It’s a great moment to celebrate milestones at CFS — in more ways than one. Today we announced we’re done manufacturing one of our key magnets and putting it through a rigorous, month-long battery of performance tests — which it passed. 1/4 #PowerMoves

On Monday, we announced a power purchase agreement with Eni, one of the largest energy companies in the world, in a deal worth more than $1 billion. But how can we sign an agreement like that without yet having demonstrated a machine that actually produces fusion energy? 1/2 #FusionEnergy

The fusion startup has inked a deal with Italian energy company Eni. The move is likely intended to set a price for fusion power.

Less than three months after announcing our partnership to sell Google power from our first ARC fusion power plant, we now have a second customer: Eni, an integrated energy company based in Italy with operations in 60 countries. 1/4 #PowerMoves

Yesterday in Chesterfield County, our ARC fusion power plant moved one step closer to the grid as the Chesterfield County Board of Supervisors unanimously approved a conditional use permit for the project. Our planned site is now zoned for fusion energy generation. #FusionEnergy #Virginia 🧵1/4

When our CEO Bob Mumgaard says you can see the Chinese fusion program from space, this is what he’s talking about. The country is investing heavily — $6.5 billion over the last two years — to try to win the race to commercialize fusion power: the last source of energy humanity will need. 1/4

To help fusion energy observers get a better handle on our industry’s progress our CEO, Bob Mumgaard, is detailing the six steps every fusion company must take on the path to delivering power competitively. Today, he digs into the second step: get your fusion fuel hot enough. #FusionEnergy

Why work on our ARC fusion power plant when we haven't switched on our SPARC demonstration machine? It's a fair question. Our answer: at CFS, we've deliberately charted a path to fusion energy that lets us work in parallel on multiple projects. 🧵1/3 #FusionEnergy blog.cfs.energy/how-863m-in-...

FusionX Group's Stuart Allen: CFS is the "best financed private-sector fusion venture by a wide margin, and with the most diverse cap table, highlighting the extraordinary investor confidence CFS has built relative to many of its competitors." fusionxinvest.com/insight/9007... #FusionEnergy

Commonwealth Fusion Systems has raised nearly $900 million as it continues work on Sparc, its prototype fusion power plant. techcrunch.com/2025/08/28/n...

Commonwealth, which wants to build a fusion power plant, raised $863M from Nvidia's NVentures, Khosla Ventures, and Google, bringing its total raised to ~$3B (Will Wade/Bloomberg) Main Link | Techmeme Permalink

Today, Commonwealth Fusion Systems announced we’ve raised $863 million in a new funding round — the second largest investment of committed capital into a deep tech or clean tech company ever. And the largest was our $1.8 billion Series B round in 2021. www.youtube.com/watch?v=6bNW... #PowerMoves

Featuring an incredible lineup of speakers including @schatz.bsky.social and @cfs.energy's CCO Rick Needham.

Spun out of @mit.edu, @cfs.energy is the perfect example of the pioneering science we want to see more of in our state. Had the chance to tour their Devens facility yesterday. Commercial fusion: the next frontier for energy in Massachusetts⚡️

We were honored to host Massachusetts Gov. Maura Healey today at our commercial fusion energy campus in Devens, Massachusetts, where we talked about the state’s leadership on clean energy and the role CFS is playing to advance that leadership. #FusionEnergy 🧵1/4

At a recent conference, our CEO Bob Mumgaard explained how fusion energy is not only the densest power source there is, but also that it has the most abundant fuel. That's why it's also the last energy source that humanity will ever need. #FusionEnergy #Science

To keep our magnet factory humming, we sometimes rearrange work stations for speed and flexibility — like adding a second cryostat test stand to make sure our magnets are up to scratch. 1/3 #Magnets

"Energy unlocks prosperity for people, businesses, and nations. Whoever controls that energy commands an outsized impact on the world and on the future of everyone who lives on it." 1/3 #FusionEnergy

Time for a new 6-month update from CEO Bob Mumgaard about what we’re up to at Commonwealth Fusion Systems. Check our video for a lot of details. 🧵1/3 #FusionEnergy

"History doesn't repeat itself, but it rhymes... We talk about some of the technologies that the US founded — where we have been the inventor, we've done the innovation, we've done the hard work...Then we cede it to China. Fusion is the one thing where the future is yet to be determined." 1/4

The fifth annual @fusionindustry.bsky.social report released today shows an acceleration in fusion industry funding growth, increasing to a total of $9.8 billion. Notable trends in the report below. 1/4 #FusionEnergy

Scenes of progress from around our Devens, Massachusetts, campus. ⁣1/4

"Fusion is, I'm convinced, after more than fifty years covering it and writing about it, at hand," says @llewellynking.bsky.social, host of White House Chronicle. 1/3

'"This is about how we work together to really pull fusion energy, catalyze it all the way through the lab, where it's been demonstrated now, all the way into the market. Without being bold and setting a goal and going for it, you won't ever get over those challenges."' #FusionEnergy

"Google and Massachusetts-based [CFS] announced a deal Monday in which the tech company bought 200 megawatts of power from [their] first commercial fusion plant, the same amount of energy that could power roughly 200,000 average American homes." Read more @cnn.com #FusionEnergy

Looking forward to having Rick Needham, our Chief Commercial Officer, join @reuters.com's first fusion discussion on July 24 as part of their webinar, "The Future of Fusion: Driving Commercial Success."

