---
title: "Musk says small nuclear reactors 'super dumb'"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/269637235.md"
description: "Elon Musk criticized small nuclear reactors, calling them 'super dumb' in a tweet. He emphasized the Sun as a massive, free fusion reactor and argued against investing in tiny reactors on Earth, suggesting they are only suitable for science projects. Musk's comments imply a preference for solar energy solutions."
datetime: "2025-12-14T22:37:07.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/269637235.md)
  - [en](https://longbridge.com/en/news/269637235.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/269637235.md)
---

# Musk says small nuclear reactors 'super dumb'

Musk weighing in on nuclear reactors in a tweet:

-   _The Sun is an enormous, free fusion reactor in the sky. It is super dumb to make tiny fusion reactors on Earth._
-   _Even if you burned 4 Jupiters, the Sun would still round up to 100% of all power that will ever be produced in the solar system!!_
-   _Stop wasting money on puny little reactors, unless actively acknowledging that they are just there for your pet science project jfc._

\---

Musk's Grok is a huge energy suck. Sounds like his plan is to over the earth in solar panels?

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