Exploring the Potential of Small Modular Reactors (SMRs) for Industrial Power Generation in Illinois

Illinois has a deeper relationship with nuclear energy than any other state in America. With eleven operating reactors across six sites, nuclear power generates approximately 50% of the state's electricity—more than any other source. That nuclear foundation, combined with a skilled workforce, established regulatory infrastructure, and aggressive clean energy goals under the Climate and Equitable Jobs Act (CEJA), makes Illinois uniquely positioned for the next evolution in nuclear technology: small modular reactors.

For energy-intensive industrial facilities across Illinois—steel mills, chemical plants, data centers, large manufacturers, and food processors—the promise of SMRs is compelling. Imagine a compact, factory-built nuclear power plant that sits on your property, generates 50-300 megawatts of clean, reliable, baseload electricity for 40-60 years, operates with passive safety systems that require no emergency cooling pumps, and produces zero carbon emissions. That is not science fiction. It is an advanced nuclear for business solution that is working its way through the NRC licensing pipeline right now.

But let's be honest about the timeline and the challenges. No commercial SMR is operating in the United States today. Cost estimates remain uncertain. The regulatory pathway, while advancing, has never been fully completed for a commercial industrial deployment. And the upfront capital requirements are substantial, even by industrial standards.

This guide takes a clear-eyed look at the opportunity. We will explain what SMRs are and how they work, detail the specific ways they could benefit Illinois industrial operations, map the regulatory and financial landscape, and provide practical next steps for facilities that want to position themselves for early adoption.

Beyond the Grid: What Are SMRs and Why Should Illinois Businesses Be Paying Attention?

The nuclear power plants that dot the Illinois landscape—Byron, Braidwood, Dresden, LaSalle, Clinton, and Quad Cities—are engineering marvels. Each reactor generates 800-1,200 megawatts of continuous power. But their massive scale is also their limitation. They cost $10-$15 billion to build, take a decade or more to construct, and serve as centralized grid assets rather than distributed industrial power sources.

SMRs represent a fundamentally different approach to nuclear energy.

What Makes an SMR "Small" and "Modular"

The defining characteristics that distinguish SMRs from conventional nuclear plants:

• Size. SMRs generate up to 300 MW per module, compared to 1,000+ MW for conventional reactors. Many designs target the 50-100 MW range—perfectly sized for large industrial facilities or campus installations.
• Modular construction. SMR components are manufactured in a factory and shipped to the site for assembly. This contrasts with conventional plants, where most construction happens on-site over many years. Factory fabrication promises better quality control, shorter construction timelines (3-5 years versus 10-15 years), and lower costs through learning-curve efficiencies.
• Scalability. Need more power? Add another module. Most SMR designs support multi-module installations, allowing facilities to scale capacity as demand grows.

The Technology Landscape in 2026

The SMR industry is moving from design to deployment across several technology platforms:

Developer	Design	Type	Output	Status
NuScale Power	VOYGR	Light water	77 MW per module	NRC design certified (2023)
TerraPower	Natrium	Sodium-cooled fast reactor	345 MW	Under construction in Wyoming
X-energy	Xe-100	High-temperature gas	80 MW per module	NRC review in progress
Kairos Power	Hermes	Fluoride salt-cooled	35 MW (demo)	Construction permit issued
GE Hitachi	BWRX-300	Boiling water	300 MW	NRC review in progress

For Illinois specifically, the light water designs (NuScale, GE Hitachi) offer the most straightforward regulatory pathway because they use technology most similar to the existing Illinois fleet. However, advanced designs like TerraPower's Natrium and X-energy's Xe-100 offer unique advantages for industrial applications, particularly process heat.

Why Illinois Is Positioned to Lead

Several factors make Illinois the ideal proving ground for industrial SMR deployment:

• Nuclear workforce. Illinois employs thousands of nuclear engineers, operators, and maintenance professionals. This talent pool significantly reduces the workforce challenge that other states would face.
• Regulatory familiarity. The Illinois Emergency Management Agency has decades of experience with nuclear emergency planning, and state regulators understand nuclear technology in ways that officials in non-nuclear states do not.
• Grid infrastructure. Illinois's transmission network is built to handle large nuclear generation sources, and the PJM and MISO market structures can accommodate distributed nuclear generation.
• Policy alignment. CEJA's clean energy mandates create market demand for zero-carbon generation, and nuclear qualifies as a clean energy source under federal policy.

