Sign In or Create an Account.

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

Climate Tech

Funding Friday: Fleetzero, Fervo, and a Fusion SPAC

It was a big week for geothermal.

A Fleetzero boat.
Heatmap Illustration/Getty Images, Fleetzero

Practically every week brings a flood of climate tech funding news and announcements — startups raising a new round, a venture capital firm closing a fresh fund, and big projects hitting (and missing) milestones. Going forward, I’ll close out each week with a roundup of some of the biggest stories that I didn’t get a chance to cover in full.

This week, we’ve got money for electric ships, next-gen geothermal, and residential electrification in Europe. Yay!

Fleetzero Raises $43 Million Series A to Electrify Shipping

Many say battery-powered cargo ships will never make sense — that batteries are too heavy, too bulky, and would take up too much valuable space. Fleetzero says it can make it work. Last Friday, the electric shipping startup raised a $43 million Series A round led by Obvious Ventures, with participation from other firms including Maersk Growth, the shipping giant’s corporate venture arm, and Breakthrough Energy Ventures. The funding will support production of the company’s hybrid and electric propulsion systems, as well as new manufacturing and R&D operations in Houston.

Ships’ bunker fuel is extremely polluting. It accounts for roughly 3% of global CO2 emissions and dirties the air with other pollutants such as sulfur and nitrogen oxides. Most players in the shipping decarbonization space want to shift to liquid fuels such as e-ammonia or e-methanol — a move that would require mulit-million-dollar engine overhauls and retrofits. Fleetzero says that battery electrification will prove to be cheaper and simpler. The company is building batteries large enough to hybridize — and potentially one day fully electrify — large container ships.

As Fleetzero’s CEO and co-founder Steven Henderson told my colleague Robinson Meyer on a 2024 episode of Heatmap’s Shift Key podcast, batteries are a relatively simple maritime decarbonization solution because “you can use existing infrastructure and build on it. You don’t need a new fundamental technology to do this.” And while the company has yet to provide any cost estimates for electrifying commercial shipping, as Henderson put it, “the numbers to do this are not outside the realm of possibility.”

Geothermal Company Sage Geosystems closes $97 million Series B

The next-generation geothermal startup Sage Geosystems announced on Wednesday that it raised a $97 million Series B round, co-led by the renewable energy company Ormat Technologies and the growth equity firm Carbon Direct Capital. This came atop a hot week for geothermal overall. As I wrote already, the artificial intelligence-powered geothermal developer Zanskar announced a $115 million Series C round for its pursuit of AI-driven conventional geothermal, while Axios reported that the geothermal unicorn Fervo Energy has filed for an IPO.

Like Fervo, Sage uses drilling technology adapted from the oil and gas industry to create its own artificial reservoirs in hot, dry rock. The startup then pumps these fractures full of water, where it absorbs heat from the surrounding rocks before being brought to the surface as steam that’s used to generate electricity. Sage’s CEO, Cindy Taff — a former Shell executive — told Bloomberg that this latest investment will accelerate the company’s project timeline by a full year or two, allowing it to put power on Nevada’s grid sometime in 2027.

This latest funding follows Sage’s strategic partnership with Ormat, announced last year, and could help the startup make good on its agreement with Meta to deliver up to 150 megawatts of clean electricity for the tech giant’s data centers starting in 2027.

Cloover Raises $1.2 Billion For European Home Electrification

Berlin-based startup Cloover — which helps Europeans finance home electrification upgrades — announced a $22 million Series A round on Wednesday, alongside a $1.2 billion debt facility from an unnamed “leading European bank” that it can draw on. The company, which describes itself as both the “operating system for energy independence” and the “Shopify of Energy,” aims to help homeowners ditch fossil fuels by facilitating loans to cover the upfront cost of, say, buying and installing heat pumps, rooftop solar, or home batteries — something traditional banks struggle to finance.

Cloover’s fintech platform allows home energy installers to manage complex projects while offering loans for green upgrades to customers at the point of sale. The software’s AI-driven credit underwriting evaluates not just a customer’s credit score, but also the projected energy savings and performance of the upgrade itself, helping align the price and terms of borrowing with the anticipated economic value of the asset.

Forbes reports that Cloover has already financed roughly 2,500 home energy installations. The company says it’s profitable, generating nearly $100 million in sales last year. With this new funding, the startup plans to expand across Europe and is projecting $500 million in sales this year, anticipating an explosion in demand for distributed energy resources.

