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Sustainability Times | 06.17.2025

“Bury Them Deep”: Nuclear Reactors Planted One Kilometer Underground Could Deliver Cheap and Ultra-Safe Energy for Decades

Deep Fission, an American startup, has unveiled a groundbreaking approach to nuclear energy by proposing the installation of miniature reactors at the bottom of deep boreholes, promising a safer and more cost-effective power solution.

Rullion Reflections | 06.12.2025

Nuclear Waste Solved in Weeks, Not Decades? Liz Muller Explains

In this episode of Rullion Reflections, we sit down with Liz Muller, CEO and co-founder of Deep Fission, to explore how bold thinking and new technology are transforming one of nuclear energy’s biggest challenges: waste disposal.

Pulse 2.0 | 06.11.2025

Interview With Founder & CEO Elizabeth Muller About The Nuclear Power Company

Deep Fission is a company that is reimagining nuclear power with a bold new approach: placing small modular reactors (SMRs) a mile underground for cheaper, faster, and more scalable deployment. Pulse 2.0 interviewed Deep Fission founder and CEO Elizabeth Muller to learn more about the company.

Fox Business | 06.04.2025

Liz Muller talks with Maria Bartiromo

Liz Muller had the opportunity to speak with Maria Bartiromo on Fox Business about the federal actions and Deep Fission’s long-term vision.

The Business Journals | 06.02.2025

Entrepreneur drills into AI energy demand with second nuclear startup

A Berkeley entrepreneur is drilling down — literally — into the complex problems facing the tech industry’s desire for nuclear energy to power artificial intelligence.

The Cool Down | 05.22.2025

High-tech companies announce quest to bury nuclear reactors a mile underground: ‘Highest levels of safety’

A new nuclear energy technique could soon be running massive data centers that power today’s digital lives with zero carbon emissions and barely a trace on the Earth’s surface. Nuclear energy company Deep Fission and Endeavour, an organization focused on sustainable infrastructure, have partnered for the task.

Wired | 04.29.2025

States and Startups Are Suing the US Nuclear Regulatory Commission

Critics of the NRC say its red tape and lengthy authorization timelines stifle innovation, but handing some of its responsibilities to states could undermine public trust and the industry’s safety record.

Axios | 04.25.2025

Scoop: Deep Fission raising up to $15M for underground reactors

Deep Fission plans to build a reactor above ground, then lower it a mile down a 30-inch borehole. The startup says its approach eliminates the need for costly pressure and containment systems.

Business Insider | 04.22.2025

We’re a father-daughter duo who have built 3 successful businesses. Working together isn’t always easy, but it’s meaningful.

Deep Fission CEO Liz Muller and her 81-year-old father, inventor Rich Muller, shared their secret to building three successful businesses together including: Berkeley Earth, a nonprofit that provides critical climate-science data; Deep Isolation, a nuclear waste disposal company; and Deep Fission, a nuclear energy company burying small modular reactors a mile underground.

Reason | 04.15.2025

Why Nuclear Energy Developers Are Suing Federal Regulators

The lawsuit will hopefully make stringent regulations for nuclear power a relic of the past.

Power Magazine | 04.14.2025

Why We’re Suing the Nuclear Regulatory Commission—and Still Believe in Nuclear Regulation

At Deep Fission, we’re taking a radically different approach to nuclear energy: smaller, safer, faster to deploy—and located a mile underground. By placing reactors deep beneath the Earth’s surface, we use the natural containment of billions of tons of bedrock to dramatically improve safety and cut costs.

Inevitable, an MCJ podcast | 04.10.2025

Nuclear Waste Solved in Weeks, Not Decades? Liz Muller Explains

Korea.net | 01.14.2025

Energy Tech University to Help Develop Next-Gen Nuclear Reactors

Korea Institute of Energy Technology (KENTECH) is the nation’s first university to collaborate with a U.S. nuclear power company in technological development. The school on Jan. 13 announced that it signed a memorandum of understanding (MOU) on Jan. 7 on an energy project with Deep Fission, an American startup in nuclear energy.

