Nuclear Energy: Overview of Congressional Issues (CRS Report for Congress)
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Release Date |
Revised Dec. 3, 2024 |
Report Number |
R42853 |
Report Type |
Report |
Authors |
Mark Holt |
Source Agency |
Congressional Research Service |
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Summary:
The policy debate over the role of nuclear power in the nation’s energy mix is rooted in the
technology’s fundamental characteristics. Nuclear reactors can produce potentially vast amounts
of useful energy with relatively low consumption of natural resources and emissions of
greenhouse gases and other pollutants. However, facilities that produce nuclear fuel for civilian
power reactors can also produce materials for nuclear weapons. In addition, the process of nuclear
fission (splitting of atomic nuclei) to generate power produces radioactive material that can
remain hazardous for thousands of years and must be contained. How to manage the weapons
proliferation and safety risks of nuclear power, or whether the benefits of nuclear power are worth
those risks, are issues that have long been debated in Congress.
The 99 licensed nuclear power reactors at 60 sites in the United States generate about 20% of the
nation’s electricity. Two new reactors are currently under construction. About a dozen more are
planned, but whether they will eventually move forward will depend largely on their economic
competitiveness with natural gas and renewable energy sources. Throughout the world, 451
reactors are currently in service or operable, and 58 more are under construction.
The March 2011 disaster at the Fukushima Dai-ichi nuclear power plant in Japan increased
attention to nuclear safety throughout the world. The U.S. Nuclear Regulatory Commission
(NRC), which issues and enforces nuclear safety requirements, established a task force to identify
lessons from Fukushima applicable to U.S. reactors. The task force’s report led to NRC’s first
Fukushima-related regulatory requirements on March 12, 2012. Several other countries, such as
Germany and Japan, eliminated or reduced their planned future reliance on nuclear power after
the accident.
Highly radioactive spent nuclear fuel that is regularly removed from nuclear power plants is
currently stored at plant sites in the United States. Development of a permanent underground
repository at Yucca Mountain, NV, was suspended by the Obama Administration, but the Trump
Administration has requested funding for FY2019 to revive the program. The House approved
$100 million above the Administration request for Yucca Mountain for FY2019, but the Senate
did not provide any funding. As of this update, the FY2019 funding bill (H.R. 5895) was awaiting
conference action.
The Obama Administration had appointed the Blue Ribbon Commission on America’s Nuclear
Future to recommend an alternative approach to the Nuclear Waste Policy Act’s focus on Yucca
Mountain. In response to the commission’s recommendations, the Department of Energy issued a
waste strategy in January 2013 that called for the selection of new candidate sites for nuclear
waste storage and disposal facilities through a “consent-based” process and for a surface storage
pilot facility to open by 2021. However, Congress has not enacted legislation for such a strategy,
so Yucca Mountain remains the sole authorized candidate site.
The level of security that must be provided at nuclear power plants has been a high-profile issue
since the 9/11 terrorist attacks on the United States in 2001. Since those attacks, NRC issued a
series of orders and regulations that substantially increased nuclear plant security requirements,
although industry critics contend that those measures are still insufficient.
Encouraging exports of U.S. civilian nuclear products, services, and technology while making
sure they are not used for foreign nuclear weapons programs has long been a fundamental goal of
U.S. nuclear energy policy. Recent proposals to build nuclear power plants in several countries in
the less developed world, including the Middle East, have prompted concerns that international
controls may prove inadequate.