The U.S. Department of Energy's Office of Nuclear Energy provides comprehensive updates on SMR technology development and federal support programs.

Powering Profitability: 3 Ways SMRs Can Revolutionize Industrial Energy Costs & Reliability in Illinois

For Illinois industrial facilities evaluating their long-term energy strategy, SMRs offer three distinct advantages that no other single technology can match.

Way 1: Unmatched Baseload Reliability

Industrial operations need power that is available 24 hours a day, 365 days a year. Planned and unplanned outages directly impact production, revenue, and customer commitments. Here is how SMRs compare to alternatives on reliability:

• SMR capacity factor: 90-95% (based on conventional nuclear fleet performance). This means an SMR delivers power more than 90% of all hours in a year.
• Natural gas CHP capacity factor: 80-90%, subject to fuel supply disruption, maintenance downtime, and equipment degradation.
• Solar capacity factor in Illinois: 15-20%. Intermittent and zero output at night.
• Wind capacity factor in Illinois: 30-40%. Intermittent and unpredictable.
• Grid power from ComEd or Ameren: 99.9%+ availability, but subject to price volatility, transmission congestion, and occasional severe weather outages.

For facilities where even a few hours of power interruption costs hundreds of thousands of dollars—data centers, continuous process manufacturers, cold storage operations—SMR reliability is a significant competitive advantage.

Way 2: Price Stability and Long-Term Cost Predictability

Illinois industrial facilities on market-based electricity pricing have experienced dramatic price volatility. The polar vortex of 2019, the summer heat events of 2023 and 2024, and ongoing transmission congestion in the PJM market have all produced price spikes that devastated energy budgets.

An on-site SMR fundamentally changes this dynamic:

• Fixed fuel cost. Nuclear fuel (enriched uranium) represents only 10-15% of the total cost of nuclear electricity, compared to 60-80% for natural gas generation. This means nuclear electricity prices are largely insulated from commodity market swings.
• Predictable operating costs. Once built, an SMR's operating and maintenance costs are highly predictable and escalate slowly—typically at or below inflation.
• 40-60 year asset life. Unlike solar panels (25-30 year life), gas turbines (20-30 year life), or battery storage (10-15 year life), an SMR provides power for four to six decades, spreading capital costs over a much longer period.

Illustrative levelized cost comparison for Illinois industrial power:

Source	Levelized Cost ($/MWh)	Price Stability	Carbon Emissions
SMR (projected, nth unit)	$50-$80	Very high	Zero
Natural gas CHP	$45-$75	Moderate (fuel dependent)	~400 kg CO2/MWh
Grid power (PJM average)	$40-$90+	Low (market dependent)	~350 kg CO2/MWh
Solar + storage	$55-$90	High (after build)	Zero
Wind + storage	$50-$85	High (after build)	Zero

Way 3: Industrial Decarbonization Without Compromise

The most powerful value proposition of SMRs for Illinois industry is their ability to deliver industrial decarbonization without sacrificing reliability, cost competitiveness, or operational flexibility.

Many industrial processes require not just electricity but also process heat—steam, hot water, or direct thermal energy at temperatures ranging from 200°F to 1,500°F. Advanced SMR designs can provide this heat directly:

• Light water SMRs (NuScale, GE Hitachi) produce steam at 500-600°F, suitable for many food processing, chemical, and pharmaceutical applications.
• High-temperature gas reactors (X-energy Xe-100) produce heat at 1,300°F+, suitable for hydrogen production, steel processing, and chemical manufacturing.
• Molten salt reactors (Kairos, Terrestrial Energy) operate at 1,100-1,300°F with thermal storage capability.

For Illinois facilities that currently rely on natural gas boilers for process heat, an SMR could eliminate both electricity-related and thermal-related carbon emissions in a single investment—something that solar, wind, and battery storage simply cannot do.

