Can America Turn Its Nuclear Power Back On?

America Never Completely Turned Nuclear Power Off

The first fact often lost in “nuclear revival” headlines is that the United States still operates the world’s largest commercial nuclear fleet. In 2024, 94 reactors with nearly 97 gigawatts of capacity produced about 19% of the nation’s electricity. These plants are not museum pieces. They are major grid assets that routinely generate power through nights, cloudy weeks, winter storms, and summer heat waves. sting fleet gives America an enormous head start. Building a clean power system from scratch is expensive. Keeping a safe, well-performing reactor online can be far less disruptive than replacing its annual output with a new combination of power plants, transmission lines, storage systems, and backup generation.

The most realistic nuclear strategy, therefore, does not begin with futuristic reactors shaped like silver doughnuts. It begins with maintaining the reactors already producing electricity, upgrading their equipment, improving their economics, and extending operating licenses where safety reviews support continued service.

Why Nuclear Power Is Back in the National Conversation

Electricity Demand Is Growing Again

For years, U.S. electricity consumption barely moved. Utilities could plan around slow growth and retire older plants without immediately replacing every megawatt. That comfortable era is fading. National electricity generation reached another record in 2025, while federal forecasts expect demand to keep rising. Data-center servers, cloud services, artificial intelligence, semiconductor manufacturing, electric vehicles, heat pumps, and new factories all want powerpreferably yesterday. lar, batteries, natural gas, hydroelectricity, geothermal energy, and efficiency will all matter. The problem is not choosing a single winner. The problem is building enough dependable capacity quickly enough. Nuclear power is attractive because a large reactor can provide steady, high-volume generation from a relatively compact site.

Technology Companies Want Firm, Low-Carbon Electricity

Long-term corporate power contracts are changing nuclear economics. Microsoft has supported the proposed restart of the former Three Mile Island Unit 1, now called the Crane Clean Energy Center. Google is backing plans to restart Iowa’s Duane Arnold Energy Center. Meta has entered a long-term agreement tied to continued operation of the Clinton nuclear plant in Illinois. mpanies are not suddenly sentimental about cooling towers. They need large quantities of reliable electricity and want to limit the carbon footprint of expanding computing operations. Their contracts can provide revenue certainty that merchant nuclear plants often lacked when inexpensive natural gas and uneven power-market rules squeezed profits.

Energy Security Has Become a Bigger Priority

Nuclear plants store substantial fuel on-site and are less exposed to daily fuel deliveries than gas or coal plants. That does not make them invulnerable, but it adds diversity to the grid. A system with multiple fuel types, regional resources, storage, demand response, and strong transmission is generally more resilient than a system betting everything on one technology.

The Three Ways America Can Bring Nuclear Capacity Back

1. Keep Existing Reactors Operating Longer

License renewal may be the least glamorous part of the nuclear comeback, but it may deliver the most electricity. U.S. reactors originally received 40-year licenses. Many have been renewed for 60 years, and the Nuclear Regulatory Commission has developed a process for subsequent renewals that can allow operation for up to 80 years, subject to detailed aging-management, safety, and environmental reviews. g a reactor’s life is not permission to coast. Operators must inspect metal, concrete, cables, pipes, pumps, pressure boundaries, emergency systems, and other components affected by decades of heat, radiation, vibration, corrosion, and ordinary wear. The economic question is whether those upgrades cost less than replacing the plant’s dependable output. In many regions, the answer may be yes.

2. Restart Carefully Selected Closed Plants

Palisades in Michigan is the leading test case. The plant stopped operating in May 2022, but its owner later began pursuing a restart supported by a federal loan guarantee of up to $1.52 billion. The project requires extensive Nuclear Regulatory Commission review and inspections because returning a reactor from decommissioning status to operation is a first-of-a-kind process in the United States. As of 2026, the regulatory and inspection process was continuing, so the restart remained subject to federal approval. ean Energy Center in Pennsylvania presents another important case. Its Unit 1 reactor closed in 2019 for economic reasons and is separate from the damaged Unit 2 involved in the 1979 accident. Constellation is seeking approvals to restore Unit 1, supported by a 20-year agreement with Microsoft. The NRC was still holding public meetings and reviewing the proposed restart in July 2026. nold in Iowa, which stopped operating in 2020, is also moving through a potential restart process. NextEra Energy has said the roughly 615-megawatt plant could return in the late 2020s, with a long-term Google agreement supporting the plan. None of these projects proves that every closed reactor should reopen. They do show that plants retired for economicsnot catastrophic equipment failuremay retain valuable sites, transmission access, cooling systems, buildings, and skilled regional workforces. ld New Reactors Without Repeating Old Mistakes

