In a surprising turn that has captivated the luxury yachting world and environmental enthusiasts alike, Microsoft co-founder Bill Gates has listed his custom-built superyacht, the “Breakthrough,” for a staggering $645 million. Announced on August 1, 2025, through the prestigious yacht brokerage Edmiston, the 127-meter vessel—widely regarded as the pinnacle of eco-innovation—represents a bold fusion of cutting-edge technology and opulent design. Yet, in a twist that has fueled endless speculation, Gates reportedly never took delivery of the yacht, nor has he ever set foot aboard. As the world’s first hydrogen-powered superyacht, “Breakthrough” stands as a testament to Gates’ longstanding commitment to sustainability, but his decision to sell without using it raises intriguing questions about the billionaire’s priorities in an era of climate urgency.
The news broke during a high-profile preview event hosted by Edmiston in Monaco, ahead of the yacht’s debut at the Monaco Yacht Show in September 2025. Jamie Edmiston, CEO of the brokerage firm, described the vessel as “the most extraordinary yacht ever built—the one that will change it all.” Built over five years by the renowned Dutch shipyard Feadship, “Breakthrough” (previously known as Project 821) was commissioned in 2020 amid Gates’ growing involvement in clean energy initiatives. At 127 meters (approximately 417 feet) in length, it eclipses many of its peers in both size and ambition, boasting a gross tonnage of 7,247 GT and the capacity to host 30 guests in 15 luxurious cabins, supported by a crew of 43.
What sets “Breakthrough” apart is its revolutionary propulsion system: the world’s first fully hydrogen fuel-cell-powered superyacht. Designed to operate on green hydrogen stored in cryogenic tanks at an ultra-low temperature of -253 degrees Celsius (-423 degrees Fahrenheit), the yacht can cruise emission-free at 10 knots for extended periods, with a range that allows for silent, zero-emission anchoring for up to a week. This innovative setup recycles waste heat to warm the pools, steam rooms, and even guest room floors, minimizing energy loss. For longer voyages or when hydrogen refueling isn’t available, a secondary biofuel system kicks in, reducing overall emissions by up to 90% compared to traditional diesel yachts. Feadship director Jan-Bart Verkuyl highlighted the technology’s potential, stating, “Fuel cells will play an important role for yachts in the years to come, offering superior efficiency, low particle emissions, and minimal noise.”
The yacht’s engineering marvels extend beyond its eco-credentials. Its power plant required an oversized engine room—double the space of conventional systems—reflecting a “bold, uncompromising choice” to prioritize environmental impact over traditional layouts. Industry expert Heigo Paartalu, CEO of YachtWay, emphasized the precision involved: “Building a hydrogen-powered yacht demands extreme care; any leak could be catastrophic.” This focus on safety and sustainability aligns seamlessly with Gates’ philanthropic efforts through Breakthrough Energy, his venture fund dedicated to accelerating clean technologies to combat climate change. Launched in 2015, the fund has invested billions in everything from renewable energy startups to advanced nuclear reactors, making “Breakthrough” a floating embodiment of Gates’ vision for a net-zero future.
Aesthetically and functionally, “Breakthrough” redefines luxury on the high seas. Designed by the British firm RWD, the exterior features sleek lines and expansive glass panels that flood the interior with natural light. The yacht boasts the most hull openings of any Feadship build, including 14 slide-out balconies, five shell doors, and seven opening platforms, all operable at the touch of a button. These elements create seamless indoor-outdoor transitions, enhancing the sense of freedom and connection to the ocean. Inside, the decor evokes a high-end coastal resort, with materials like limed oak, rattan, marble, and supple leathers crafting a serene, elegant atmosphere.
The owner’s quarters are a highlight, spanning four private floors in what’s been dubbed a “townhouse-by-the-sea.” This exclusive section includes two bedrooms, twin bathrooms, dressing rooms, two offices with fireplaces, a gym, a pantry, and a living room—offering unparalleled privacy and comfort. Guests aren’t shortchanged either: amenities include a beach club-style infinity pool, multiple hot tubs, a full-size basketball court, a cinema, libraries on various decks, a steam room, and even a private hospital equipped for medical emergencies. A games niche, coffee corners, and a private dining room with its own sea terrace add to the allure, making “Breakthrough” not just a mode of transport but a self-contained floating paradise.
