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Office of Nuclear Energy | US Department of Energy

@GovNuclear119k followers

@ENERGY’s home for nuclear energy research, demos, and deployment. RT/Mentions aren't endorsements.

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1Jun 17, '25WATCH: It's not every day you get to see a test reactor pulse!384×7.2M25k1.8k4.1k
2Jun 21, '24THAT'S IT? This is what 20 years worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. The energy produced from this fuel helped avoid 70 m350×6.6M34k5.1k3.1k
3Nov 15, '25THAT’S IT? This is what 20 years’ worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. The plant generated 119 billion kilowatt hours of r335×6.3M19k1.7k1.9k
4Sep 28, '24THAT'S IT? This is what 20 years worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. `The energy produced from this fuel helped avoid 70 60.7×1.1M7.2k1.1k703
5Apr 2, '25The U.S. nuclear renaissance starts now.55.2×1M16k1.4k426
6Jul 28, '24THAT'S IT? This is what 20 years worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. The energy produced from this fuel helped avoid 70 m51.2×964k5.4k949408
7Jan 20, '23🧵: So... this happened yesterday 🙌 ( 1/ )32.9×619k3.4k637188
8May 30, '24WATCH 👀: It's not every day you get to see a test reactor pulse!25.2×474k4.2k494649
9Jul 20, '25ON THE MOVE: This transportable microreactor developed by @WECNuclear is being designed to generate 5 MWe and operate for up to 8 years or longer without refueling. Westinghouse is21.4×402k5.7k1.1k792
10Jun 1, '24Let’s go 🙌19.8×372k76714842
11Feb 3, '23NUCLEAR 101: Microreactors are factory-built, plug-and-play reactors. They can be used to power military bases, disaster recovery efforts or remote locations where traditional infr19.5×368k2.1k350117
12May 3, '25So, how big is a microreactor? Our MARVEL reactor will be roughly the size of an average sedan and produce enough energy to power 10 U.S. homes.13×244k2.9k444277
13Jul 15, '23How do you hold a ton of coal in your fingertips🤏? Replace it with a uranium fuel pellet. It yields the same amount of energy as 17,000 cubic feet of natural gas, 149 gallons of o11.2×211k1k20440
14Apr 29, '25POWERFUL PROGRESS: Nuclear is off to a fast start under the Trump Administration. Here are 11 key accomplishments from President Trump's first 100 days. 🧵 (1/12)10.0×188k3.3k452350
15Sep 20, '24BREAKING: @CEGCleanEnergy announces plans to restart Three Mile Island Unit 1. The company signed a 20-year power purchase agreement to provide carbon-free electricity for @Microso9.6×181k1.8k29189
17Sep 9, '24🧵: BREAKING: @ENERGY releases preliminary report that finds more than 60 GW of new nuclear capacity could potentially be built at currently operating or recently retired nuclear p9.3×175k918236112
18Feb 20, '24No, she didn't...8.3×157k1.2k213124
20Jan 2, '23WATCH 👀: @INL researchers captured this incredible footage of critical heat flux—a physical phenomenon that occurs when a fuel rod first begins to overheat and can no longer trans7.5×142k1.6k284101
21Jan 27, '23nuclear energy...7.5×141k846663
22Apr 4, '25Let’s make nuclear great again.7.4×140k3.5k32750
23Dec 22, '24THAT'S IT? This is what 20 years’ worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. The energy produced from this fuel helped avoid 70 6.5×122k2.1k381167
24Apr 15, '25It’s time to unleash nuclear energy.6.4×120k2.4k19742
26Apr 9, '25THAT’S IT? This is what 20 years’ worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. The plant generated 119 billion kilowatt hours of r6.0×114k3.2k352203
27Jan 15, '23Uranium…6.0×113k665589
28Sep 17, '23WATCH 👀: It's not every day you get to see a test reactor pulse!6.0×113k1.6k238112
29May 6, '24That’s it? This is what 45 years of spent nuclear fuel looks like safely stored @DominionEnergy’s North Anna nuclear power plant. Each cask helped avoid more than 3 million metric 5.8×109k62615277
30Feb 21, '23IT’S OFFICIAL: The final rule certifying @NuScale_Power's 50 megawatt small modular reactor takes effect TODAY. This is the first SMR ever certified by @NRCgov and the 7th reactor 5.7×107k87722938
31Aug 29, '23URANIUM: It’s all about energy density.5.3×99k90221729
32Dec 24, '22Which advanced reactor are you asking for this holiday season?5.1×96k59211230
33Sep 9, '25Four AP1000 reactors are under review for Texas.5.0×93k7688130