For current on-site generation options available today, see our guide on CHP and cogeneration for Illinois industrial facilities.

The Illinois SMR Roadmap: Navigating the Regulatory, Financial, and Safety Landscape

Understanding the practical pathway to SMR deployment is essential for Illinois businesses considering this technology. The landscape is complex but navigable.

The Regulatory Framework

Nuclear facility licensing in the United States is governed by the Nuclear Regulatory Commission (NRC), the independent federal agency responsible for ensuring the safe use of nuclear materials. The licensing process for SMRs involves several major milestones:

1. Design Certification. The NRC reviews and certifies the reactor design itself, independent of any specific site. NuScale achieved this milestone in 2023. Several other designs are in the pipeline.
2. Early Site Permit (ESP). A potential site can be pre-approved for nuclear construction before a specific reactor design is selected. This step evaluates seismology, hydrology, demographics, and emergency planning considerations.
3. Combined License (COL). This combines the construction permit and operating license into a single proceeding, reducing the two-step process that plagued earlier nuclear projects. The NRC is also developing a new Part 53 licensing framework specifically designed for advanced reactor technologies, which should streamline the process further.

Timeline reality check: Even under the most optimistic scenarios, an Illinois industrial facility pursuing an on-site SMR today would likely not begin operating the unit until the early 2030s at the earliest. The NRC review process, construction, fuel loading, and testing take time. However, early engagement with the process provides significant advantages in site selection, workforce development, and financial planning.

The Financial Landscape

SMR economics are evolving rapidly, driven by federal policy support, private investment, and manufacturing scale-up:

Federal support mechanisms:

• Production Tax Credits (PTCs). The Inflation Reduction Act provides a PTC of up to $25/MWh for nuclear generation, significantly improving SMR project economics.
• Investment Tax Credits (ITCs). Alternative to the PTC, the ITC can cover up to 30% of project costs, with additional bonuses for domestic content and energy communities.
• DOE Loan Programs. The Department of Energy's Loan Programs Office has authorized billions in loan guarantees for advanced nuclear projects, reducing financing costs.
• Advanced Reactor Demonstration Program (ARDP). DOE cost-share agreements are funding first-of-a-kind SMR deployments, with TerraPower's Natrium project receiving over $2 billion in federal support.

Financing structures for industrial adopters:

Illinois businesses would not necessarily need to own an SMR outright. Several business models are emerging:

• Power Purchase Agreement (PPA). A third-party developer builds, owns, and operates the SMR. Your facility purchases power under a long-term contract at a fixed price, similar to solar PPAs.
• Build-Own-Operate-Transfer (BOOT). The developer builds and operates the SMR for a defined period, then transfers ownership to the industrial customer.
• Consortium model. Multiple industrial facilities in a geographic area jointly contract for an SMR, sharing the output and the costs.

Safety: The Non-Negotiable Foundation

Safety concerns are the first question most people raise about nuclear power, and rightfully so. Modern SMR designs address historical safety vulnerabilities through fundamentally different engineering approaches:

• Passive safety systems. SMRs use natural physical phenomena—gravity, natural convection, compressed gas—to cool the reactor in an emergency. No pumps, no external power, no operator action required. If all systems fail and all operators walk away, the reactor safely shuts itself down.
• Below-grade installation. Many SMR designs are installed partially or fully underground, providing inherent protection against external threats.
• Reduced fuel inventory. Smaller reactors contain less nuclear fuel, which means less stored energy to manage during any abnormal condition.
• Factory quality control. Manufacturing reactor components in a controlled factory environment produces more consistent quality than field construction, reducing the risk of construction defects.

The Union of Concerned Scientists provides independent analysis of advanced nuclear safety claims, offering a balanced perspective for business decision-makers.

Is Your Facility Future-Ready? Next Steps for Exploring SMR Adoption and Securing Your Energy Future

You don't need to commit to building an SMR today. But if your facility has a 10-20 year energy planning horizon—and most industrial operations do—now is the time to begin positioning.