Plant Vogtle Units 3 and 4 in Georgia demonstrate both the reward and the warning. The two AP1000 reactors entered commercial operation in 2023 and 2024, adding more than 2,200 megawatts of generating capacity. They can serve customers for many decades and turned Vogtle into the nation’s largest clean-energy generating site. project also cost about $30 billion in total and arrived years later than originally planned. That is the nuclear industry’s awkward family photo: impressive achievement in the center, painful schedule and cost history standing beside it. on is not simply “never build large reactors.” It is that one-off megaprojects, incomplete designs, fragile supply chains, contractor turnover, financing costs, and stop-start construction are a terrible recipe. Future projects need completed designs, experienced teams, repeat orders, disciplined project management, factory production where practical, and risk-sharing arrangements that do not dump every surprise onto electricity customers.

What Could Stop the Nuclear Comeback?

High Capital Costs and Long Timelines

Nuclear fuel is compact and operating costs can be stable, but construction requires enormous up-front investment. Every year of delay adds financing expense before the plant sells a single kilowatt-hour. A reactor may be economically attractive over 60 years and still be nearly impossible to finance during its first decade.

Restart projects can be faster than new construction, but they are not cheap shortcuts. Components age while plants are closed. Documentation must be updated. Employees must be hired and trained. Emergency plans, cybersecurity programs, security forces, spare parts, grid studies, and maintenance systems all have to be rebuilt or restored.

A Thin Supply Chain and Workforce

America cannot order dozens of reactors with a supply chain designed to build one every few decades. Nuclear-grade forgings, valves, pumps, control systems, specialized concrete work, quality-assurance programs, welders, inspectors, operators, and engineers must all scale together.

The industry also faces a human-capital challenge. Experienced workers are retiring, while new projects need people who understand both modern digital systems and old analog equipment. Training cannot be compressed into a weekend webinar titled “Become a Reactor Operator Before Monday.”

Waste Policy Remains Unfinished

The United States has accumulated more than 90,000 metric tons of commercial spent nuclear fuel and still lacks a permanent geologic repository. Used fuel is stored securely in pools and dry casks at reactor sites, but “we will keep it here until Congress figures something out” is not a complete national policy. le expansion strategy needs consent-based siting, interim storage where communities agree, reliable transportation systems, and a durable path to permanent disposal. Nuclear advocates sometimes treat waste as a small-volume engineering problem. Critics treat it as proof that the technology has no future. In reality, it is a manageable technical challenge trapped inside a long-running political failure.

Public Trust Cannot Be Manufactured

Communities are more likely to support a project when developers arrive early, explain risks honestly, publish understandable data, fund independent expertise, and answer difficult questions without acting offended that anyone asked. Safety regulation must remain rigorous even when policymakers want faster decisions.

Speed should come from clearer rules, better staffing, standardized designs, and earlier coordinationnot from pretending that oversight is decorative. The Nuclear Regulatory Commission’s job is not to cheerlead. Its job is to determine whether a reactor can operate safely. A trustworthy comeback depends on that distinction.

A Practical Road Map for Turning Nuclear Power Back On

1. Prevent avoidable closures. Value reliable, low-carbon generation in electricity markets and use temporary support only when plants are otherwise safe and economically recoverable.
2. Prioritize life extensions and power uprates. Adding years or modest capacity to proven sites can deliver electricity sooner than greenfield construction.
3. Restart only strong candidates. Favor plants with intact equipment, preserved documentation, available transmission, community support, qualified owners, and credible customers.
4. Standardize new construction. Build repeatable designs in sequences rather than launching isolated national science projects disguised as utility investments.
5. Expand domestic fuel and component capacity. A nuclear strategy without a supply-chain strategy is just a very expensive mood board.
6. Solve grid rules for large new loads. Data-center agreements must not quietly shift transmission or reliability costs to ordinary customers. Federal regulators have already warned that nuclear and data-center co-location can affect grid reliability and consumer costs. ong>Make waste policy real. Establish consent-based facilities and a permanent disposal path with stable federal responsibility.