34Feb 18, '24That’s it? This is what 45 years of spent nuclear fuel looks like safely stored @DominionEnergy’s North Anna nuclear power plant. Each cask helped avoid more than 3 million metric 4.9×93k69921477
35Jul 23, '25Nuclear thermal propulsion rockets can reduce travel times to Mars by up to 25% and, more importantly, limit a flight crewʼs exposure to cosmic radiation 🚀⚛. Learn more:4.4×83k1.7k393348
36Mar 10, '25So, how big is a microreactor? Our MARVEL reactor will be roughly the size of an average sedan and produce enough energy to power 10 U.S. homes.4.3×82k1.6k223245
37Mar 17, '25WATCH: It's not every day you get to see a test reactor pulse!4.3×81k1.2k137115
38Jul 9, '25So, how big is a microreactor? Our MARVEL reactor will be roughly the size of an average sedan and produce enough energy to power 10 U.S. homes.4.2×78k1.2k156124
39Aug 13, '23WATCH: It's not every day you get to see a test reactor pulse! video: @iaeaorg4.2×78k1k20456
40Jun 9, '25THAT’S IT? This is what 20 years’ worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. The plant generated 119 billion kilowatt hours of r4.1×78k1k16395
41Sep 7, '24We never did4.1×76k2.4k14140
42Apr 23, '23Nuclear thermal propulsion rockets can reduce travel times to Mars by up to 25% and, more importantly, limit a flight crew's exposure to cosmic radiation. Learn more:3.6×69k83414461
43Nov 10, '20WATCH👀: It's not every day you get to see a test reactor pulse! 🎥 🎩tip: @iaeaorg3.3×01.6k44192
44Feb 9, '23WATCH 👀 : It's not every day you get to see a test reactor pulse! h/t: @iaeaorg3.3×62k72911238
45Jul 24, '25Unleashing American nuclear energy in 3...2...1...3.1×59k1.2k7437
46Mar 18, '25That’s it? This is what 45 years of spent nuclear fuel looks like safely stored at Dominion Energy’s North Anna nuclear power plant. Each cask generated around 5 billion kilowatt h3.1×58k1k19378
47Dec 27, '22More than 90% of the time, nuclear energy is working ALL the time.3.1×58k72115514
48Sep 27, '24Do you think nuclear energy is clean energy?3.0×57k1.5k5213
49Apr 2, '25Let’s go!3.0×57k1.2k14638
50Aug 25, '25It’s time to unleash nuclear energy.3.0×56k1.1k12321
51Mar 7, '25It’s time to unleash American energy and rapidly deploy new reactor technologies.2.9×55k86811928
52Apr 6, '25NUCLEAR 101: Microreactors can be used to power military bases, disaster recovery efforts, or remote locations where traditional infrastructure doesn’t exist. Learn more:2.9×54k1.1k17576
53Sep 22, '24WATCH 👀: It's not every day you get to see a test reactor pulse!2.9×54k1k125102
54Feb 14, '23I love U-2352.6×49k57314227
55Jun 19, '25Nuclear energy is the future.2.6×49k7868713
56Sep 19, '22WATCH 👀: @INL researchers captured this incredible footage of critical heat flux—a physical phenomenon that occurs when a fuel rod first begins to overheat and can no longer trans2.5×01.5k229117
57Oct 17, '24🧵: Nuclear is clean and sustainable. Here are 3 specific reasons why. (1/4)2.4×45k99818375
58May 9, '25Don’t blink. The nuclear renaissance is underway thanks to @POTUS.2.2×41k99610821
59Jul 9, '25Don’t blink. The nuclear renaissance is underway.2.2×41k1k7330
60Jul 23, '25Which advanced reactor concept is YOUR favorite?2.2×41k787120165
61Nov 13, '25WATCH: @xenergynuclear is developing this high-temperature gas reactor fueled by ultra-robust TRISO particles.2.1×39k875120239
62Oct 21, '24WATCH 👀: It's not every day you get to see a test reactor pulse!2.0×38k6538660
63Jul 31, '24WATCH 👀: It's not every day you get to see a test reactor pulse!2.0×38k65810568
64Apr 27, '25America needs more ENERGY from nuclear power.2.0×37k1.1k8511
65Aug 6, '25WATCH: It's not every day you get to see a test reactor pulse!2.0×37k8049771
66Dec 15, '22WATCH👀: It's not every day you get to see a test reactor pulse! H/T: @iaeaorg1.9×36k5498132
67Apr 12, '25Nuclear thermal propulsion rockets can reduce travel times to Mars by up to 25% and, more importantly, limit a flight crew's exposure to cosmic radiation. Learn more:1.9×36k859167136
68Jun 6, '25We’re all in on nuclear power.1.8×34k1.5k10125
69Apr 6, '25We are!1.8×34k7885912
70Aug 14, '25So, how big is a microreactor? Our MARVEL reactor will be roughly the size of an average sedan and produce enough energy to power 10 U.S. homes.1.8×34k85512687
71May 18, '25FACT: More than 90% of the potential energy still remains in spent nuclear fuel. Some advanced reactors under development could consume or even run on this fuel in the future.1.8×33k85912940
