Experimental Breeder Reactor-I

Experimental Breeder Reactor-I Visit and learn more about nuclear research reactors. In 1951, EBR-1 is where usable electricity was Have you ever seen a nuclear reactor? to 5 p.m.
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Ever wonder how electricity is generated from nuclear energy? Satisfy your curiosity by visiting the Experimental Breeder Reactor No. 1 (EBR-I) Atomic Museum, located on U.S. Highway 20/26 between Idaho Falls and Arco (see map). The facility, a National Historic Landmark where usable electricity was first generated from nuclear energy in 1951, is open to the public from Memorial Day weekend through Labor Day weekend — seven days a week — from 9 a.m. Admission is free. It’s the only place in America you can see four nuclear reactors — including two aircraft nuclear propulsion prototypes, a reactor control room, remote handling devices for radioactive materials, radiation detection equipment, and much more. New in 2011 are colorful, interactive displays that tell the story of EBR-I’s sibling, Experimental Breeder Reactor No. 2 (EBR-II), the reactor that once powered much of the site, operated with a novel closed fuel cycle and demonstrated its inherent safety. You can walk through the museum using the self-guided tour instructions, or take a guided tour with one of the summer season tour guides.

  to a world-changing moment in Idaho. 🌍⚡ On Dec. 20, 1951, Experimental Breeder Reactor-I became the first power plant ...
06/25/2026

to a world-changing moment in Idaho. 🌍⚡

On Dec. 20, 1951, Experimental Breeder Reactor-I became the first power plant to generate usable amounts of electricity from atomic energy!

Over the next 12 years, EBR-I demonstrated a reactor could produce more fuel than it used — a milestone that helped shape the future of nuclear energy.

Almost 75 years later, Idaho National Laboratory continues to build on that legacy. ⚛️ Learn more: https://inl.gov/ebr/

06/19/2026

Kick off your summer with an Experimental Breeder Reactor‑I tour! ☀️⚛️

What’s inside?
• "First floor" - main floor: Fuel-handling history, radiation tools, an Experimental Breeder Reactor‑II exhibit, and a theater inside a model containment vessel.
• "Second floor" - mezzanine: The spot where four lightbulbs were powered by nuclear energy for the very first time, the fully interactive EBR‑I control room, and a viewing spot directly above the reactor core.
• "Third floor" - basement: Explore where the reactor core and support systems once operated.

Free guided tours will be offered daily – seven days a week – from 9 a.m. to 5 p.m., now through Labor Day! 🚗

Learn more about EBR-I ➡️ https://inl.gov/ebr/

Address

18 Miles Southeast Of
Arco, ID
83213

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