Best climate tech accelerators 2026
15 climate programs. Ranked programs come first; unranked ones are marked n/r. climate deadlines.
| # | Accelerator | Location | Verticals | Headline check | Fixed equity | Deadline | Score |
|---|---|---|---|---|---|---|---|
| – | Activate Fellowship | US (Berkeley, Boston, Houston, NYC, Anywhere) | climatehardwaredeeptech | — | — | Closes Oct 30, 2026 | n/r |
| – | Breakthrough Energy Fellows | Unconfirmed | climate | — | — | Not published | n/r |
| – | Catalyst Fund (BFA Global) | Africa / Asia | fintechclimate | — | — | Not published | n/r |
| – | Cyclotron Road (Berkeley Lab) | Berkeley, CA | climate | — | — | Closes Oct 30, 2026 | n/r |
| – | Elemental Impact | Honolulu / San Francisco | climate | — | — | Not published | n/r |
| – | HAX (SOSV) | Newark, NJ | hardwareroboticsclimate | $250,000 | — | Rolling | n/r |
| – | IndieBio (SOSV) | San Francisco / New York | biotechclimatefood | — | — | Rolling | n/r |
| – | MassChallenge Switzerland | Switzerland | generalisthealthclimate | — | — | Not published | n/r |
| – | Newlab | Brooklyn, NY / Detroit | climatemobility | — | — | Not published | n/r |
| – | Techstars Alabama EnergyTech | Birmingham, AL | energyclimate | — | — | Not published | n/r |
| – | Third Derivative | Unconfirmed | climate | $100,000 | — | Not published | n/r |
| – | Google for Startups Accelerator | Regional cohorts (hybrid) | aicloudclimate | — | 0% | Closed – next TBA | n/r |
| – | Google for Startups Accelerator: North America (AI for Energy) | North America (hybrid) | aienergyclimate | — | 0% | Closed – next TBA | n/r |
| – | Greentown Labs | Somerville, MA / Houston, TX | climatehardware | — | 0% | Not published | n/r |
| – | MassChallenge | Unconfirmed | generalisthealthclimate | — | 0% | Not published | n/r |