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Kevin O’Leary Calls Small Nuclear the “Cheapest” Power for AI. Energy Economists Disagree.

Kevin O’Leary Calls Small Nuclear the “Cheapest” Power for AI. Energy Economists Disagree.
The Clarity Angle
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Kevin O’Leary claims small modular nuclear reactors are the cheapest power for AI data centers, but benchmark energy market data shows the opposite. Current estimates price new nuclear generation at roughly double the cost of utility-scale solar and wind, making it one of the most expensive power options available today.

Are Small Modular Reactors the Cheapest Power for AI Data Centers?

Small modular reactors, factory-built nuclear fission units designed to generate up to 300 megawatts of electricity, are among the most expensive power sources on the market today. Despite investor Kevin O’Leary promoting them as the cleanest and cheapest source of electricity available for data centers, independent energy benchmarks contradict his claim.

Financial advisory firm Lazard tracks this pricing through its Levelized Cost of Energy analysis, a standardized metric calculating the total lifetime cost of building and operating a power plant per unit of electricity generated. According to Lazard’s latest benchmarks, new nuclear generation costs between $175 and $255 per megawatt-hour.

Power Generation SourceLevelized Cost ($/MWh)Reliability / Uptime
Utility-Scale Solar$40 – $98Intermittent (Requires Storage)
Natural Gas (Combined Cycle)$51 – $129Baseload / Dispatchable
New Nuclear (SMR / Advanced)$175 – $255Baseload / 99.9% Uptime
Levelized Cost of Energy (Lazard Benchmarks) vs. Source Reliability

By comparison, Lazard finds utility-scale solar installations produce electricity for $40 to $98 per megawatt-hour, while natural gas combined-cycle facilities run between $51 and $129 per megawatt-hour. On a strict per-megawatt basis, new nuclear operates at a significant premium rather than a discount.

Why Did the Flagship U.S. Small Modular Reactor Project Collapse?

The premier commercial test case for small modular reactors in the United States fell apart when its projected electricity prices surged by more than 50 percent. That cost escalation highlighted the first-of-a-kind premium, the inflated capital expense required to engineer, license, and construct an unproven reactor design for the first time.

Led by utility consortium Utah Associated Municipal Power Systems (UAMPS) and reactor designer NuScale Power, the Carbon Free Power Project in Idaho originally targeted an electricity price of $58 per megawatt-hour.

By early 2023, public filings revealed that the estimated price had climbed to $89 per megawatt-hour. Without federal subsidies from the Inflation Reduction Act, the projected cost would have reached $120 per megawatt-hour.

UAMPS and NuScale canceled the project in late 2023 after municipal utilities refused to sign purchase contracts at those rates.

According to energy research consultancy Wood Mackenzie, constructing initial commercial modular reactors requires capital costs of up to $8,000 per kilowatt of capacity. Standard natural gas plants cost a fraction of that figure to build.

What Is Kevin O’Leary’s AI Energy Strategy?

O’Leary is shifting capital away from volatile artificial intelligence software equities into physical energy generation, betting that power shortages represent the tech sector’s true bottleneck.

His strategy focuses on funding long-term utility infrastructure in regions with historically low power costs, targeting the Canadian provinces of Alberta and Saskatchewan alongside several Nordic countries.

Can Renewables Match Nuclear Power’s Reliability for AI?

While solar and wind produce cheaper electricity per megawatt-hour, they cannot match nuclear power’s continuous 24/7 output without massive energy storage additions. Artificial intelligence data centers require 99.9 percent uptime, forcing developers to balance raw generation costs against round-the-clock reliability.

Energy policy organizations like the Clean Air Task Force note that operating computing clusters solely on intermittent renewables forces an overbuild of solar panels and battery banks. When utilities calculate the expense of firming intermittent supplies with battery storage to guarantee non-stop power, the price gap between renewables and nuclear narrows.

Nuclear stations generate uninterrupted baseload power, electricity delivered at a constant rate regardless of weather conditions. This reliability delivers system value to grid operators, and technology companies are paying a premium to secure it. That reliability premium proves that small modular reactors are dependable, not that they are cheap.

Who Pays the Extra Cost for Early Nuclear Reactors?

When early-stage nuclear projects face cost overruns, regulated utilities traditionally pass those capital expenses down to residential and commercial ratepayers. Unless tech companies sign binding power purchase agreements to fund the full construction premium, local utility consumers absorb the financial risk.

Under traditional utility regulation across the United States and Canada, state and provincial utility commissions allow power companies to recover capital investments through broad rate hikes. When power developers fail to lock commercial data centers into paying for construction overruns, households pick up the balance.

That dynamic has sparked legislative pushback over data center expansion. Federal lawmakers advanced the Ratepayer Protection Act to mandate that hyperscale data center operators fund the full incremental costs of their required transmission and generation upgrades. The legislation aims to prevent utilities from shifting industrial computing expenses onto household utility bills.

Without enforceable contracts forcing technology giants to pay the true first-of-a-kind cost for small modular reactors, the power fueling artificial intelligence may ultimately be subsidized by everyday electricity consumers.

Frequently Asked Questions

Are small modular reactors (SMRs) cheaper than traditional nuclear plants?

Not yet. While modular factory fabrication aims to lower expenses over time, early models carry first-of-a-kind capital costs reaching up to $8,000 per kilowatt according to Wood Mackenzie. Current benchmark data from Lazard places new nuclear generation between $175 and $255 per megawatt-hour, well above utility-scale solar and natural gas.

Why are AI data center companies pursuing nuclear power if costs are high?

Data centers demand 99.9 percent uptime, requiring constant baseload electricity that weather-dependent wind and solar cannot supply on their own. Adding utility-scale battery storage to firm up renewable sources increases their overall cost, making nuclear power’s round-the-clock reliability worth a premium for hyperscale operators.

What caused NuScale’s small modular reactor project in Idaho to collapse?

The Carbon Free Power Project, developed by NuScale Power and Utah Associated Municipal Power Systems, was terminated in late 2023 after its target price rose from $58 to $89 per megawatt-hour. Municipal utilities withdrew because power purchase costs would have hit $120 per megawatt-hour without federal subsidies.

What is the Ratepayer Protection Act?

The Ratepayer Protection Act is federal legislation designed to prevent tech companies from shifting data center power costs onto residential consumers. It requires operators of large computing facilities to pay the full incremental costs of new electricity generation and grid upgrades rather than letting utilities distribute cost overruns across public electricity bills.

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About the Author

Praseetha K

Investigative journalist and research analyst contributing independent field reports and structural analysis for Clarity Times.