Undaunted The Greenhouse Accelerator

What Undaunted The Greenhouse Accelerator does

Undaunted is a UK-based, non-profit climate innovation accelerator and hub, founded in 2012 as a partnership between Imperial College London's Grantham Institute and The Royal Institution. Operating from Scale Space on Imperial's White City campus, it runs a portfolio of complementary programmes targeting early-stage climate technology companies: The Greenhouse (a 12-month pre-seed accelerator offering up to £20k of equity-free grant funding, world-class labs, mentoring, and investor introductions), Climate Solutions Catalyst (a two-year academic-to-commercial pipeline built around the ALMa AI literature-discovery platform), EarthScale (a UK-wide commercialisation-stage programme supporting up to 60 startups), the Better Futures Retrofit Accelerator (built environment SMEs, in partnership with the Greater London Authority), the MSc Cleantech Innovation degree, and the Alumni Support Programme. Undaunted also convenes the Global Network of climate entrepreneur support organisations, launched in November 2024 with The Earthshot Prize.

The organisation does not sell a commercial product in the conventional sense. Its "revenue" is grant and partnership income from a diversified funder base that includes HSBC UK, Inflexion Foundation, CO2RE, Quadrature Climate Foundation, the Greater London Authority, the UK Shared Prosperity Fund, and the Mayor of London, supplemented by corporate membership via Imperial Business Partners. Programme delivery is event- and community-driven, with twice-yearly accelerator intake cycles, demo days, bootcamps, and ongoing alumni services. The most technically distinctive capability within the portfolio is ALMa, an AI-powered research discovery tool that uses GPT-4o and structured scientific paper metadata to surface overlooked climate-relevant research faster than manual screening.

Undaunted reports a portfolio of 165+ alumni startups (some sources cite 180) that have collectively raised over $1.33bn since 2012, created 1,617 jobs across 30 countries, and demonstrate an 88% survival rate versus a 10% industry benchmark. Notable alumni include Notpla (Earthshot Prize winner, seaweed-based packaging) and Puraffinity (£17m raised in 2024 for water treatment scale-up). Forecast cumulative impact by 2030 includes 29 million tonnes of CO2 equivalent saved, 76 million tonnes of waste avoided, and 7.4 million litres of fresh water saved.

Name

Undaunted The Greenhouse Accelerator

Legal name

Undaunted

Website

https://undaunted-hq.org

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

Undaunted is a UK non-profit climate innovation accelerator, founded in 2012 by Imperial College London and The Royal Institution, running The Greenhouse pre-seed accelerator and adjacent programmes that have supported 165+ climate tech startups across 30 countries, raising over $1.33bn in alumni funding.

Ownership category

akta.pro rank

Product category

Climate Tech Accelerator Services

NAICS

Research and Development in Biotechnology (except Nanobiotechnology) (541714), Environmental Consulting Services (54162)

akta.pro primary industry

Corporate Accelerators & Startup Programs (FSANAHAD)

akta.pro secondary industries

Early-Stage Venture Capital (Pre-Seed/Seed) (FSANAAAA), Climate / Clean Tech & Decarbonization Funds (FSANAJAA), Environmental & Climate Grantmaking Foundations (BPAGAKAM), Youth Business Incubators & Accelerators (EDAMAHAC)

Keywords

• Climate tech accelerator
• Startup incubation programs
• Cleantech venture support
• Innovation ecosystem services
• Pre-seed equity-free funding

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Others

Revenue model

1. Grant Funding to Startups: The Greenhouse provides up to £20k in equity-free grant funding to selected startups. This is non-dilutive funding provided to support startup development.
2. Corporate Partnership Membership: Imperial Business Partners (IBP) climate innovation track, in partnership with Undaunted, provides corporate membership with benefits including workshops, e-meetings, sponsorship opportunities, and consultancy. Companies join as members to access climate innovation ecosystem.
3. Government/Funder Support: Funded by HSBC UK, Inflexion Foundation, CO2RE, Greater London Authority, UK Shared Prosperity Fund, and Mayor of London. Climate Solutions Catalyst supported by Quadrature Climate Foundation.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

Undaunted operates The Greenhouse, a 12-month pre-seed accelerator programme supporting early-stage climate technology startups and university spinouts. Selected startups receive up to £20k in equity-free grant funding, access to shared labs and prototyping facilities at Imperial's White City campus, monthly investor sessions, one-to-one investor introductions, coaching and mentorship, and connections to corporate partners. The broader ecosystem also includes Climate Solutions Catalyst, EarthScale, Better Futures Retrofit Accelerator, an MSc Cleantech Innovation degree, ClimateLaunchpad, and the Global Network of Entrepreneur Support Organisations.

