Top London Greentech Companies (30)

Perk (formerly TravelPerk) is the intelligent platform for travel and spend management. Built to tackle the time-consuming, manual work that gets in the way of real work, our tools automate everything from travel bookings to expenses, invoice processing, and more. By eliminating this shadow work that wastes hours, erodes morale, and saps innovation, we’re on a mission to power real...

Voluntary carbon offsetting is a critical part of a net zero plan, but getting offsetting wrong is a reputational liability. We help companies navigate the complexity of the voluntary carbon markets and build a credible and rigorous path to net zero. Together, we can scale carbon removal solutions to align corporate action to the 1.5°C Paris goal.

Safi is the new era of TrueCircle. Since we launched in 2021 under the name TrueCircle, we have been on a mission to tackle recycling inefficiency by improving the way we buy and sell recyclables. Safi gives customers access to the best prices and instant expansion into global markets. Through Safi AI, sellers can prove their material quality and drive...

Carbon Clean is an established global leader in industrial carbon capture solutions helping essential, but hard-to-abate, industries decarbonise. Our innovative solutions significantly reduce the costs and environmental impacts of carbon capture compared to conventional technologies. Technology to achieve 'net zero'.

Isometric is a carbon removal standard and registry.

Zero100 is a leading intelligence company that helps senior business and operations executives make critical supply chain investment decisions. Zero100’s approach combines unique IP-led research and data, intimate executive-level events, personalized guidance, and access to an extensive community of influential thinkers and voices from within, and beyond, supply chain. 

ENGIE North America is on a mission to shape a sustainable future built on clean, affordable, resilient energy and the infrastructure that supports it.

ZELP is an agricultural technology company committed to creating a sustainable future for agriculture. Our first focus is to measure and reduce methane emissions in the livestock industry, whilst supporting livelihoods, food security and animal welfare. Today, 1.3 billion people rely on the livestock industry for their livelihoods and their food and nutrition security. However, it is the single biggest...

SCB is a low carbon market leader providing bespoke solutions to help customers achieve their climate goals, carbon neutrality and net-zero commitments. With more than 17 years of experience in environmental markets, SCB supports the financing of high-integrity and quality emission reduction and removal projects globally. The company has a team of over 100 industry experts spread across multiple offices...

Opna's vision is to unlock the needed capital for every high-quality climate project that addresses climate change with speed, scale, and equity. We offer a climate financing platform that empowers corporates to discover, finance, and manage pre-assessed carbon removal and reduction projects to accelerate the journey to net zero. Through offtakes and forward agreements, corporates can use Opna to deploy...

The UK & Ireland's clean energy champion. We’re investing more than ever before in a cleaner, more affordable and more secure energy system. We are creating and supporting thousands of good jobs. We power change.

If you are operating a heat network, or planning a new heat network, then FairHeat can ensure that you get maximum efficiency from your heat networks while reducing operating and capital expenditures. Get in touch today and find out how we can make a difference.

Levistor develops inherently safe flywheel technology to reduce the costs of high-power, short-duration energy storage. Our inherently safe flywheels require little containment and no safety enclosures or bunkering that flywheels traditionally require to protect people and property in the event of a mechanical fault. This brings down the cost and makes flywheels a viable technology for supply bursts of energy,...

The mission of Kiri is to accelerate the adoption of sustainable behaviours. Kiri drastically changes the approach to sustainability by creating a community of forward-thinking consumers and brands, willing to take action together to make the world more sustainable. The Kiri solutions incentivise individuals and brands to behave sustainably, establishing a synergic system in which acting green becomes easy and...

OVO Energy was founded in 2009 and redesigned the energy experience to be fair, effortless, green and simple for all customers. OVO is on a mission through its sustainability strategy Plan Zero to tackle the most important issue of our time; the climate crisis, by bringing our customers with us on the journey towards zero carbon living. OVO Energy has...

RheEnergise is bringing fresh innovation to the world’s dominant form of storage: pumped hydro storage. We call our solution High-Density Hydro®. HD Hydro® uses our proprietary HD Fluid R-19 which has 2.5x the density of water. It is environmentally benign, non-toxic, non-corrosive, and non-reactive. R-19 gives RheEnergise projects 2.5x the power and 2.5x the energy when compared to water. Unlike...

Building novel solutions for clean air, water and energy with AI. Let's keep Earth our home forever. From sustainable fuels, to carbon capture, to harmful chemical removal from the environment, Orbital Materials develops and commercialises technologies that keep earth our home forever. At the core of our company is a foundation model for atoms, built by world experts in generative...

In the UK, EQUANS is a provider of technical services, FM, regeneration and energy services – with specialist capabilities in smart buildings, green mobility, district & embedded energy and decentralised renewables. Equans’ 13,500 UK employees combine these activities to help businesses, public sector organisations and government to embrace the energy transition towards net zero, and also the digital & industrial...

Founded in 2018, Mitiga Solutions provides climate risk intelligence that combines science, AI, and high-performance computing. We help our customers analyse, report, and act on their business exposure to climate risk through our self-serve platform EarthScan™ and our risk models. Our mission: Make the world a more resilient place under a changing climate. Mitiga is headquartered in Barcelona, Spain,...

Verifi is a global ClimateTech and ConstructionTech venture backed by Saint-Gobain, on a mission to transform how the world produces and delivers concrete — one of the planet’s most essential but carbon-intensive materials. Concrete touches every road, bridge, home, tunnel, and skyline. But for decades, the ready-mix industry has operated with limited data, high variability, and significant waste. Verifi changes that. We...