Third Derivative climate tech accelerator
Third Derivative (D3)
Open continuously
No deadline — apply whenever you are ready.
The accelerator itself provides programming, investor and corporate access rather than a fixed cash grant; investment may follow from the Third Derivative investor syndicate.
Third Derivative (RMI and New Energy Nexus)
private · supranational
Deadline: cutoff — Cohorts are recruited roughly twice a year with published application deadlines (for example the 24-2 cohort deadline was extended to 2 April 2024). The May 2026 cohort comprised 26 startups from 13 countries.
This funder does not publish a success rate. We rank it using the rate observed across similar programmes and label it as an estimate rather than implying we know.
Quick — mostly identity and bank details.
Who can apply
- Sectors: climate, energy, manufacturing
- Stage: seed, series_a
Requires at least two full-time employees, a working prototype, for-profit status and no basic science risk. Global applicants accepted.
How to apply
- Submit the online application on the Third Derivative startups page
- Screening and diligence by D3 and partner investors
- Selected startups join the virtual 18-month accelerator
Source. https://www.third-derivative.org/startups — checked 2026-08-14
"If accepted, you'll take part in our virtual, 18-month accelerator program."