going to be a very reliable market, backed by the government.”
Johnson, the Crux chief executive, also pointed to the scale of climate-related investment on the horizon. “We just have to build so much in the next 10 years. The level of infrastructure investments that have happened up to this point — and the scale of what will be built — is really, really dramatic,” Johnson said.
Crux’s product is a standardized platform where developers, utilities, and manufacturing companies can describe and sell their tax credits to buyers.
When a buyer first uses Crux, all tax credits available on the service are presented anonymously. They can then anonymously contact a specific seller. The buyer and seller can gradually reveal information to each other throughout the ensuing negotiation, culminating in a Crux-hosted “data room” where each teams’ accountants and lawyers can trade and view documents relevant to the sale.
“This is not a point and click transaction,” Johnson told me. “These are still complicated transactions with lots of moving pieces, with many underlying documents and lots of stakeholders at the table.” The goal of Crux, he said, is to make these transactions “efficient and standardized.”
The company says it’s already having some success speeding up the average sale. It recently facilitated a deal between an electricity utility, which was selling tax credits, and a Fortune 100 company, which was buying them, in just 22 days, Johnson told me. By contrast, a traditional tax equity deal would take six to nine months to structure and close, he said.
Many of the company’s leaders once helped shape high-level Democratic policy. Johnson, a former White House aide under President Barack Obama, was deputy chief of staff to Treasury Secretary Janet Yellen until 2022. He and Crux’s cofounder, Allen Kramer, previously cofounded the startup Mobilize, which helped organizations manage and recruit volunteers.
William Daley, a former Obama White House chief of staff and Commerce Secretary under President Bill Clinton, joined Crux as a senior advisor last week.
In an interview, Daley told me that — with the defense industry excepted — he could not remember the government investing in a strategic industry the way it is now investing in clean energy. “These are economic decisions that investors are making — they’re not just going out there and doing things that may or may not be financially rewarding,” he told me. “For every dollar the government puts forward in a subsidy or credit, the private sector is investing $5.”
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
The spinoff of Lawrence Livermore National Lab has a new 10-point plan to get onto the grid by the 2030s.
One of fusion energy’s newest startups, Inertia Enterprises, is betting that the fastest route to commercial fusion runs through one of the field’s oldest ideas. The company, which raised a $450 million Series A earlier this year, plans to build a power plant based on the laser-driven fusion system pioneered at Lawrence Livermore National Laboratory’s — the only tech yet to have produced more energy from a fusion reaction than it took to initiate it. Now, Inertia has shared its commercialization roadmap exclusively with Heatmap, detailing the 10 near-term capabilities it must demonstrate before this landmark experiment can become a grid-scale power plant by the mid-2030s.
The roadmap offers a route from the national lab’s impressive but commercially impractical fusion demonstrations to an economical power plant capable of producing electricity for the grid. At its core are a set of milestones — mostly aimed at developing cheap, mass-manufacturable components — that Inertia says it must clear before those individual systems can be integrated into a working plant. This road is not necessarily linear, however, as various teams will likely be working on many of these goals simultaneously.
At least the physics of Inertia’s approach are already proven, the startup’s CEO Jeff Lawson told me, pointing to the fusion experiments at Lawrence Livermore’s National Ignition Facility as a proof-of-concept. The lab’s demonstration of net energy gain caps more than six decades and $30 billion (in 2026 dollars) of U.S. fusion research. The remaining challenges, he argued, are all engineering-related, requiring “elbow grease, hard work, and smart people” rather than breakthroughs in fusion science.
"It seems to us like a startup or a commercial company of any variety should be focused on commercializing a proven scientific result, as opposed to actually trying to demonstrate the basic science to begin with," Lawson told me. Basic science, he argues, is better left to national labs and universities, where researchers can pursue "unbounded problems" that don’t align with the expectations and timelines of venture-backed startups.
Indeed, no fusion startup has yet achieved scientific breakeven, the milestone Lawrence Livermore first hit in 2022, and has since repeated numerous times. But leading players such as Commonwealth Fusion Systems and Helion Energy maintain that it’s only a matter of time before they validate the physics behind their own reactor designs, which they claim will be highly cost-competitive.