Step 1: Assess Your Energy Profile and SMR Fit

Not every Illinois industrial facility is a good candidate for an on-site SMR. The best candidates share several characteristics:

• High baseload demand. Facilities consuming 25+ MW of continuous power are the most natural fit for SMR economics.
• Process heat requirements. If your operations require significant steam or thermal energy, an SMR that provides both electricity and heat delivers maximum value.
• Long planning horizon. Facilities with 20+ year operational commitments can spread SMR capital costs over the asset's full life.
• Decarbonization mandates. Companies facing customer, regulatory, or investor pressure to eliminate carbon emissions will find SMRs among the few options that can fully decarbonize industrial operations.
• Suitable site characteristics. Adequate acreage, compatible zoning, access to cooling water, and appropriate distance from population centers.

Step 2: Engage with the Emerging Ecosystem

The SMR industry is building its commercial ecosystem now, and early engagement positions your business favorably:

• Contact SMR developers directly. Companies like NuScale, X-energy, and GE Hitachi are actively seeking industrial partners and early adopters. Initial conversations are typically covered under NDA and involve no financial commitment.
• Engage with the Illinois nuclear community. Organizations like the Nuclear Energy Institute and the Illinois chapter of the American Nuclear Society connect potential customers with developers, regulators, and financiers.
• Participate in DOE programs. The Department of Energy regularly solicits input from potential industrial users to shape SMR development priorities and licensing frameworks.
• Monitor NRC proceedings. Following the NRC's Part 53 rulemaking and individual design certifications will give you early visibility into which technologies are closest to commercial readiness.

Step 3: Bridge the Gap with Available Technology

The years between now and commercial SMR availability should not be wasted. Illinois industrial facilities can take concrete steps today that both reduce current costs and prepare for a future SMR deployment:

• Implement energy efficiency upgrades to reduce your baseload demand, which right-sizes the eventual SMR capacity needed.
• Deploy CHP or cogeneration as a bridge technology that provides on-site generation experience, reduces grid dependence, and cuts emissions today.
• Install advanced metering and energy management systems to build the detailed load profile data that will be essential for SMR sizing and economic analysis.
• Evaluate your site for nuclear suitability, including seismic, hydrological, and demographic assessments that can begin years before a licensing application.

For more on how grid modernization and emerging technologies are shaping Illinois's energy future, see our guide on future grid modernization and smart grid technology for Illinois businesses.

Conclusion: Nuclear's Next Chapter Is Industrial, and Illinois Is Writing It

The history of nuclear power in America is largely a history of massive, centralized utility-scale plants built to serve millions of customers through the grid. That model delivered enormous amounts of clean, reliable power—and Illinois benefited more than any other state. But it also produced the cost overruns, construction delays, and concentrated risk that gave nuclear a complicated reputation.

SMRs represent a different chapter. Smaller. Modular. Factory-built. Passively safe. Designed not just for utilities but for industrial facilities that need reliable, clean, affordable power on their own terms. For Illinois small modular reactors to become a reality for industrial users, the technology, the regulation, and the financing all need to continue advancing—and they are.

The question for Illinois industrial leaders is not whether SMRs will eventually be available. The NRC-certified designs, the billions in federal funding, and the global momentum make that a near-certainty. The question is whether your facility will be ready when they arrive.

Readiness means understanding the technology and its fit for your operations. It means building relationships with developers and regulators. It means implementing the efficiency and monitoring upgrades today that will make an SMR investment more economically attractive tomorrow. And it means maintaining the flexibility in your Illinois clean energy strategy to adopt transformative technologies when the timing is right.

Illinois's nuclear heritage, skilled workforce, regulatory infrastructure, and clean energy policy framework give the state a decisive advantage in the SMR era. The industrial facilities that recognize this advantage and begin planning now will secure the most favorable positions—in site selection, in developer partnerships, in regulatory engagement, and ultimately in the cost and reliability of their power supply for decades to come.

Want to understand how SMR technology fits into your facility's long-term energy strategy? Contact us for a free energy planning consultation. We will assess your load profile, evaluate your site characteristics, and help you build a phased strategy that delivers savings today while positioning your Illinois facility for the clean energy technologies of tomorrow.