# Small Nuclear Reactors are Coming --- Against All Odds

Source: https://www.youtube.com/watch?v=N1r_WPtqLp0
Recap page: https://rapidrecap.app/video/N1r_WPtqLp0
Generated: 2025-11-30T16:35:32.969+00:00

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## Quick Overview

Small Modular Reactors (SMRs) face significant challenges, including high costs, complex geometry requiring extensive shielding, and political uncertainty, despite recent regulatory approvals and global interest from entities like the European Commission, EDF, and the US Department of Energy.

**Key Points:**
- The Levelized Cost of Energy (LCOE) for SMRs, estimated at $89/MWh plus a $30/MWh subsidy, is potentially more expensive than standard nuclear power, which costs $89/MWh without subsidy.
- The geometry of smaller reactors increases the surface area, meaning more neutrons can escape, necessitating more shielding.
- Early industry projects, such as the NuScale Utah project and the EDF plan to build 30 SMRs by 2050, have experienced setbacks, including project cancellations due to rising costs.
- The Nuclear Energy Agency (NEA) dashboard shows 98 current SMR designs globally, with North America leading in designer headquarters (Figure 8), and the majority being water-cooled concepts (Figure 11).
- Regulatory progress is noted, with the US NRC approving NuScale's design in May 2025, and the European Commission inviting views on its SMR Strategy.
- The video highlights ongoing political enthusiasm, such as the UK planning to pioneer its first SMRs in North Wales and Sweden planning its first nuclear expansion in 50 years using mini-reactors.

![Screenshot at 00:36: A 3D rendering illustrates an SMR core \(SmAHTR design from Oak Ridge National Laboratory\) being transported on a flatbed truck, emphasizing the modular nature of these reactors.](https://ss.rapidrecap.app/screens/N1r_WPtqLp0/00-00-36.png)

**Context:** This news segment analyzes the current state and viability of Small Modular Reactors (SMRs) as a next-generation nuclear power source, contrasting the high hopes and regulatory progress with economic realities and technical hurdles. The presenter discusses figures from the NEA (Nuclear Energy Agency) and reports on recent developments from major players like NuScale, EDF, and government initiatives in the US, UK, and Sweden.

## Detailed Analysis

The video argues that while Small Modular Reactors (SMRs) are promoted as a great idea against all odds, several issues temper this enthusiasm. Initially, the presenter notes that the LCOE for SMRs, estimated by the company to be $89/MWh plus a $30/MWh subsidy, might still be more expensive than standard nuclear power ($89/MWh without subsidy). A key technical challenge is that smaller reactor geometry increases the surface area, leading to more neutron escape and requiring more shielding. Furthermore, early projects face hurdles: the NuScale Utah project was canceled in 2023 after costs exploded, and the original 2018 operational timeline for the B&W mPower project proved hypothetical. The video references the NEA's Third Edition SMR Dashboard, which shows 98 current designs, with North America having the most designer headquarters (Figure 8), and water-cooled designs being the most numerous (Figure 11). Despite these financial and geometric difficulties, political interest remains high, evidenced by the UK planning SMRs in North Wales, the EU inviting input on its SMR Strategy, and Sweden planning its first nuclear expansion in 50 years using mini-reactors. The video concludes by promoting Brilliant.org for learning skills related to critical thinking and problem-solving regarding these complex topics.

### SMR Promises vs. Reality

- Initial optimism fades as more is learned about SMRs
- The realized LCOE for SMRs, even with subsidies, may exceed standard nuclear costs
- Small geometry increases surface area, worsening neutron escape and shielding requirements

### Development Status and Design Diversity

- NEA lists 98 current SMR concepts, with water-cooled designs being the most common
- North America hosts the most SMR designer headquarters (Figure 8)
- Projects like NuScale's Utah site and B&W mPower faced cancellations or timeline failures

### Recent Political and Regulatory Milestones

- US NRC approved NuScale's US460 design in May 2025
- European Commission seeks input on its SMR Strategy
- EDF aims to produce 30 SMRs by 2050; Sweden plans nuclear expansion using mini-reactors

![Screenshot at 00:05: An illustration shows a large cylindrical nuclear component being transported on a flatbed truck, highlighting the modular shipping concept.](https://ss.rapidrecap.app/screens/N1r_WPtqLp0/00-00-05.png)
![Screenshot at 00:23: An animation shows a modular SMR component being assembled on a factory floor, referencing Rolls-Royce's involvement.](https://ss.rapidrecap.app/screens/N1r_WPtqLp0/00-00-23.png)
![Screenshot at 01:43: A visual display inside a nuclear facility shows the reactor core submerged in water, glowing bright blue due to Cherenkov radiation, illustrating the core's physical state.](https://ss.rapidrecap.app/screens/N1r_WPtqLp0/00-01-43.png)
![Screenshot at 02:41: A graphic displays the estimated LCOE for SMRs as $89/MWh plus a $30/MWh subsidy, contrasting with standard nuclear power costs.](https://ss.rapidrecap.app/screens/N1r_WPtqLp0/00-02-41.png)
![Screenshot at 03:41: A European Commission announcement calls for input to shape its Small Modular Reactor Strategy.](https://ss.rapidrecap.app/screens/N1r_WPtqLp0/00-03-41.png)