ZERO - The Italian Cleantech Accelerator

Run by ZERO Accelerator.

ZERO is a cleantech accelerator in Rome running five months in two phases -- two months of Discovery for up to 10 startups, then three months of Validation for those selected for investment -- followed by six months in residence with a year of desk space at the Eni hub in Rome Ostiense. The pre-seed investment is EUR 120,000, of which EUR 100,000 in cash and EUR 20,000 in services; equity terms are not published. The site describes a fourth edition launched in 2024, which is the last confirmed open call.

Investment

€120,000 (Above Europe & C. Asia median $54.5k · Above global median $61.3k)

Equity taken

Not disclosed

Duration

22 weeks (Shorter than Europe & C. Asia median 26 wks · Longer than global median 20 wks)

Format

in person

Cadence

annual

Location

Rome, Italy

Sectors

• Climate
• Energy
• Deep Tech

How to apply

Official website

This programme has notes explaining its undisclosed figures, available in the full dataset.

Sources

Every figure above is taken from these pages, published by the programme or its parent organisation.

• https://www.zeroacceleratorcleantech.com/ read 2026-09-05 — supports cheque amount, cheque currency, cheque note, duration weeks, duration note, batch cadence, format, sectors, application url, status, city, organization, contact email

Other accelerators in Rome

• ESA BIC Lazio

Last verified 2026-09-05.