Nuclear Energy Regulatory Consultants
Regulatory Strategy Solutions for Nuclear Energy Companies
Regulatory Strategy Solutions for Nuclear Energy Companies
Prometheus Nuclear was founded by Dr. Dan Joyner based on more than two decades of experience studying, teaching, implementing, and practicing nuclear energy law and regulation.
Dan has worked on nuclear regulatory and nonproliferation issues in academic, governmental, and private-sector settings, and has spent much of his career advising on how complex nuclear regulatory systems actually function in practice—not just on paper.
In his legal practice, Dan has seen a dramatic increase in the number of startup and growth-stage companies entering the nuclear energy sector. While some of those companies, and most legacy nuclear firms, require outside counsel for large transactions, litigation, or formal licensing proceedings, many nuclear startups do not need (and often cannot sustain) continuous engagement with large law firms.
Most of these companies have an in-house General Counsel who capably manages day-to-day legal issues and external counsel relationships. What those GCs often lack is deep, specialized nuclear regulatory expertise and the bandwidth to develop and maintain a coherent regulatory strategy across the life of the company.
In a highly regulated industry like nuclear energy, regulatory considerations shape nearly every major business decision - from information-sharing and cybersecurity practices, to technology development and deployment pathways, to government partnerships, siting decisions, licensing strategy, and long-term lifecycle planning.
Hiring a large law firm to help think through these issues at a strategic level is often prohibitively expensive and inefficient, especially when the questions are not yet about filings or litigation, but about direction.
This is where Prometheus Nuclear comes in.
Prometheus Nuclear provides strategic nuclear regulatory and policy advisory services designed to complement in-house legal teams and outside counsel. We help companies design sound regulatory strategies and then support their implementation over time, whether on a project-specific basis or in an ongoing, fractional advisory role similar to an assistant or fractional general counsel focused specifically on nuclear regulatory matters.
Our work often includes:
· helping GCs and executives develop an overall regulatory architecture and sequencing strategy;
· advising on how regulatory considerations should inform business structure, governance, and internal compliance programs;
· supporting the development of internal policies, processes, and decision-making frameworks that align with regulatory realities;
· serving as an ongoing sounding board as regulatory, policy, and political conditions evolve.
Prometheus Nuclear sits upstream of traditional legal representation, but we do not disappear once a strategy is chosen. Law firms play a critical role in executing defined legal strategies—licensing, transactions, compliance, and advocacy. Prometheus helps ensure that those legal efforts are grounded in a realistic, well-thought-through regulatory approach and continues to support clients as that approach is implemented inside the company.
We are not a law firm, and we do not charge law-firm rates. That allows us to engage flexibly, focus on judgment and strategy rather than billable throughput, and provide sustained, practical regulatory support without the cost or rigidity of a full-time hire.
If your company is operating in the nuclear energy space and needs both strategic clarity and ongoing regulatory support, Prometheus Nuclear is built to help.

At Prometheus Nuclear LLC we are regulatory strategy and risk consultants. We have decades of expertise, and experience helping clients to navigate U.S. and international regulatory regimes to achieve their business goals across the nuclear fuel cycle. We have deep expertise and experience in the following areas:
Our consulting teams offer tailored advice and planning to nuclear energy companies of all sizes, but we specialize in helping nuclear energy companies in the early stages of business development and coming to market. We can serve as one-off regulatory consultants, or as fractional chief regulatory strategists to companies who need expert advice, but who want to minimize overhead by not making full time hires or hiring outside legal counsel.
Talk to us and see if we can help your company.

Dan Joyner has been a prominent legal scholar and practitioner in nuclear energy law and international trade law for more than two decades. Through Prometheus Nuclear LLC, he leads a team of expert consultants who help sovereign states and private nuclear energy companies navigate complex issues of regulatory regime compliance, investment structuring, and import and export of nuclear materials, technologies, and services.
Email at djoyner@prometheusnuclear.com
See Dan's Bio here
And see some of his recent writing below.
Prometheus Nuclear LLC is a consulting company providing strategic, regulatory, and risk-management advisory services in the nuclear energy sector. Prometheus Nuclear LLC does not provide legal services and does not establish attorney–client relationships.
The information contained on this website is provided for general informational purposes only and does not constitute legal advice or professional advice of any kind. You should not act upon any information presented on this website without seeking appropriate professional counsel.
All consulting services offered through Prometheus Nuclear LLC are subject to applicable U.S. laws and regulations, including but not limited to those governing nuclear materials, export controls, and national security (e.g., the Atomic Energy Act, DOE Part 810, NRC Part 110, EAR, and OFAC regulations). Prometheus Nuclear LLC reserves the right to decline engagements that would involve restricted activities under these regimes or would present conflicts of interest.
Use of this website and of any linked materials is at your own risk. Prometheus Nuclear LLC makes no warranties, express or implied, regarding the accuracy, completeness, or currency of any content herein.
Prometheus Nuclear LLC respects your privacy. Any information submitted through this website — such as your name, email address, or other contact information — will be used solely for purposes of responding to your inquiries or managing professional engagements. We do not sell or disclose personal information to third parties.
This website may use cookies or analytics tools (including Google reCAPTCHA) to protect against spam and improve functionality. Use of this site constitutes consent to those tools as governed by Google’s Privacy Policy
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.