Lawson, on the other hand, readily acknowledged that Lawrence Livermore’s tech is uneconomical in its current form. His bet is simply that the more predictable path to a commercial reactor is to drive down the cost of the lab’s validated fusion approach, known as inertial confinement. This system relies on high-powered lasers firing at a millimeter-scale pellet of fusion fuel, compressing it to extreme temperatures and pressures until the atoms fuse. Today, the National Ignition Facility makes each individual fusion target by hand, a workable solution given that it only uses about a dozen per year.
That production model, however, isn’t remotely plausible for a grid-scale power plant. Because each fusion reaction lasts just a fraction of a billionth of a second, a commercial facility must fire its lasers at a fresh target about 10 times per second to generate continuous electricity — requiring the production of hundreds of millions of targets each year.
Scaling production to roughly a million pellets per day and making them inexpensive enough for commercial operation without compromising the strength or precision required for fusion ignition is central to Inertia’s roadmap. That includes goals five, seven, eight and nine — industrializing the manufacturing of the carbon shells that hold the fusion fuel, making the thin films that hold those carbon shells both durable and cheap, scaling up and automating fusion target assembly, and speeding up how fast targets are filled with the requisite deuterium-tritium fuel.
The other central focus of the roadmap is the laser system, which will ultimately consist of 1,000 individual units operating in concert to compress and heat the fusion fuel. Key priorities include reducing the system’s cost (goal two), dramatically increasing its firing cadence (goal three), and bolstering its durability to withstand high-intensity operations (goal four). Goal six also complements these efforts, calling for the development of a control system capable of tracking moving fusion targets to precisely align each laser shot.
Goals one and 10 bookend the journey with some broader milestones. The first focuses on increasing the fusion target’s energy gain — the ratio of fusion energy produced to laser energy delivered — to more than 25 times ignition. Today, the National Ignition Facility’s best-performing laser shot has yielded a gain of just over four times what it took to start the reaction. Goal 10 then zooms out to the ultimate objective: integrating all these technologies into a commercially viable power plant that can deliver either electricity or industrial heat to end customers.
To reach that point, Inertia has embarked on an industrial engineering hiring spree, recruiting folks with experience taking complex hardware systems from prototype to mass production, “not unlike the processes that are used in the semiconductor or consumer electronics world,” Lawson explained. The company has been making progress on its component development goals since the beginning of the year, he told me, and expects to announce the successful demonstration of a few of these milestones in the coming months. Lawson ultimately expects Inertia to complete the core components of its laser and target manufacturing systems by the middle of next year.
The team will spend the next two to three years integrating these individual pieces into two fully operational subsystems, a prototype laser system and a target manufacturing line. Around 2030, the company will begin combining those subsystems into a first-of-a-kind fusion power plant, which will also serve as the proving ground for the target chamber, tritium fuel breeding system, and power conversion system that turns fusion heat into electricity. By the middle of the next decade, Inertia aims to be generating power from this first plant, setting the stage for the company to build and connect additional grid-scale commercial power plants.
There are plenty of engineering trade-offs that the company will have to solve for. Take the decision around how to size the target chamber, for example. “If you make it bigger, your walls have an easier time and survive longer, but it’s more expensive. If you make it smaller, your walls have a tougher time because they’re closer to all the heat and energy that the fusion reaction is creating, but now your power plant costs less to build.”
But to Lawson, this represents exactly the type of problem Inertia was built to solve: complex engineering issues that come to the fore once scientists have demonstrated the fundamental physics are sound. He thinks other fusion companies may someday reach this stage, as well — though he’s unwilling to hazard a guess on exactly what approach or startup is best positioned to do so.
“There have been generations of scientists who’ve made their predictions about fusion energy and gotten it wrong,” he told me. “I’m not going to pretend to be smarter than them. All I’m here to say is, just knowing that one did work, we can commercialize it.”