You asked about Fusion Energy

22 people built something like it. 3 are gone.

That is 14% of the ones whose fate we could settle, against 23% across the whole register. 1 were acquired.

Matching
23
Gone
14%
Median life
Acquired
1

Matching launches

checked 11 hours ago · 250 probed today
LaunchedWhat it wasToday
2023-02-28
scribblediffusion.com
moved
2016-01-01
AI + Robotics for the Built World · geckorobotics.com
still up
2022-09-08
tattoosai.com
still up
2018-06-01
AI Platform for Efficient and Sustainable Operations · tenderd.com
still up
2022-06-01
Agentic AI for Power Projects and AI Infrastructure · paces.com
still up
2022-01-01
Traceable AI for billion-dollar infrastructure. · korrai.com
still up
2020-01-01
AI powered sensors that save energy, water and emissions · powerx.co
acquired
2021-06-01
Nuclear-inspired cooling that turns wasted power into more AI compute · ferveret.com
still up
2022-01-01
AI-driven HVAC control system for improved energy performance · axross.co
still up
2023-01-23
freyja.software
still up
2023-06-01
Manage energy cost & usage with AI for facility & sustainability teams · nectarclimate.com
still up
2019-01-01
AI driven professional engineering firm · traverse.ai
gone
2022-06-01
Claim solar incentives with AI · jasmine.energy
gone
2026-06-01
AI-Native Engineering Firm designing Data Centers · marengox.com
still up
2024-01-01
AI-powered workflows for energy infrastructure · sparkhq.ai
still up
2026-01-01
AI agents for power grid planning 🦑 · squid.energy
still up
2023-06-01
AI Energy Management · trycardinal.ai
gone
2024-06-01
Energy efficient chips for AI · zscc.ai
still up
2025-01-01
AI-native remote operations center for hardware fleets · dartboard.ai
still up
2026-01-01
Real-time Physics Simulations for Industrial Facilities & Data Centers · inviscidai.com
still up
2026-01-01
The first AI-powered uranium discovery company · terranox.ai
still up
2026-06-01
AI That Operates Energy Infrastructure · edviroenergy.com
still up
2025-01-01
The world’s first AI energy developer · astroenergy.ai
still up

How this compares

Where they launched

share gone · line is the 23% average
  1. Show HN 20%
  2. Y Combinator 1916%

Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.

How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.