Oklo is rapidly becoming a household name, at least among households with members who pay attention to energy industry developments and/or the headliners in the financial press.



Oklo is in the process of designing and permitting a family of small modular reactors that it plans to own and operate to produce electricity, heat and isotopes that it will sell to its end customers under long term power purchase agreements (PPA).



The specific type of SMR that Oklo has chosen as the one with the best chance to economically meet its needs as a power and heat producer – over the long haul – is a liquid sodium cooled, fast neutron reactor designed to closely match the features and performance of the Experimental Breeder Reactor II (EBR-II). That impressively successful demonstration reactor, which produced about 20 MWe, ran reliably for 30 years (1964-1994).



Oklo has stated that it intends to produce 15, 50 and 75 MWe versions of the system in order to best meet the needs of the customers it is aiming to serve.



An integral part of the Oklo vision is to recycle used nuclear fuel, the material that is often referred to as spent nuclear fuel or even “nuclear waste.” The fact that the material still contains about 90-95% of its initial potential energy is finally becoming common knowledge. Oklo believes that fast spectrum reactors are the technology that is best suited for converting used fuel materials into useful energy, and it also believes that affordably recycling fuel is essential to meeting its long term economic projections.



Architectural rendering of an Oklo Powerhouse – Used with permission from Oklo


Part of Oklo’s business model is focusing on community acceptance for its powerhouses. They are designed to be aesthetically pleasing to the point where Oklo powerhouse images are often used to illustrate articles about advanced nuclear energy that focus on other companies. The company has talked about designing the stations to be community gathering places and also talked about beneficially using waste heat for purposes like heating swimming pools or district heating systems.



For Atomic Show #338, I spoke with Craig Bealmear, Oklo’s Chief Financial Officer (CFO). Craig described his 30-year background in the energy industry, mostly working in finance and accounting for BP. He spent most of his career in their marketing arm selling gasoline, diesel and jet fuel to large customers, but also ran several commercial enterprises within the company.



We discussed Oklo’s experience as one of three publicly traded pure plays in advanced nuclear energy during a period when excitement about nuclear energy hit an inflection point and dramatically increased demand for a commodity in very short supply. (Note: The supply of publicly traded pure plays in nuclear has recently doubled, creating a situation that is testing the strength of the demand for those companies.)



We spoke about the company’s vision, its business model and the way that its business model drove the selection of liquid metal fast spectrum reactors. Oklo’s founders – Jake and Caroline DeWitt – were attracted to their ability to operate at near atmospheric pressure while achieving high enough temperatures to create steam at the conditions used by modern Rankine Cycle steam plants. They believed that characteristic, along with the impressive results of EBR-II passive safety tests, will allow them to reduce the portion of their systems that are classified as safety-related. Sodium has been proven to be chemically compatible with stainless steel over a long period of high temperature operatio...