Historic news for CFS: We’ve signed a landmark agreement with Google that dramatically advances our commercial fusion energy mission. This partnership involves power purchasing and a new corporate investment in CFS. 🧵1/4 blog.cfs.energy/google-deal-... #FusionEnergy #PowerMoves

Speakers at the @atlanticcouncil.bsky.social's Global Energy Forum last week clearly appreciated the role fusion energy can play in meeting rising electricity demand in the US and elsewhere in the world — clean, secure, affordable, 24x7 power with abundant fuel that can support economic growth.

It’s time for a fresh look inside the facility where we’re building SPARC, a machine called a tokamak we’re building to demonstrate fusion energy’s commercial viability. 1/3

“The state of fusion today is thrilling,” says @energygov.bsky.social Secretary Chris Wright. Chatting with @scsp.bsky.social CEO Ylli Bajraktari at AI+ Expo, Wright talked about going to college at ‪@mit.edu‬ “specifically to work on fusion energy.” He’s optimistic about its prospects now: 1/5

In the third video of this three-part series inside Tokamak Hall, CFS Chief Science Officer and Co-founder Brandon Sorbom shares a surprising detail about the cranes we use to handle SPARC's large components. Stay tuned for more episodes to come from around the CFS campus. #FusionEnergy #Science

CFS Chief Science Officer and Co-founder Brandon Sorbom offers a ground-level view of how we'll assemble the SPARC fusion machine inside Tokamak Hall. SPARC's cryostat base now is in place, and toroidal field (TF) magnets and a vacuum vessel are coming next. #FusionEnergy

CFS Chief Science Officer and Co-founder Brandon Sorbom gives a ground-level look at Tokamak Hall, the future home of our SPARC fusion machine, and its newly installed base. Catch the first of a three-part series based in Tokamak Hall with more to come around the CFS Campus. #fusionenergy

A thermos will keep your coffee warm most of the day, all day if it’s a good one. But, according to our CEO Bob Mumgaard, "If that worked as well as a fusion power plant insulates, it would still be warm years later." 1/3 #FusionEnergy

The @fusionindustry.bsky.social published its new Fusion Industry Supply Chain Report for 2025, and the good news is that the market for the products and services we need to deliver our fusion future continues to get bigger, reaching $434 million in 2024.

Energy Secretary Chris Wright has spoken several times about getting his first taste of fusion at @mit.edu, home to the Plasma Science and Fusion Center where CFS has its roots. 1/3

Thanks to MassLive’s @skirsner.bsky.social for spotlighting our CEO Bob Mumgaard in @masslive.bsky.social's list of 12 innovation leaders to watch in 2025. 1/3

SPARC is more than 60% complete. So far, most of that progress has taken place outside of the central hall that’s the future home of our star-of-the-show SPARC tokamak.

In an unassuming industrial park 30 miles outside Boston, engineers are building a futuristic machine to replicate the energy of the stars.

The goal for our fusion machine, SPARC, is to produce net energy — more power out than in. The power out is the part that makes the pursuit of fusion energy worth it. But the power in is also an essential part of the process. 1/3

For our first fusion energy machine, SPARC, we’ll have to perform a balancing act. "The heart of the machine must reach extremely high temperatures to drive the fusion process. But not far away from that, there’s a much cooler region...the more ordinary world of metals and magnets." 1/2

100 days into a new administration, it's good to see DOE advance commercial fusion energy. Helping the private sector tackle fusion energy's practical challenges, not just its underlying science, means the US can tap into fusion's economic and security benefits as soon as possible. #FusionEnergy

Dig into fusion energy with talks, tech, and a tour from our colleagues at the @mit.edu Plasma Science and Fusion Center next week. These online and in-person events are open to the public. Registration info: linktr.ee/mitpsfc?fbcl... #FusionEnergyWeek #FusionEnergy #PSFC

Those governments that actively support the commercial fusion industry will chart a prosperous path into the future. Fusion's advantages — clean, steady power generation, abundant fuel, and flexible siting — make it the last new energy source the planet needs. 1/3

"I think the science is beautiful. But the science doesn’t actually power the lights. If we build one [fusion power plant] we’ve utterly failed. You need thousands." 1/5

“Fusion energy can make the US energy surplus permanent.” That’s one conclusion the nonpartisan @cleanaircatf.bsky.social makes in a report this month on fusion energy and the economic benefits the US would get from accelerating its commercialization. 1/4

Think twice before you utter that old chestnut about fusion energy always being 30 years away: It’s an obsolete viewpoint, our CEO and Co-founder Bob Mumgaard said at The Economist’s #FusionFest conference today in London. 🧵1/3 #FusionEnergy

The magnet factory is one of the centers of action at our Devens campus, more like an auto factory than an R&D lab. That’s because our focus there is now squarely on building and shipping magnets for #SPARC, in particular our toroidal field (TF) and poloidal field (PF) magnets. 1/2

“If you look at the energy transition, that is the largest change in how humans organize themselves from an economic and industrial point of view — the energy transition will touch every single person's life because every single person uses energy,” says Bob Mumgaard, CEO and Co-founder of CFS. 1/2

Catch this week's #FusionNews episode➡️ @type-one.energy unveils design basis; @cfs.energy hits machine milestone; Marvel Fusion secures €113M; @focusedenergy.bsky.social announces plant site; @theaenergy.bsky.social hits milestone www.youtube.com/watch?v=4asy... creators.spotify.com/pod/profile/...