--- title: "With a new $100M raise, Princeton’s Thea Energy is now a top-funded fusion startup" url: https://daily.dev/posts/with-a-new-100m-raise-princeton-s-thea-energy-is-now-a-top-funded-fusion-startup-ia9behspk source_url: https://techcrunch.com/2026/05/27/with-a-new-100m-raise-princetons-thea-energy-is-now-a-top-funded-fusion-startup type: article source: "TechCrunch" published: 2026-05-27T17:56:55.581Z updated: 2026-05-27T18:01:10.506Z reading_time: 3 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # With a new $100M raise, Princeton’s Thea Energy is now a top-funded fusion startup **[TechCrunch](https://daily.dev/sources/tc)** · 3 min read · 0 upvotes · 0 comments ## Summary Thea Energy has closed a $100M Series B led by U.S. Innovative Technology Fund, bringing total private investment to $130M. The Princeton spinout is developing a stellarator fusion reactor using a novel 'pixel-inspired' planar coil magnet design, where hundreds of smaller, software-tunable rectangular magnets collectively shape the magnetic field — simplifying manufacturing compared to traditional stellarator designs. The funding will support expansion of magnet manufacturing and construction of its Eos demonstration device starting in 2027, with a commercial Helios reactor targeted for 2034. However, the design has evolved to rely on 12 larger external magnets for primary plasma confinement, with the planar coils now serving a fine-tuning role, partially reducing the original manufacturing advantage. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Thea Energy lands $20M federal grant to build its magnets for fusion reactors](https://daily.dev/posts/thea-energy-lands-20m-federal-grant-to-build-its-magnets-for-fusion-reactors-spb29zsmh) · TechCrunch · 0 upvotes · 0 comments - [Thea Energy previews Helios, its pixel-inspired fusion power plant](https://daily.dev/posts/thea-energy-previews-helios-its-pixel-inspired-fusion-power-plant-4vgvhxd09) · TechCrunch · 1 upvotes · 0 comments - [Every fusion startup that has raised over $100M](https://daily.dev/posts/every-fusion-startup-that-has-raised-over-100m-kcyzaogsi) · TechCrunch · 0 upvotes · 0 comments - [Every fusion startup that has raised over $100M](https://daily.dev/posts/every-fusion-startup-that-has-raised-over-100m-5za747xzd) · TechCrunch · 0 upvotes · 0 comments - [The race to build a star on Earth](https://daily.dev/posts/the-race-to-build-a-star-on-earth-tcceissoh) · TechCentral · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/with-a-new-100m-raise-princeton-s-thea-energy-is-now-a-top-funded-fusion-startup-ia9behspk)