Mon Dec 15, 02025, 3:00PM UTC
Kristen Cullen
CFS Tokamak Tour
Tour and overview of Commonwealth Fusion Systems tokamak.
The dream of a nuclear fusion energy source has been discussed for decades, but no one has been able to crack it. Now, a handful of ambitious young companies seem to be within reach of doing so. Commonwealth Fusion Systems in Devens, MA, is one of them. The recent recipient of nearly $3 billion in federal funds, CFS is well-positioned to achieve this elusive goal.
Long Now Boston has arranged for an exclusive guided tour of the CFS tokamak and other accessible areas on December 15, 2025 at 10 am. This event has tight attendance limits so join now if you’re interested in this rare opportunity.
Decades of worldwide, government-sponsored research in fusion science have established the tokamak-based configuration as the highest performing approach to fusion. Yet in the past, tokamaks had to be enormous in size to produce net energy from fusion. CFS is using revolutionary high temperature superconducting magnets developed in collaboration with MIT to build smaller and lower-cost tokamak fusion systems. The company is manufacturing these magnets and building the world’s first commercially-relevant net energy fusion machine, called SPARC. SPARC will pave the way for the world’s first fusion power plant, called ARC.
Can CFS be the first to design, build, and scale fusion power plants that will deliver cost-competitive, clean fusion energy to combat climate change? Come immerse yourself in the science and policy of what could be an energy game changer!
All attendees must register by Dec 11 in order to attend! Members will have priority until Dec. 7, after which we will open remaining spots to non-members. Before and at the event you will need to show a government ID with the same name you registered under.
If you are not a member and want to be notified of available spots after Dec. 7, email info@longnowboston.org.
As VP of Global Policy & Public Affairs at Commonwealth Fusion Systems (CFS), Kristen leads efforts related to global public policy, state government relations, public affairs, community relations, and siting.
She led the global siting search for the world’s first fusion power plant in Chesterfield County, and previously led the siting process for CFS' commercial fusion campus and headquarters, now in Devens, MA.
Prior to CFS, she was a senior vice president for the public affairs practice at Rasky Partners, where she developed and implemented communications, public affairs, and government relations strategies for a range of clients specifically in regulated industries.
Cullen also has worked in the Massachusetts Statehouse, and as a campaign manager and communications director on federal, state, and local political campaigns.
She started her career as a reporter working for local ABC and NBC affiliates. Her reporting experience includes covering the Iowa Caucuses and New Hampshire Primary leading up to the 2008 Presidential Campaign. Her reporting has appeared nationally on CNN, ABC, and GMA.
Cullen earned a bachelor’s degree in Political Science from Wheaton College, and a master’s degree in Broadcast Journalism from Emerson College.
Kristen Cullen