Federal Policy Is HelpingBut It Cannot Do Everything

Washington has created several forms of support for existing and future nuclear generation. The Civil Nuclear Credit Program helped create a path for continued operation at California’s Diablo Canyon plant, while the zero-emission nuclear production credit under Section 45U can support qualifying existing reactors through 2032. The ADVANCE Act also directed the NRC to improve licensing efficiency while maintaining its safety and security responsibilities. loans, credits, and regulatory reforms can reduce risk, but they cannot repair defective equipment, manufacture missing components, or create an experienced workforce by legislative declaration. Public support should be linked to measurable milestones, transparent budgets, independent oversight, and protections for customers and taxpayers.

The goal should not be to subsidize every reactor forever. It should be to overcome first-of-a-kind barriers, preserve valuable assets during temporary market failures, and help the industry reach a point where repeat projects can compete without requiring a fresh rescue package each time someone pours concrete.

So, Can America Turn Its Nuclear Power Back On?

Yesbut not all at once, not everywhere, and not by nostalgia. The strongest near-term opportunity is to protect the existing fleet, extend safe operating lives, complete carefully chosen restart projects, and increase output at established sites. New reactors can follow, but only if the industry proves it can control costs, repeat designs, rebuild supply chains, and deliver projects on schedules measured in years rather than geological eras.

Nuclear power is not a substitute for renewables, storage, transmission, efficiency, or flexible demand. It is one tool in a much larger power-system toolbox. The United States will need nearly all of those tools as electricity demand rises and aging fossil plants retire.

The comeback will be judged less by speeches about a “nuclear renaissance” than by boring, measurable results: safe inspections, trained crews, completed repairs, predictable construction, fair customer costs, functioning waste policy, and reactors that actually send electricity to the grid. In energy, as in life, turning something back on matters only if it stays on.

Experience Lessons From America’s Recent Nuclear Projects

Recent U.S. experience offers a useful reality check. First, preserving an operating plant is usually easier than resurrecting a closed one. Diablo Canyon in California was scheduled for retirement, but state and federal actions created a path for continued operation. Whatever one thinks of the politics, the practical lesson is obvious: once a plant dismisses staff, cancels contracts, dismantles systems, and transfers equipment into decommissioning, reversal becomes slower and more expensive. Decisions about closure should therefore compare the full replacement costnot merely the plant’s next maintenance bill. restart projects reward owners who preserved information and equipment. A nuclear plant is a physical machine wrapped in a vast knowledge system: drawings, test records, maintenance histories, calculations, procedures, training programs, supplier qualifications, and licensing commitments. Losing that institutional memory can be as damaging as losing a pump. Palisades, Crane, and Duane Arnold are demonstrating that documentation management during shutdown may determine whether a future restart remains possible.

Third, long-term customers can convert an uneconomic plant into a financeable one. Merchant reactors struggled when wholesale prices were low and markets did not fully reward dependable, carbon-free capacity. Contracts with Microsoft and Google offer a different model: a large buyer commits for decades, giving the operator confidence to spend heavily on restoration. The experience also raises a fairness question. Regulators must ensure that private computing loads pay their share of transmission, backup, and reliability costs instead of handing the neighborhood a surprise bill.

Fourth, Vogtle shows that completion has enormous value but poor execution has enormous consequences. The new units now deliver round-the-clock power and will likely operate for generations. Yet their cost and delay damaged confidence across the industry. Future builders should reuse designs, retain experienced crews, freeze engineering before major construction, and avoid treating the first project as both prototype and commercial product. Repetition is not boring in infrastructure; repetition is how bridges, airplanes, and power plants become affordable.

Fifth, community relationships are operational assets. Local support cannot replace federal safety review, but opposition can delay permits, increase legal costs, and erode political durability. Communities hosting nuclear facilities often understand both the benefits and the risks better than distant commentators. Jobs, tax revenue, emergency planning, water use, environmental monitoring, and waste storage should be discussed with specific numbers and enforceable commitments.

Finally, nuclear projects punish wishful thinking. Optimistic schedules may win headlines, but realistic schedules win credibility. The most successful comeback will not be the one announcing the largest number of reactors. It will be the one that safely returns dependable megawatts, protects customers, trains workers, and creates a repeatable process. America can turn more nuclear power back on, but experience says the switch is labeled “engineering discipline,” not “hype.”