You asked about Solar Power
299 people built something like it. 34 are gone.
That is 13% of the ones whose fate we could settle, against 23% across the whole register. 30 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2015-06-01 | YCOolu Oolu is one of the fastest growing off-grid solar firms in West Africa · oolusolar.com | acquired |
| 2022-01-01 | YCRemi Simplifying roofing for homeowners, roofers and enterprises. · remihq.com | still up |
| 2018-06-01 | YCMomentus The space infrastructure services company · momentus.space | acquired |
| 2015-01-01 | YCBright Sunrun for the developing world · thinkbright.mx | still up |
| 2016-06-01 | Raptor Maps builds software to manage the solar PV lifecycle. · raptormaps.com | still up |
| 2021-06-01 | Home electrification at $0 upfront cost · solarmente.es | gone |
| 2023-01-01 | YCRUUF Managed marketplace for solar in Latam · ruuf.cl | still up |
| 2017-06-01 | Sunfolding builds next generation infrastructure for solar farms. By… · sunfolding.com | gone |
| 2022-01-01 | Software to prevent downtime in a solar plant · smarthelio.com | still up |
| 2019-01-01 | We use solar and wind power to make zero net carbon electrofuels · prometheusfuels.com | still up |
| 2021-06-01 | Robots that build solar farms · chargerobotics.com | still up |
| 2022-01-01 | Software to find the best sites for renewables on the electrical grid · niraenergy.com | still up |
| 2015-06-01 | Reliable and affordable solar energy in developing countries. · sunfarmer.org | still up |
| 2023-01-01 | YCCoperniq Workflow software for solar & energy contractors ☀️😎 · coperniq.io | still up |
| 2022-06-01 | Claim solar incentives with AI · jasmine.energy | gone |
| 2024-01-01 | YCSpark AI-powered workflows for energy infrastructure · sparkhq.ai | still up |
| 2024-06-01 | YCPlume Renewable infrastructure deployment at scale. · plumefinder.com | still up |
| 2026-01-01 | Energy independent data centers with solar and repurposed batteries. · voxelenergy.com | still up |
| 2024-01-01 | Batteries and solar for $0 upfront to help businesses save money · vistapower.com | still up |
| 2022-06-01 | We enable landlords to generate income from solar panels. · wandsolar.com | still up |
| 2025-01-01 | YCAstro The world’s first AI energy developer · astroenergy.ai | still up |
| 2015-01-01 | AI-powered technology enabler and digital transformer of American… · grubmarket.com | still up |
| 2017-01-01 | YCFaire The global online platform empowering independent retail. · faire.com | still up |
| 2012-06-01 | Unlocking the power of biotech with modern software for modern science · benchling.com | still up |
| 2015-06-01 | YCIronclad AI-powered contract management · ironcladapp.com | still up |
| 2021-01-01 | Mobile Energy Storage Technology · moxionpower.com | gone |
| 2014-01-01 | YCUnbabel AI-powered Language Operations platform · unbabel.com | acquired |
| 2012-06-01 | YCClever The platform that powers technology in the classroom. · clever.com | acquired |
| 2018-01-01 | YCAtrium Modern law firm for startups powered by proprietary technology · atrium.co | gone |
| 2016-06-01 | YCVetcove Powering the animal health supply chain. · vetcove.com | still up |
| 2015-01-01 | YCTempo Live home fitness training powered by computer vision. · tempo.fit | still up |
| 2018-01-01 | YCSRTX Powering a better future for textiles. · srtxlabs.com | still up |
| 2017-06-01 | AI-powered checkout for retail. · standard.ai | still up |
| 2014-06-01 | Building the world's first fusion power plant · helionenergy.com | still up |
| 2015-06-01 | YCBitmovin Powers OTT online video providers with video developer tools. · bitmovin.com | still up |
| 2014-01-01 | Tech-powered women's wellness. · bellabeat.com | still up |
| 2013-01-01 | Empowering restaurants and small food makers to ship nationwide. · goldbelly.com | still up |
| 2017-01-01 | YCBuyPower Modern bill payment platform for African businesses and consumers. · buypower.ng | still up |
| 2019-01-01 | YCAshby All-in-one recruiting platform that empowers hiring excellence in… · ashbyhq.com | still up |
| 2016-01-01 | A live online learning platform that empowers kids ages 3–18. · outschool.com | still up |
| 2020-06-01 | Power commerce photography with generative AI · photoroom.com | still up |
| 2018-01-01 | YCShogun Shogun empowers brands to create exceptional ecommerce experience. · getshogun.com | still up |
| 2019-06-01 | YCUpEquity UpEquity gives homebuyers more certainty and power. · upequity.com | still up |
| 2023-01-01 | YCAvoca AI-powered Sales Agent for Service-Based Industries · avoca.ai | still up |
| 2020-06-01 | YCPowerUs LinkedIn for skilled blue-collar workers · powerus.de | still up |
| 2022-01-01 | YCRDash AI Powered Construction Management Software · rdash.io | still up |
| 2019-01-01 | YCGoLinks Intuitive, easy-to-remember short links - powered by AI. · golinks.io | still up |
| 2017-06-01 | AI-Powered Building Management · vergesense.com | still up |
| 2015-01-01 | Artificial intelligence for drug discovery. · numerionlabs.ai | still up |
| 2021-06-01 | YCForage Payments powering people · joinforage.com | still up |
| 2015-01-01 | YCRemix We’re building a platform to empower cities to plan the best possible… · remix.com | acquired |
| 2022-06-01 | YCJuicebox AI-powered talent sourcing for recruiters · juicebox.ai | still up |
| 2022-06-01 | YCAiPrise AI-powered Global Compliance Platform · aiprise.com | still up |
| 2021-06-01 | YCVerihubs AI-powered Deepfake Detection · verihubs.com | still up |
| 2015-06-01 | Unlock the power of transaction data. · secondmeasure.com | acquired |
| 2017-01-01 | YCAella Diversified credit infrastructure powering payments across Africa. · aellaapp.com | still up |
| 2019-06-01 | Discovering the true signals of disease to power life-changing drugs. · sequencebio.com | still up |
| 2015-01-01 | Bluesmart makes smart luggage powered by an app to empower people to… · bluesmart.com | acquired |
| 2019-06-01 | Your global dollar account powered by stablecoins · cocowallet.app | still up |
| 2014-06-01 | YCOklo Emission free, always on power from advanced fission power plants. · oklo.com | acquired |
How this compares
Older launches have had longer to die, so this slope is expected. A year that broke it would mean something is wrong with the checking.
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.