World Nuclear News | 01.08.2025

Deep Fission and Endeavour announce strategic partnership

California-based nuclear startup company Deep Fission, which is proposing to place microreactors deep underground, and Endeavour Energy LLC have committed to co-develop 2 GW of nuclear energy to power Endeavour’s expanding portfolio of data centres. The first reactors are expected to be operational in 2029.

TechCrunch | 01.07.2025

Nuclear startup Deep Fission plans to bury micro-reactors to power data centers

Deep Fission, a nuclear startup, signed a deal on Tuesday with data center developer Endeavour to build 2 gigawatts’ worth of subterranean nuclear power.

Data Centre Dynamics | 01.07.2025

Deep Fission to supply Endeavour data centers with 2GW of nuclear energy from “mile-deep” SMR

Deep Fission, a small modular nuclear reactor (SMR) developer, has partnered with Endeavour Energy, a US sustainable infrastructure developer, to develop and deploy its technology at scale.

Power Engineering | 01.07.2025

California startup strikes deal with data center customer to deploy underground SMRs

Deep Fission aims to eliminate the need for costly concrete and steel surface containment buildings by placing its reactor a mile underground.

Fox Business | 10.28.2024

Nuclear Fission CEO on placing reactors under billions of tonnes of rock

Deep Fission co-founder and CEO Elizabeth Muller discusses placing nuclear reactors a mile underground on ‘The Claman Countdown.’

ZME Science | 09.13.2024

Why This Startup Wants to Bury Nuclear Reactors a Mile Underground

A new startup thinks an underground reactor could solve nuclear power’s biggest problems.

Techno-Science | 09.12.2024

Burying a nuclear power plant 1 mile deep: this ambitious American project

An American company is proposing an innovative solution: a nuclear reactor buried 1 mile (1.6 kilometer) beneath the earth's surface.

Ignition | 09.12.2024

A Q+A with Liz Muller, CEO of Deep Fission

Serial entrepreneur Liz Muller has a new vision for the nuclear energy sector: putting SMRs deep underground.

The Cool Down | 09.05.2024

US company designs ‘groundbreaking’ subterranean power station with revolutionary nuclear technology: ‘We’ve innovated beyond other reactor designs’

Scientists are working hard to figure out how to produce nuclear energy safely, cheaply, and efficiently.

World Nuclear News | 08.29.2024

Deep Fission unveils underground reactor concept

California-based nuclear startup company Deep Fission, which is proposing to place microreactors deep underground, announced its emergence from stealth mode and a USD4 million pre-seed investment round.

Nuclear Engineering International | 08.27.2024

Funding secured for underground microreactor

US-based nuclear start-up Deep Fission has announced its emergence from stealth mode and a $4m pre-seed financing round, led by 8VC.

Data Centre Dynamics | 08.23.2024

Startup raises $4m to build nuclear reactors a mile underground

Elsewhere, could novel limestone pellets be "coal without the consequences"?

Finsmes | 08.23.2024

Deep Fission Raises $4M in Funding

Deep Fission, a Berkeley, CA-based nuclear energy company, raised $4M in funding.

Axios | 08.22.2024

Exclusive: $4 million for Deep Fission’s underground nuclear reactors

Deep Fission raised $4M in funding for underground nuclear reactors.

Announcements

07.01.2025

General Patrick Huston Joins Deep Fission Advisory Board Amid Heightened National Interest in Advanced Nuclear Energy and AI

Deep Fission is proud to announce that Brigadier General Patrick Huston, U.S. Army (ret.), has joined its advisory board. With a distinguished 35-year career spanning military leadership, national security law, and emerging technologies, General Huston brings invaluable perspective at a time of increasing federal interest in resilient energy systems.