Powered by triple MTU engines for backup propulsion, the yacht achieves a cruising speed of 14 knots and a top speed of 17 knots, ensuring it can traverse oceans with grace. Its energy storage capacity of 543 kWh supports the hydrogen system’s efficiency, allowing for eco-friendly operations without sacrificing performance. Brad Hall, CEO of Yachtlify, called it “a modern engineering marvel, period,” underscoring its role as a benchmark for future yacht innovation.
Gates’ connection to “Breakthrough” dates back to rumors in 2020, when reports surfaced of him commissioning a hydrogen-powered vessel amid his divorce from Melinda Gates and a renewed focus on philanthropy. At the time, Gates was already a vocal advocate for sustainable living, having pledged billions to climate causes and even authoring books like “How to Avoid a Climate Disaster.” The yacht’s name itself nods to his Breakthrough Energy initiative, symbolizing a leap forward in green maritime technology. However, despite the vessel’s completion and successful sea trials near IJmuiden, Amsterdam, in late 2024, Gates reportedly backed out of taking delivery. Insiders speculate that his decision stems from a desire to streamline his assets post-divorce or perhaps a philosophical shift toward even greater minimalism—Gates has long been known for his relatively modest lifestyle compared to other billionaires, preferring books and burgers over ostentatious displays.
The listing comes at a time when the superyacht market is booming, with demand for eco-friendly vessels surging among the ultra-wealthy. “Time is priceless at this level,” Paartalu noted, explaining that buyers often prefer ready-made yachts over waiting years for custom builds. “Breakthrough” is positioned as a turnkey solution for those seeking innovation without delay, and its Gates pedigree adds cachet: “How often can someone say, ‘I bought Bill Gates’ yacht?’” Rumors swirl about potential buyers, including Canadian billionaire Patrick Dovigi, but Edmiston has kept details under wraps, teasing only that the yacht will “make waves” at the Monaco show.
This move isn’t Gates’ first brush with yachting controversy. In 2019, he faced backlash over rumors of purchasing the $600 million hydrogen-powered “Aqua,” which he denied, stating he wasn’t into superyachts. “Breakthrough” seems to contradict that, yet his non-use suggests a detachment from the luxury it represents. Perhaps it’s a strategic divestment; Gates’ net worth, hovering around $130 billion in 2025, allows him to fund grander pursuits, like his ongoing work in global health through the Bill & Melinda Gates Foundation or investments in carbon capture technologies.
The sale of “Breakthrough” has broader implications for the yachting industry and environmental advocacy. As climate concerns mount—with 2025 marking another record year for global temperatures—the vessel challenges the sector’s carbon-heavy reputation. Traditional superyachts guzzle diesel, emitting thousands of tons of CO2 annually, but “Breakthrough” paves the way for greener alternatives. Feadship’s commitment to net-zero yachts by 2030 gains credibility from this project, potentially inspiring rivals like Lürssen or Benetti to follow suit.
Social media has exploded with reactions, from admiration for Gates’ eco-focus to jokes about billionaire quirks. One viral tweet quipped, “Bill Gates builds a $645M yacht, never uses it, sells it—classic tech bro energy.” Environmental groups like Greenpeace have praised the innovation, urging more billionaires to invest in sustainable tech. Meanwhile, yacht enthusiasts speculate on customizations for the new owner, perhaps integrating AI or advanced solar panels.
As “Breakthrough” prepares for its Monaco debut, it symbolizes more than luxury—it’s a floating manifesto for a sustainable future. Gates’ decision to sell without sailing may seem eccentric, but it underscores his pragmatic approach: innovate, demonstrate feasibility, and move on to the next breakthrough. Whether the buyer is a tech mogul, a Hollywood star, or an eco-conscious tycoon, one thing is certain: this yacht isn’t just for sale; it’s a statement on what’s possible when wealth meets vision. In a world racing against climate change, “Breakthrough” might just be the vessel that steers us toward cleaner horizons.