Product overview

Undaunted is a climate innovation accelerator ecosystem rather than a single software product. Its core offering is The Greenhouse, a 12-month pre-seed accelerator supporting climate tech startups. Adjacent programmes include Climate Solutions Catalyst (which includes the ALMa AI platform for research discovery), EarthScale (commercialization support), Better Futures Retrofit Accelerator (built environment focus), MSc Cleantech Innovation (educational programme), ClimateLaunchpad (ideation competition), Global Network (international ESO connection), and an Alumni Support Programme. These programmes collectively create pathways from early-stage research through to scaled climate solutions.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 88% survival rate vs 10% industry average for startups
• +3 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles4 records

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature1 record

Partnerships

Eight partnerships are on record, tiered major and core.

• Imperial Business PartnersmajorGTM or Marketing Partner · 1 January 2025Imperial Business Partners (IBP) connects industry to Imperial's innovation ecosystem. The climate innovation track, in partnership with Undaunted, provides corporate membership with workshops, e-meetings, and sponsorship opportunities.
• The Earthshot PrizecoreStrategic or Co-development Partner · 1 January 2024The Earthshot Prize was instrumental in The Global Network's conception and early development. Undaunted, Imperial, and The Earthshot Prize are leading a global network of accelerators. Earthshot Week 2024 in Cape Town launched the Global Network initiative.
• Imperial College LondoncoreStrategic or Co-development Partner · 1 January 2012Imperial College London is a core founding partner of Undaunted. Grown in Imperial's Grantham Institute – Climate Change and the Environment, Undaunted has climate expertise, science and passion for the planet in its DNA. Imperial provides world-class facilities, research expertise, and access to the broader innovation ecosystem including the White City Innovation District.
• The Royal InstitutioncoreStrategic or Co-development Partner · 1 January 2012The Royal Institution (Ri) is a founding partner of Undaunted alongside Imperial College London. Since 1799, the Ri's eminent scientists have recognized the importance of sharing work with the wider public. Today the Ri's vision is that science is for everyone, bringing the public and scientists together.
• Scale SpacecoreStrategic or Co-development PartnerScale Space on Imperial's White City campus is the location for The Greenhouse accelerator. Part of the White City Innovation District, providing startups with access to collaborative co-working spaces.
• Imperial IncubatorcoreStrategic or Co-development PartnerThe Greenhouse is based at the Imperial Incubator in WestTech London. Startups access shared lab benches and prototyping facilities through Imperial Incubator and Advanced Hackspace.
• Royce InstitutecoreStrategic or Co-development PartnerStartups can access world-class facilities including the Royce Institute for advanced materials research.
• Imperial Investor NetworkmajorChannel Partner/ Reseller/ DistributorGrowing database and network of climatetech and generalist investors who follow Greenhouse alumni progress. Provides investor introductions and pitch opportunities for alumni startups.

Scale indicators9 records

Recent moves7 records

Expansion highlights6 records

Regional players

• Climate-KIC: EU-backed climate innovation community running accelerators and accelerators across Europe. Comparable in mission and structure but primarily serves Continental Europe rather than the UK.

Direct peers

• Founders Factory: London-based accelerator with a dedicated climate/sustainability vertical. Operates a cohort-based programme for early-stage climate and impact startups in the same UK ecosystem as Undaunted.
• Elemental Excelerator: US-based non-profit climate accelerator supporting early-stage climate startups with funding, mentorship and corporate partnerships. Directly comparable to Undaunted in mission, cohort model, and equity-free/granted funding approach.
• Sustainable Ventures: UK climate-tech accelerator and investor based in London. Targets early-stage climate startups with similar programming, investor introductions, and ecosystem-building thesis.
• Greentown Labs: US-based cleantech incubator and prototyping hub. Closest functional analog to Undaunted's Greenhouse model — provides lab space, programming, and investor connections to early-stage climate hardware startups.

Broad incumbents

• Carbon Trust: UK-based climate advisory and accelerator that supports climate startups and corporates on decarbonisation. Overlapping mission and UK ecosystem presence make it a broad incumbent peer.
• Activate (formerly Cyclotron Road): US deep-tech fellowship supporting science entrepreneurs with two-year residencies, mentorship and stipends. Comparable in mission to Undaunted's Climate Solutions Catalyst (research → commercialisation) and Greenhouse models.
• Techstars Sustainability Accelerator: Global accelerator with a sustainability/climate vertical offering equity-backed cohort programming and investor networks. Comparable in cohort structure and target founder profile.
• Catapult Energy Systems (now part of Innovate UK): UK government-backed technology and innovation network providing acceleration and scaling support to energy startups. Comparable UK footprint and climate-tech acceleration focus.

Others

• Imperial College Enterprise / Imperial Incubator: Imperial College London's own enterprise division that physically hosts Undaunted at White City and provides shared lab and hackspace facilities. Functionally an ecosystem enabler/partner rather than competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/Undaunted_HQ
• YouTubeyoutube.com/@granthaminstitute
• LinkedInlinkedin.com/company/undaunted-hq
• Instagraminstagram.com/granthaminstituteicl

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments29 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Undaunted The Greenhouse Accelerator