Rowboats, not kayaks: Cohort 11 sets off in Cambridge

Rowboats, not kayaks: Cohort 11 sets off in Cambridge

Oct 13, 2026 | News

Cohort 11 of Carbon13’s Venture Builder has started in Cambridge, and this group has a clear theme: serial founders. 57% of the people joining us have built a company before. That matters in climate tech. The problems are big, the timelines are long and there is...
We are looking for you

We are looking for you

Jul 22, 2025 | News

All great stories start somewhere. Yours could start with an application. Carbon13 builds and backs ventures addressing Earth’s critical life support systems. Initially this means addressing the most urgent problem of our time – climate change. We are looking for you!...
Kestrix – Portfolio Selection

Kestrix – Portfolio Selection

Mar 7, 2025 | Our Portfolio Featured

Google Maps of heat loss Company Name Kestrix Founded 2022 Cohort Cambridge Cohort 4 City London Country UK Founders & Roles Lucy Lyons – CEO Matt Goodridge – CTO Web www.kestrix.io The Solution Kestrix is on a mission to unlock energy retrofits of...
Matnex – Portfolio Selection

Matnex – Portfolio Selection

Mar 7, 2025 | Our Portfolio Featured

 discover new materials in months, not decades.   Company Name MatNex Founded 2021 Cohort Cambridge Cohort 1 City Cambridge Country UK Founders & Roles Dr Jonathan Bean, CEO Dr. Robert Forrest, CTO Dr. Jon Pillow, CSO Nic Stirk, CCO  Web www.matnex.ai The...
Nium – Portfolio Selection

Nium – Portfolio Selection

Feb 20, 2025 | Our Portfolio Featured

Clean Ammonia on Demand Company Name Nium Founded 2022 Cohort Cambridge Cohort 3 City Abingdon Country UK Founders & Roles Lewis Jenkins, CEO Dr. Yubiao Niu, CSO Phil Hunter, COO Web wearenium.com The Solution We are Nium. A climate company using novel...