Plus: Embattled Nuclear Veteran General Fusion To Go Public Via SPAC

One of the oldest players in the race to commercialize fusion energy, General Fusion, has been candid about its recent funding struggles, laying off 25% of its staff last spring while publicly pleading for more cash. This Thursday, it announced a lifeline: a SPAC merger that will provide the company with up to $335 million, if all goes according to plan. Read more about the deal in our Heatmap AM newsletter.

Green

You’re out of free articles.

Subscribe today to experience Heatmap’s expert analysis 
of climate change, clean energy, and sustainability.
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
Climate Tech

Funding Friday: Of Stellarators and SPACs

On Thea Energy’s $100 million Series B, plus more of the week’s big money moves.

Thea Energy.
Heatmap Illustration/Getty Images, Thea Energy

Nuclear is once again a dominant theme this week, with fusion startup Thea Energy landing a $100 million Series B that will help it expand its magnet manufacturing capabilities. While $100 million is nothing to scoff at, it somehow sounds modest alongside some of this year’s other deals, which include a $450 million Series A for Inertia Enterprises and $240 million for Shine Technologies. This week also brought the news that small modular reactor startup Newcleo plans to go public via SPAC later this year, bringing to mind the exuberance of the 2021 SPAC boom, in a deal expected to net a cool $429 million.

Elsewhere, gridtech company Utilidata raised fresh capital after (surprise!) pivoting to the data center market, while a standalone battery storage developer and operator is betting there’s still plenty of money to be made in the increasingly crowded ERCOT market.

Keep reading...Show less
Green
Spotlight

Democrats’ Growing Divide Over Data Centers

It’s pause vs pause-nots.

Data center protests.
Heatmap Illustration/Getty Images

The American climate movement is beginning to look a lot like AI doomers versus the techno-optimists. It’s a dynamic that is winning local bans – and very little else for now.

On one side, you’ve got the left-leaning insurgent grassroots movement against data centers. In many cases this push is in the name of climate action and environmental justice, with activists citing the risks of pollution from gas-fired power and the potential for strain on existing electricity supplies. But in many, many other cases, this movement is decidedly not about climate action; instead it’s a movement addressing everything from energy prices and power over large corporations to AI use generally.

Keep reading...Show less
Yellow
Hotspots

Local Police Targeted Data Center Opponent, Law Firm Alleges

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

The United States.
Heatmap Illustration/Getty Images

1. Jefferson County, Alabama – A law firm is alleging that police in the city of Birmingham retaliated against a woman for suing developers of a data center. It might just be a wake-up call for data center developers.

  • Earlier this month, two individuals each with homes next to a proposed 300-megawatt data center in Birmingham filed a class action lawsuit against developer Nebius and the city of Birmingham. The lawsuit alleges “multiple independently fatal zoning violations” rooted in the city’s decision to let Nebius’s project move forward while also finalizing a moratorium, and claims the city has granted approvals in violation of the existing moratorium.
  • On May 18, days after the lawsuit was filed, lawyers for one of the individuals – Madelyn Greene – wrote the Birmingham Police Department stating officers pulled her over while driving through the proposed project site without any lawful reason. According to the letter, which I obtained and was first reported by AL.com, the officers claimed she was harassing police and started filming her while in her car. When she took her own phone out, the officers “abruptly broke off contact, returned to their vehicles, and left the scene.”
  • The letter concludes the traffic stop “timing and location are not coincidental.” It warned that any additional attempts by city police to “stop, detain, surveil, follow, photograph, intimidate, or otherwise harass” people involved in the lawsuit will result in requests for restraining orders.
  • Situations like these vividly illustrate the problems around security forces and large infrastructure projects. Activists fighting the Thacker Pass lithium mine in Nevada were monitored for years. Conflicts between police and oil pipeline protestors are common and complaints about surveillance abound.
  • I feel compelled to say that data center developers and large tech firms would be wise to coordinate with local police on matters such as these – not just for their own benefit but for that of the public. It’s one thing when protesters are arrested at a hearing, but wholly another when members of the public are concerned voicing dissent will lead to retaliation. All that’ll do is aggravate the opposition further.
  • Nebius did not respond to a request for comment.

2. Mason County, Kentucky – This county is the site of yet another eminent domain debacle and I suggest you pay attention to it because it’s now represented by an outgoing congressman with nothing left to lose: Thomas Massie.

Keep reading...Show less
Yellow