Top Climate Startups in 2026
Climate tech, energy, agriculture, and sustainability startups
About Climate startups
The Climate category collects 11 tech startups indexed on techstartupslist.com. Climate tech, energy, agriculture, and sustainability startups. Notable companies in this space include Apollo Atomics, Inc., Condor Energy, GrazeMate, Inviscid AI, and Madrone — each profile links to the company's own site, lists open roles when their careers page is scrapable, and surfaces growth metrics, funding stage, and founders where we have them. Common themes across these Climate startups: Hardware, Advanced Materials, AI, Artificial Intelligence, Small Modular Reactors. Filtering by any of these tags in the directory narrows the list further. Geographically, the Climate index leans toward San Francisco, Unspecified and Remote, with the rest spread across remote-first teams and other hubs. Many of these companies came in through the Y Combinator scrape (batches Sp26, W26); and the index refreshes daily so this page stays current as funding rounds close, jobs open, and new entrants ship. For a broader view, see the full directory or jump to Climate jobs to apply directly — every outbound link goes to the company's own site, not a paywalled middleman.
Frequently asked questions
What are the top Climate startups in 2026?
Based on our index, Apollo Atomics, Inc., Condor Energy and GrazeMate are among the leading Climate startups tracked on techstartupslist.com. The full list ranks 11 companies in this category.
How many Climate startups are in the techstartupslist.com directory?
We currently index 11 Climate startups. New entries are added automatically as they are discovered from Y Combinator, Greenhouse, Ashby, and other sources.
How often is the Climate category updated?
The Climate listing is refreshed daily by an automated scraper that pulls from Y Combinator and other public sources. The last index update for this page was 2026-06-01.
Where can I find jobs at Climate startups?
Open roles at indexed Climate startups are aggregated on our jobs page at https://techstartupslist.com/jobs. Each role links directly to the company's official application page — we don't act as a middleman.