72Apr 12, '25The nuclear renaissance has been talked about for years. @POTUS is actually making it happen.1.7×33k9218716
73May 23, '25Nuclear power = energy dominance.1.7×32k1k11721
74Aug 8, '22WATCH 👀: @INL researchers captured this incredible footage of critical heat flux—a physical phenomenon that occurs when a fuel rod first begins to overheat and can no longer trans1.7×01k19055
75May 14, '25Microreactors will be a BIG deal in helping to unleash more energy in the U.S.1.7×31k95410637
76May 23, '25Energy security is national security and nuclear is well positioned to meet future energy demands thanks to @POTUS. Big day today for nuclear power.1.6×31k6098226
77Apr 5, '25Everything you need to know about advanced reactors in☝️ place.1.6×31k835168164
78Oct 1, '19ARE YOU READY🙌? These 3 advanced reactor systems could be coming as soon as 2030 and are expected to be: ▶️Smaller ▶️More flexible 🤸‍♀️ ▶️Highly efficient. 📈1.6×073930024
79Apr 19, '25Small modular reactors will have a BIG impact in this golden era of American energy dominance.1.6×30k89210722
80Apr 7, '25⚛️1.5×28k7484712
81Aug 6, '22NUCLEAR 101: Microreactors are factory-built, plug-and-play reactors. They can be used to power military bases, disaster recovery efforts or remote locations where traditional infr1.4×072419233
82Sep 13, '22🧵: COAL 🏭 TO NUCLEAR ⚛️? New @ENERGY report finds hundreds of coal power plant sites could be converted to nuclear power plant sites—more than doubling U.S. nuclear capacity to m1.4×068619534
83Jun 14, '21"Let me say it loud and clear: carbon-free nuclear power is an absolutely critical part of our decarbonization equation.” - @SecGranholm #ANSannual1.3×071215711
84Sep 5, '2292% of the time, nuclear works ALL the time.1.3×073715926
85Aug 22, '25THAT’S IT? This is what 20 years’ worth of spent nuclear fuel looks like safely stored at the former Maine Yankee nuclear plant. The plant generated 119 billion kilowatt hours of r1.3×24k65111361
86Aug 21, '25ON THE MOVE: This transportable microreactor developed by @WECNuclear is being designed to generate 5 MWe and operate for up to 8 years or longer without refueling. Westinghouse is1.2×23k68814492
87Apr 8, '25Advanced light-water small modular reactors are smaller, manufactured versions of large-scale reactors. They typically range from 20 to 300 megawatts of electric power and can come1.2×23k6809957
88Jun 28, '25Who’s ready for a nuclear energy renaissance in America? Us✋1.2×23k733546
89Apr 25, '25FACT: More than 90% of the potential energy still remains in spent nuclear fuel. Some advanced reactors under development could consume or even run on this fuel in the future. ♻️1.2×22k95917849
90Mar 7, '25NUCLEAR 101: Microreactors can be used to power military bases, disaster recovery efforts, or remote locations where traditional infrastructure doesn’t exist.1.2×22k7039547
91May 30, '25Our goal is to unleash nuclear energy.1.1×21k7356315
92Apr 20, '25NUCLEAR 101: Microreactors can be used to power military bases, disaster recovery efforts, or remote locations where traditional infrastructure doesn’t exist. Learn more:1.1×20k5988239
93Jun 17, '25FACT: More than 90% of the potential energy still remains in spent nuclear fuel. Some advanced reactors under development could consume or even run on this fuel in the future.1.0×19k6609431
94Nov 19, '22uranium...1.0×0624716
95Jul 21, '25Advanced light-water small modular reactors are smaller, manufactured versions of large-scale reactors. They typically range from 50 to 350 megawatts of electric power and can come1.0×19k67012572
96Apr 6, '25How do you hold a ton of coal in your fingertips 🤏? Replace it with a uranium fuel pellet.1.0×18k84713041
97Apr 8, '25COMING SOON? 3 microreactor experiments to keep an eye on starting in 2026.0.9×17k59111855
98Oct 5, '22WATCH👀 : It's not every day you get to see a test reactor pulse! 📹: H/T: @iaeaorg0.9×05738125
99Aug 4, '25NUCLEAR 101: Microreactors can be used to power military bases, disaster recovery efforts, or remote locations where traditional infrastructure doesn’t exist. Learn more:0.9×17k60210044
100Aug 1, '25We need MORE power, not less, and nuclear can do that with a smaller land footprint.0.9×16k744889

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