Providing New Energy Resources in Wyoming

Delivering carbon-free, reliable power to the electricity grid and good-paying jobs to Wyoming for decades to come.

The Demonstration Project

TerraPower is working to advance a Natrium™ reactor demonstration project at a retiring coal plant in Kemmerer, Wyoming. This advanced energy demonstration project is intended to validate the design, construction and operational features of the Natrium system, a TerraPower and GE Hitachi technology.

The project features a 345 MWe sodium-cooled fast reactor with a molten salt-based energy storage system.The storage technology can boost the system’s output to 500 MW of power when needed, which is equivalent to the energy required to power around 400,000 homes. The energy storage capability allows the plant to integrate with grids that have a high penetration of renewable resources.

100% Secure

The Natrium technology enhances safety, building on existing reactors’ already strong track record of safe operations. Instead of water, the Natrium reactor uses sodium as its coolant.

Utilizing Local Workforce

Wyoming has been a leader in energy for more than 100 years. Wyoming is home to highly-skilled, well-trained workers who understand the value of always-on electricity for their communities.

Industry Leading

The Natrium technology will use the high temperature heat from the reactor to power a molten salt storage system that can store tremendous amounts of energy; levels of magnitude larger than the energy stored in typical battery storage facilities.

U.S. Advanced Reactor Demonstration Program

TerraPower is building the Natrium plant through a public-private partnership with the U.S. Department of Energy’s (DOE) Advanced Reactor Demonstration Program (ARDP). This program authorizes up to $2 billion for the Natrium project. TerraPower and partners will match this investment dollar for dollar.

Upon completion, the Natrium plant will be a fully functioning commercial power plant. PacifiCorp will own and operate the plant as part of its energy generation fleet.

Project Supporters

Our state continues to pave the way for the future of energy.

”I am thrilled to see Wyoming selected for this demonstration pilot project, as our great state is the perfect place for this type of innovative utility facility and our coal experienced workforce is looking forward to the jobs this project will provide. I have always supported an all-of-the-above energy portfolio for our electric utilities. Our state continues to pave the way for the future of energy, and Wyoming should be the place where innovative energy technologies are taken to commercialization.
Mark GordonWyoming Governor

Helps Wyoming’s communities remain viable and thriving.

”I commend Rocky Mountain Power for joining with TerraPower in helping Wyoming develop solutions so that our communities remain viable and continue to thrive in a changing economy, while keeping the state at the forefront of energy solutions.
Dan DockstaderWyoming Senate President

An exciting economic opportunity for Wyoming.

”This project is an exciting economic opportunity for Wyoming. Siting a Natrium advanced reactor at a retiring Wyoming coal plant could ensure that a formerly productive coal generation site continues to produce reliable power for our customers. We are currently conducting joint due diligence to ensure this opportunity is cost-effective for our customers and a great fit for Wyoming and the communities we serve.
Gary HoogeveenPresident and CEO of Rocky Mountain Power, a division of PacifiCorp

Due to the Natrium plant, the prospect of coming home and working in this field is possible.

”Growing up in Kemmerer, it became very apparent that in my desired job field, there weren’t many job opportunities for me to come back to. I am extremely excited for the Natrium plant to come. It will not only boost our small-town economy but give my family and so many others the option to stay in Kemmerer. Due to the Natrium plant, the prospect of coming home and working in this field is possible.
Olivia NielsonKemmerer High School Graduate, Civil Engineering Major

Our producers stand ready, willing, and able to safely provide vital fuel.

”This is an exciting opportunity for Wyoming to open a new chapter in the nuclear power industry.  Advanced nuclear generation clearly fits the bill for zero-emission, reliable and dispatchable electricity necessary to power our country into the future.  Wyoming is the nation’s leader in the production of domestic uranium.  Our producers stand ready, willing and able to safely and responsibly provide the vital fuel for America’s next generation of nuclear power.
Travis DetiExecutive Director, Wyoming Mining Association

By selecting our community, TerraPower has opened a plethora of opportunities for positive, responsible, and sustainable growth throughout the whole community.

”TerraPower's selection of Southwestern Wyoming as the site for their new clean nuclear energy technologies has unleashed great opportunity to a rich and diverse area of Wyoming known for its energy and mineral production, fossil tourism, agriculture, and outdoor recreation. The new ideas from PacifiCorp and TerraPower, in the Kemmerer/Diamondville area, has brought an air of innovation in complementary industries such as clean energy recycling, hydrogen hub development, carbon capture and storage, but most importantly the expansion and new uses of natural gas, oil, and coal. By selecting our community, TerraPower has opened a plethora of opportunities for positive, responsible, and sustainable growth throughout the whole community.
Stephen P. AllenMBA, Liaison for the South Lincoln County Economic Development Corporation (SLCEDC)

The Wyoming Business Alliance is proud to welcome TerraPower to Wyoming and looks forward to all phases of the Natrium project development.

”The Wyoming Business Alliance represents the interests of Wyoming businesses and the business point of view. Our members support a diversified economy that encourages businesses to target and embed new technologies to gain and maintain a competitive advantage in the marketplace. The Wyoming Business Alliance is proud to welcome TerraPower to Wyoming and looks forward to all phases of the Natrium project development.
Cindy DelanceyPresident, Wyoming Business Alliance

We look forward to the exciting clean energy future that TerraPower will bring to Wyoming!

”Our beloved town of Kemmerer has a rich history in providing the energy that drives Wyoming. Our shop, Fossil Fuel Coffee Co, pays tribute to that heritage and to the natural wonder of our entire region. Now we look forward to the exciting clean energy future that TerraPower will bring to Wyoming!
Elizabeth and Brian TrespOwners of Fossil Fuel Coffee Co.

TerraPower’s announcement to develop the Natrium Demonstration Reactor and to site the project in Wyoming was a seminal event in establishing new markets for other well-established industries within the state.

”TerraPower’s announcement to develop the Natrium Demonstration Reactor and to site the project in Wyoming was a seminal event in establishing new markets for other well-established industries within the state. The announcement fueled optimism for Peninsula Energy, a Wyoming based uranium producer. Wyoming is a leader in uranium production and Wyoming’s producers are now motivated to reestablish a meaningful domestic uranium production capacity. Congratulations and welcome to Wyoming!
Wayne HeiliManaging Director/CEO, Peninsula Energy – Casper Wyoming

Project Team