Top 209 Greentech Startups UK (Free List)
Find the fastest growing greentech companies in the UK.
Top 209 Greentech Startups UK (Free List)
Find the fastest growing greentech companies in the UK.
1 Explore 209 UK greentech startups and their founders, who have collectively raised £2.85B.
2 Easily sort, filter, and compare the UK's top startups — customise the list to your needs.
3 Discover top startups for investment, B2B sales, partnerships, hiring, and industry connections.
You can connect with fast-growing greentech startups with the full list of recently funded startups from the UK.
Greentech is big right now and greentech investors are pouring in funds and it’s a race to become that next big green startup.
But it’s not always easy to put a label on a business as greentech is often a mix of energy, proptech and agtech.
What is a greentech startup?
A GreenTech startup is a company that focuses on developing and providing innovative technologies, products, or services with the primary aim of addressing environmental and sustainability challenges.
These startups aim to create solutions that contribute to the well-being of the planet, reduce ecological footprints, and promote environmentally friendly practices.
The areas of focus for GreenTech startups often include renewable energy, energy efficiency, waste management, water conservation, sustainable agriculture, and other eco-friendly technologies.
UK greentech startup insights
The UK greentech sector is expanding across climate technology, carbon reduction, renewable systems and sustainability software. London, Oxford, Cambridge and Scotland are major hubs for funded greentech innovation.
Greentech in this context includes carbon reduction tools, sustainability analytics, circular economy platforms, renewable generation, environmental monitoring, industrial optimisation and climate-focused hardware. Funding spans early-stage climate innovations to large Series A rounds.
Snapshot of the UK greentech landscape
- Active funding across carbon reduction, sustainability and climate technology
- Key hubs include London, Oxford, Cambridge and Scotland
- Round sizes range from seed rounds to significant Series A financings
- Investors include climate funds, impact investors, corporates and deeptech VCs
- Strong demand driven by net zero targets and regulatory pressure
Use this page to explore the fastest growing greentech startups in the UK, with detailed company profiles and funding information.
That’s for the recently funded greentech startups. With growing interest in sustainability, greentech investors are actively funding startups tackling energy, waste, and climate challenges. Greentech covers a diverse range of sectors, each addressing different aspects of environmental sustainability and resource management:
10 types of Greentech startups
1 - Renewable Energy Startups
- Solar Power: Companies developing solar panels, solar energy storage solutions, and solar-powered devices.
- Wind Power: Startups focused on wind energy generation, including wind turbines and wind farm technologies.
- Hydropower: Companies working on hydroelectric power systems and technologies.
2 - Energy Efficiency Startups
- Smart Grid Technology: Startups developing advanced energy distribution and management systems to optimise electricity usage.
- Energy Monitoring and Analytics: Companies creating technologies to monitor and analyse energy consumption for better efficiency.
3 - Clean Transportation Startups
- Electric Vehicles: Startups designing and manufacturing electric cars, bikes, scooters, and charging infrastructure.
- Alternative Fuels: Companies working on biofuels, hydrogen fuel cells, and other sustainable transportation fuel solutions.
4 - Waste Management Startups
- Recycling Technologies: Startups focused on developing innovative recycling processes and technologies.
- Waste-to-Energy: Companies working on technologies that convert waste into energy.
5 - Water Conservation and Treatment Startups
- Water Monitoring: Startups developing sensors and technologies for monitoring water quality and consumption.
- Water Purification: Companies creating sustainable and efficient water purification and desalination solutions.
6 - Smart Agriculture Startups
- Precision Farming: Startups using technology to optimise agriculture practices and reduce resource use.
- AgTech: Companies developing sustainable farming technologies, including robotics, sensors, and data analytics.
7 - Green Building Startups
- Energy-Efficient Building Materials: Startups creating eco-friendly and energy-efficient construction materials.
- Smart Buildings: Companies developing technologies to improve energy management and reduce environmental impact in buildings.
8 - Environmental Monitoring Startups
- Air and Pollution Monitoring: Startups developing sensors and technologies to monitor air quality and pollution levels.
- Climate Change Solutions: Companies working on technologies to address and mitigate the impacts of climate change.
9 - Circular Economy Startups
- Reusable and Sustainable Products: Startups focused on creating products that promote a circular economy and reduce waste.
10 - Biodiversity and Conservation Startups
- Wildlife Protection: Companies using technology to monitor and protect endangered species.
- Habitat Restoration: Startups working on ecological restoration and conservation projects.
Related greentech and climate innovation resources
Frequently asked questions
Greentech startups build products, software or infrastructure that reduce environmental impact, improve sustainability or support the transition to a lower-carbon economy. UK greentech startups work across energy, carbon removal, waste, circular economy, transport, buildings, agriculture and climate data.
Greentech startups are growing because businesses, governments and consumers need solutions for climate change, energy efficiency, carbon reporting and resource use. The UK has strong climate policy drivers, investor interest and technical talent across energy, software, science and infrastructure.
Greentech startups raise funding from angel investors, climate funds, venture capital firms, grants, corporate partners and infrastructure investors. Many also use pilots with corporates, local authorities or industrial customers to prove real-world impact and commercial value.
Investors look for greentech startups with large markets, measurable environmental impact, clear customer demand and scalable business models. They also assess whether the company can move beyond pilots into repeatable sales, deployment or infrastructure partnerships.
Growing UK greentech sectors include energy management, carbon accounting, circular economy, clean transport, waste reduction, climate data, building efficiency and industrial decarbonisation. Startups that combine climate impact with strong economics are especially attractive.