04.24.2025

Former Lyft President Kristin Sverchek Joins Deep Fission’s Advisory Board to Help Guide Growth, Regulatory, and Public Impact

Deep Fission Inc. (Deep Fission), an advanced nuclear energy company burying small modular reactors a mile underground for cheaper, faster, and more scalable deployment, is proud to announce that Kristin Sverchek has joined its Advisory Board. Kristin’s deep expertise in governance and public engagement will be integral as the company works to advance regulatory pathways, bolster public confidence in nuclear energy, and bring its urgently needed technology to market.

04.07.2025

Deep Fission Joins Federal Lawsuit to Modernize Nuclear Regulation and Accelerate Safe Reactor Deployment

Deep Fission announced today that it has joined a federal lawsuit aimed at modernizing how the Nuclear Regulatory Commission (NRC) interprets and applies the Atomic Energy Act.

04.03.2025

Deep Fission and Deep Isolation Sign MOU to Launch Full-Cycle Nuclear Energy Solution

Deep Fission Inc. (Deep Fission), the pioneering nuclear energy startup revolutionizing the industry by placing reactors a mile underground, and Deep Isolation, a leader in deep borehole nuclear waste disposal solutions, have signed a Memorandum of Understanding (MOU) to collaborate on spent fuel management for Deep Fission’s advanced underground reactors. This agreement marks a shared commitment to ensuring a comprehensive approach to the full nuclear fuel cycle.

03.27.2025

Deep Fission Taps Veteran Nuclear Regulator Rani Franovich to Drive Licensing Strategy for Underground Reactors

Deep Fission Inc. (Deep Fission) a pioneering nuclear energy company redefining the industry by placing small modular reactors (SMRs) a mile underground announced today the appointment of Rani Franovich as Vice President of Regulatory Affairs. A nationally respected expert in nuclear oversight and licensing, Rani brings decades of regulatory experience to support Deep Fission’s bold vision: commercializing deep geologic nuclear power for a safer, faster, and more scalable energy future.

02.25.2025

Deep Fission Hires Chief AI Officer to Amplify Human Ingenuity and Streamline Operations

Deep Fission, the trailblazing nuclear energy startup transforming the industry by delivering safe, scalable, onsite, and cost-effective power from small modular reactors (SMRs) a mile underground, is proud to announce the hiring of Stuart Lacey as its Chief AI Officer. In this new role, Stuart will spearhead Deep Fission’s efforts to leverage artificial intelligence across all facets of its business.

01.14.2025

Korea Institute of Energy Technology (KENTECH) Signs MOU with U.S.-Based Deep Fission to Advance Nuclear Energy Technology

The Korea Institute of Energy Technology (KENTECH) engaged with Deep Fission Inc., a U.S. nuclear energy startup co-founded by renowned physicist and CTO, Professor Richard Muller. The agreement highlights KENTECH’s commitment to advancing and implementing innovative nuclear technology in Korea and beyond.

01.07.2025

Deep Fission and Endeavour Partner to Speed Delivery of Low-Cost Nuclear Power for Hyperscalers, Targeting 5-7 Cents Per kWh

Deep Fission announced a strategic partnership with Endeavour Energy, LLC (Endeavour), a sustainable infrastructure company focused on developing ultra-efficient, AI-ready data centers. The collaboration represents a major leap forward in deploying next-generation nuclear power to meet the growing demands of energy-intensive industries.

11.04.2024

Nuclear Energy: A Bipartisan Solution for America’s Energy Future

Despite political gridlock, nuclear energy is one bipartisan solution that both sides of the aisle can agree on.

10.15.2024

Deep Fission Announces Inaugural Members of Advisory Board

We’re thrilled to announce the formation of the Deep Fission inaugural Advisory Board, bringing together a group of renowned leaders and visionaries from diverse industries, including advanced nuclear power, physics, the geologic subsurface, government funding, and AI. These distinguished experts will offer invaluable strategic guidance and support as we advance in our mission to deliver clean, reliable, cost-effective nuclear power a mile underground.