You asked about Energy
9 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2024-06-01 | YCautarc autarc is the agentic OS for energy installers. · autarc.energy | still up |
| 2024-09-01 | YCCuro Electric fleets park and charge anywhere with Curo · curocharging.com | still up |
| 2024-06-01 | YCSilurian Foundation models to simulate Earth, starting with weather. · silurian.ai | still up |
| 2024-01-01 | YCSpark AI-powered workflows for energy infrastructure · sparkhq.ai | still up |
| 2024-06-01 | YCIonworks Simulation software used by leading battery and automotive companies · ionworks.com | still up |
| 2024-06-01 | YCPlume Renewable infrastructure deployment at scale. · plumefinder.com | still up |
| 2024-01-01 | Batteries and solar for $0 upfront to help businesses save money · vistapower.com | still up |
| 2024-06-01 | YCRewbi A stealth mode startup. · rewbi.com | still up |
| 2024-06-01 | Energy efficient chips for AI · zscc.ai | still up |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
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.