You asked about Renewable Energy
104 people built something like it. 16 are gone.
That is 17% of the ones whose fate we could settle, against 23% across the whole register. 8 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-01-01 | Mobile Energy Storage Technology · moxionpower.com | gone |
| 2015-01-01 | YCZeitview Inspection software for renewable energy & sustainable infrastructure · zeitview.com | still up |
| 2016-06-01 | Raptor Maps builds software to manage the solar PV lifecycle. · raptormaps.com | still up |
| 2023-01-01 | YCRUUF Managed marketplace for solar in Latam · ruuf.cl | still up |
| 2022-01-01 | Software to find the best sites for renewables on the electrical grid · niraenergy.com | still up |
| 2019-06-01 | SaaS that helps renewables & energy storage operate more profitably · gaia-scope.com | acquired |
| 2021-06-01 | Reducing energy costs & emissions in buildings. · kapacity.io | acquired |
| 2019-06-01 | Building flying wind turbines. · kitekraft.de | still up |
| 2023-01-01 | YCCoperniq Workflow software for solar & energy contractors ☀️😎 · coperniq.io | still up |
| 2019-01-01 | AI driven professional engineering firm · traverse.ai | gone |
| 2022-06-01 | Claim solar incentives with AI · jasmine.energy | gone |
| 2024-06-01 | YCPlume Renewable infrastructure deployment at scale. · plumefinder.com | still up |
| 2026-06-01 | We turn waste gases into supply-secure chemicals · rise-reforming.com | still up |
| 2019-01-01 | We deliver affordable renewable energy direct to customers and are… · getgex.com | gone |
| 2026-01-01 | Energy independent data centers with solar and repurposed batteries. · voxelenergy.com | still up |
| 2023-06-01 | Incentives and financing for energy efficiency upgrades · line.build | gone |
| 2024-06-01 | YCRewbi A stealth mode startup. · rewbi.com | still up |
| 2024-01-01 | Batteries and solar for $0 upfront to help businesses save money · vistapower.com | still up |
| 2026-06-01 | YCMeteoric Drones that clear clouds over solar farms and weaken hurricanes · meteoric.earth | still up |
| 2017-06-01 | YCWATERFX The world's first 100% sustainable water provider (aka alternative… · wacomet.com | gone |
| 2025-01-01 | YCAstro The world’s first AI energy developer · astroenergy.ai | still up |
| 2026-08-28 | wilsonharper.net | unverified |
| 2016-01-01 | AI + Robotics for the Built World · geckorobotics.com | still up |
| 2015-06-01 | YCOolu Oolu is one of the fastest growing off-grid solar firms in West Africa · oolusolar.com | acquired |
| 2020-06-01 | YCStatiq. India's Largest EV charging network · statiq.in | still up |
| 2014-06-01 | Building the world's first fusion power plant · helionenergy.com | still up |
| 2021-01-01 | YCGridware Protecting the grid today, preparing the grid for tomorrow · gridware.io | still up |
| 2016-06-01 | Making car ownership and management frictionless. · yoshimobility.com | still up |
| 2016-06-01 | YCValidere A carbon MRV solution for energy and hard-to-abate sectors · validere.com | still up |
| 2015-01-01 | YCBright Sunrun for the developing world · thinkbright.mx | still up |
| 2022-01-01 | First electric business aircraft designed for hydrogen propulsion · beyond-aero.com | still up |
| 2016-01-01 | To make food a renewable resource, for everyone · inevitabletech.com | gone |
| 2021-01-01 | YCEnode Energy Orchestration Platform · enode.com | still up |
| 2018-06-01 | YCTENDERD AI Platform for Efficient and Sustainable Operations · tenderd.com | still up |
| 2021-01-01 | YCShepherd Modernizing commercial insurance · shepherdinsurance.com | still up |
| 2020-01-01 | YCSINAI Enterprise software to quantify cost-effective decarbonization… · sinai.com | still up |
| 2014-06-01 | YCOklo Emission free, always on power from advanced fission power plants. · oklo.com | acquired |
| 2022-06-01 | YCPaces Agentic AI for Power Projects and AI Infrastructure · paces.com | still up |
| 2015-06-01 | YCReach Long range, wireless energy distribution that scales · reachpower.com | still up |
| 2017-06-01 | Sunfolding builds next generation infrastructure for solar farms. By… · sunfolding.com | gone |
| 2023-06-01 | YCHyLight Unmanned airships for inspecting our critical assets · hylight.aero | still up |
| 2016-01-01 | Data management platform for oil & gas assets · mineralsoft.com | acquired |
| 2020-06-01 | Predictive battery management software for electrified fleets · zitara.com | still up |
| 2022-06-01 | Engineering the future of chemistry for natural resource extraction · maverickx.com | still up |
| 2024-06-01 | YCautarc autarc is the agentic OS for energy installers. · autarc.energy | still up |
| 2017-06-01 | YCAdvano Advano is a battery technology company that improve the longevity of… · advano.io | still up |
| 2014-01-01 | Enabling li-ion batteries to charge ultra fast without compromising… · gbatteries.com | still up |
| 2019-01-01 | We use solar and wind power to make zero net carbon electrofuels · prometheusfuels.com | still up |
| 2022-01-01 | YCKorrAI Traceable AI for billion-dollar infrastructure. · korrai.com | still up |
| 2020-01-01 | YCPowerX AI powered sensors that save energy, water and emissions · powerx.co | acquired |
| 2017-06-01 | YCAirthium Decarbonized heat and power cheaper than fossil fuels · airthium.com | still up |
| 2021-06-01 | Low-cost, high-scale EV charging platform for apartments (and more). · heycharge.com | still up |
| 2021-06-01 | YCFerveret Nuclear-inspired cooling that turns wasted power into more AI compute · ferveret.com | still up |
| 2023-06-01 | YCdili Automating Compliance for Construction · dili.com | still up |
| 2015-06-01 | Reliable and affordable solar energy in developing countries. · sunfarmer.org | still up |
| 2021-01-01 | YCAurabeat Providing clean, safe, virus free air for homes, buildings and cars · aurabeattech.com | still up |
| 2017-06-01 | YCNextDrop NextDrop is the water marketplace for urban India. We connect water… · thenextdrop.com | gone |
| 2021-01-01 | Electricity price forecasts for energy storage, ev charging, etc. · inbalanceresearch.com | acquired |
| 2022-01-01 | YCPosh Rapidly deployable energy solutions for modern commercial and… · poshenergy.com | still up |
| 2022-01-01 | AI-driven HVAC control system for improved energy performance · axross.co | still up |
How this compares
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.
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.