The 890 square-mile Idaho National Laboratory Site (INL), located in southeastern Idaho, was first established in 1952 as the National Reactor Testing Station. The original mission of the INL site was to develop and test civilian and defense nuclear reactor technologies and manage spent nuclear fuel. Fifty-two reactors — most of them first of a kind — were built at the site, including the Navy’s first prototype nuclear propulsion plant. Of the 52 reactors, four remain in operation.
Employees supporting the spent nuclear fuel wet-to-dry project at the Idaho National Laboratory Site celebrate the last fuel elements removed from a water-filled basin within a building at the Idaho Nuclear Technology and Engineering Center. Crews completed the 1995 Idaho Settlement Agreement milestone more than nine months ahead of schedule.
Idaho News
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Idaho Cleanup Project crews are preparing for the next stages of construction of a waste disposal facility expansion project following recent progress that includes completion of excavation for a new disposal cell and evaporation pond areas.February 4, 2025
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The U.S. Department of Energy Office of Environmental Management successfully completed the majority of its 2024 priorities, advancing critical cleanup work with the support of state, tribal and local partners.January 17, 2025
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Since beginning radiological operations in April 2023, the Integrated Waste Treatment Unit at the Idaho Cleanup Project has run a successful radiation protection program.January 14, 2025
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The U.S. Department of Energy Office of Environmental Management and its contractor at the Idaho Cleanup Project have removed an important support structure.January 7, 2025
Mark Brown currently serves as the Manager for the Idaho Cleanup Project, responsible for the management and oversight of the treatment, storage, and disposition of a variety of radioactive and hazardous waste streams, removal and disposition of targeted buried waste, and the removal of DOE’s inventory of spent nuclear fuel and high-level waste from Idaho.
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High-Level Budget Information
| FY22 Enacted (In the millions) | FY23 Request (In the millions) | FY23 Enacted (In the millions) | FY24 Request (in the millions) | FY24 Enacted (in the millions) | FY25 Request (in the millions) |
| $454 | $391 | $472 | $459 | $490 | $471 |
For more information on the Office of Environmental Management's budget process and performance check out the Budget & Performance page.