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39 – EBR-1

Experimental Breeder Reactor I (EBR-I), located near Arco, Idaho, holds the distinction of being the world’s first nuclear reactor to generate usable electricity. On December 20, 1951, it produced enough power to illuminate four 200-watt light bulbs, marking a pivotal moment in nuclear energy history. Beyond electricity generation, EBR-I was instrumental in demonstrating the breeder reactor concept in 1953, successfully creating more fissile material than it consumed.

Decommissioned in 1964, EBR-I was designated a National Historic Landmark in 1965 and now operates as a museum open to the public from late May through Labor Day. Visitors can explore the facility and learn about its groundbreaking contributions to nuclear science.

More Information

This is a really good video by one of my favorite YouTuber’s and he gets an extensive tour of this site. Well worth watching.

https://en.wikipedia.org/wiki/Experimental_Breeder_Reactor_I


Coordinates: 43.511812, -113.005796
Elevation: 5023 ft
Difficulty: 1
What to Expect: No info

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Justin

Being after Labor day, it was closed for the season. I’ll have to try again sometime.

What bike did you take?
2003 Suzuki DR650
Ride Difficulty (1 to 5)
1
39-–-EBR-1
FE701LR

Amazing site with good STEM history.

What bike did you take?
701
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1
IMG_0494
Alex Crane

This has to be my favorite site so far, and we didn’t even make it inside. There is a 100% chance I’m coming back to do the tour with the family.

What bike did you take?
R1200GS
Ride Difficulty (1 to 5)
1
erb1
Dan Huff

I took the tour and the reactor was a lot smaller than I expected. If you have any interest in nuclear energy, you should visit the B Reactor at Hanford, Washington.

What bike did you take?
BMW R1250 GSA
Ride Difficulty (1 to 5)
1
EBR
foolhardy

Interesting history there. We took the guided tour. I would have never guessed that part of the reason the area was chosen was because there was so much available water.

What bike did you take?
KLR 650
Ride Difficulty (1 to 5)
1
IAMC-2025-EBR1
englund

Did the self guided tour. Great museum.

What bike did you take?
DR650
Ride Difficulty (1 to 5)
1
39-2025-EBR-1
Stacy Hardy

First time in this part of the state. We took the museum tour. It was very interesting.

What bike did you take?
TW200
Ride Difficulty (1 to 5)
1
IMG_2914
Idabiker

Another first stop for me. Interesting history here!

What bike did you take?
KLR650
Ride Difficulty (1 to 5)
1
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Cuprum Hermit

And they said this could crash land without radiation risk! I am a bit skeptical.

What bike did you take?
990 Adv
Ride Difficulty (1 to 5)
1
IMG_2433
Ed Torrey

I got this site on Alec’s 3 day 1300 mile ride day2. Another great place to check out

What bike did you take?
KTM 890
Ride Difficulty (1 to 5)
1
PXL_20250619_144243790
chatty

Interesting site. Not sure the nuclear plane would have ever left the ground, but cool we have this in our back yard!

What bike did you take?
GSA1250
Ride Difficulty (1 to 5)
1
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Brandon

This was some strange machinery. Looks like it was out of a Mad Max movie set.

What bike did you take?
690 EnduroR
Ride Difficulty (1 to 5)
1
IMG_1049
Lister2

Hit this site on the way back home. 4 of 5 sites today. Friday April 11th.

What bike did you take?
BMW R1200GSA
Ride Difficulty (1 to 5)
1
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