In the face of climate change, we are
Climate innovators: nominate yourselves for The Earthshot Prize 2026
The challenge is huge, but we are Undaunted
Time is running out to halt the climate crisis, and our window of opportunity to create a greener, more sustainable future is closing fast. We need practical solutions on a scale never achieved before. Innovation is crucial.
We envision a world with a healthy, global climate innovation ecosystem, where diverse innovators leading businesses of all sizes can deliver significant emissions reductions and climate resilience sustainably and at scale.
Unimaginable Unprecedented Undaunted
Our alumni will have real-world impact
We build a bridge from the experimentation and discovery stage of climate technology, nurturing innovation until it is ready to be scaled up. Our activities – including our flagship Greenhouse climate accelerator programme – stimulate the commercial sector to follow and develop a wider ecosystem where green solutions can flourish. We are creating the blueprint for a successful climate innovation ecosystem.
Undaunted in numbers
%
The survival rate of Undaunted startups is 88 per cent, compared to the industry average of 10 per cent. 5 per cent of these companies have exited through acquisition.
180
180 startups have taken part in Undaunted’s accelerator, now known as The Greenhouse
$1.33bn
Undaunted alumni have gone on to raise over $1bn investment since 2012
>1,600
They operate across 30 countries worldwide, and have created over 1,600 jobs. As of September 2024 the total number of employees stands at 1,617
Impact forecast of Undaunted alumni by 2030
29 million
29 million tonnes of cumulative carbon dioxide equivalent forecast to be saved by 2030. This equates to 7% of the UK’s annual greenhouse gas emissions
76 million
76 million tonnes cumulative waste forecast to be avoided by 2030 across the Undaunted startup portfolio. This is equivalent to a third of the UK’s annual waste
7.4 million
7.4 million litres total fresh water to be saved by 2030, equivalent to the annual consumption of 75 thousand UK households
Events
Getting real about net zero
Event date - November 12, 2025
Join Professor Niall Mac Dowell from the Centre of Environmental Policy for his inaugural lecture. Read more
The Greenhouse Pitch Pod
Event date - November 18, 2025
Feedback sessions for early-stage ClimateTech founders Read more
UNA Climate and Sustainability Youth Summit 2025
Event date - November 22, 2025
Join us on Sat 22nd November at Imperial College London to hear from inspiring key note speakers, engage in thought-provoking discussions, and connect with like-minded individuals who share your passion for climate action and sustainability. Read more
Latest news
Unearthing ground-breaking solutions for climate adaptation and resilience
Undaunted’s Climate Solutions Catalyst (CSC) aims to accelerate the journey from academic discovery to climate innovation. Its first ... Read more
Innovative climate tech ventures join EarthScale’s inaugural cohort
EarthScale, a pioneering UK-wide programme, led by Imperial College London, has officially launched with its first cohort. Read more
Women in Cleantech Innovation: “We need a messy solution to a messy problem” – Serena Oppenheim
As part of our series on women in cleantech innovation, the Grantham Institute’s Linsey Wynton meets Serena Oppenheim, co-founder ... Read more