Cleantech Open Accelerator
No accelerator equity published; application and participation fees apply · US · Checking status
Cleantech Open's 2026 accelerator is closed. The program runs from a required late-May National Academy through August regional work and October finals; fees range from $1,875 for qualifying student teams to $2,950 standard, excluding travel.
Tier 2 · ranked #71usclimateequity-free
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Program intake
We are checking the program's authoritative source for the current application status.
Key facts
| Check size | Competition investment/prizes; current exact value not published |
| Terms | No accelerator equity published; application and participation fees apply |
| Stage | early-stage cleantech |
| Applications | Checking status |
| Program dates | 2026 applications closed April 6; program May 31–August 25; finals October 20–22 |
| Location | US |
| Remote friendly | No |
| Warm intro needed | No — open application |
| Sectors | climate, energy |
| Status | closed |
Always confirm on the official page before applying — dates and terms change.
Background
Cleantech Open's 2026 accelerator is closed. The program runs from a required late-May National Academy through August regional work and October finals; fees range from $1,875 for qualifying student teams to $2,950 standard, excluding travel.
How the application really works
The April 6 deadline passed. Use the official page to register interest in the next cycle and budget for fees and required travel.
Tips
- Read the cited current official page before applying because program dates and terms are volatile.
- State fit with the documented stage, geography, and attendance model; do not rely on an aggregator's old terms.
- Ask for the complete investment, fee, and follow-on documents when the public page does not publish them.
Watch out for
- $80 application fee ($30 early) plus $2,950 standard participation, $2,600 early or $1,875 qualifying student; travel is extra. Prize/investment terms are not public.
- The 2026 intake is closed. The winner investment is described as favorable but its amount and instrument are not published on the checked page.
Track record
- The current page documents a national finals pathway but does not publish a current acceptance rate or exact winner investment amount.
Screening precedes regional participation and national finals; no current acceptance rate is published.
Frequently asked questions
- Is this program currently accepting applications?
- The April 6 deadline passed. Use the official page to register interest in the next cycle and budget for fees and required travel.
- What are the current economics?
- $80 application fee ($30 early) plus $2,950 standard participation, $2,600 early or $1,875 qualifying student; travel is extra. Prize/investment terms are not public.
- How large and long is the program?
- Current cohort size and application volume are not published. National Academy, regional acceleration May–August, regional finals in September and national/global finals in October.
- Can founders participate remotely?
- Required New York academy and Boston finals/travel components; not fully remote.
- What happens after the program?
- Finals, investor exposure and a possible winner investment; no amount or automatic follow-on published.
Related accelerators
Sources
- www.cleantechopen.org/en/page/2026-cto-accelerator-en — Official 2026 cutoff, dates, fees, required events, selection and contact (checked 2026-08-10)