Nuclear Power Costs Have Declined With Standardization
A new report identifies existing nuclear plants as the lowest-cost option for electricity generation among peers.
Updated on Sept. 21, 2026 in Energy
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The OECD Nuclear Energy Agency and the Electric Power Research Institute have released a report evaluating the costs of 23 energy technologies. Existing nuclear power plants provide the lowest mean and median levelized cost of electricity, ranging from $39 to $64 per MWh.
Why it matters
The findings highlight how design standardization and repeated project approvals can significantly reduce the levelized cost of electricity. These efficiencies are essential for reaching the goal of providing round-the-clock carbon-free energy at less than $100 per MWh.
The study analyzed 23 technologies, finding that nuclear, hydro, onshore wind, and solar photovoltaic options can fall under $100 per MWh. Existing nuclear plants currently lead in cost efficiency compared to emerging project categories.
The players
OECD Nuclear Energy Agency
This intergovernmental agency facilitates cooperation among countries with advanced nuclear technology infrastructures to seek excellence in nuclear safety and policy.
Electric Power Research Institute
This independent, non-profit organization conducts research, development, and demonstration projects for the electricity sector.
The details
First-of-a-kind projects often face higher expenses driven by supply chain constraints, workforce shortages, and a lack of construction experience. Conversely, increased capacity factors help lower costs for nuclear, coal, and gas facilities.
Timeline
The findings were published in the 2025 report on electricity generation costs.
The Big Picture
This research provides a foundational benchmark for global energy policy, following the methodology established by The Costs of Generating Electricity 2025 report. It effectively shifts the discourse from theoretical potential to measurable, nth-of-a-kind economic viability.
As nth-of-a-kind reactor designs become more standard, consumers may see more stable, carbon-free electricity pricing over the long term. These findings provide a roadmap for the commercialization of modular reactors that could eventually lower utility infrastructure costs.
The takeaway
Standardization is the primary driver for bringing future nuclear energy costs below the $100 per MWh threshold. Policymakers and industry leaders must prioritize consistent project approvals to overcome the initial cost hurdles of new technologies.
Further reading
For more background on this sector, explore our Energy section.
Source note: This article includes information reported by Ans.
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