Ellie Horvath
At Best Startup London we track over 100,000 London based startups and over 500,000 people who hold key positions in these companies. We use this directory of startups to highlight top employees, founders and organisations we think deserve more appreciation than they are currently getting.
We’ve ranked the top 54 Clean Energy companies in London. The companies, startups and institutions listed in this article are all exceptional companies, well worth a follow. We have included links to their websites, socials and CrunchBase (if you’re interested in their financials).
We selected the organisations listed in this article based on:
- Track record
- Executive leadership
- Market share
- Innovation
- ESG rating
Our Data – We source our data from OSINT (open source intelligence) and public directories such as Crunchbase, SemRush and many more. The data from these sources should be treated with a degree of caution and verified yourself.
Top Clean Energy Companies & Startups (London)
Bramble Energy
| Founders | Tom Mason |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Bramble Energy is an innovator energy technology company that designs and manufactures high-performance, low-cost, and fuel cell stack
H2GO Power
| Founders | Enass Abo-Hamed, Varun Gandhi |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
H2GO Power develops safe and low-cost hydrogen production and storage technologies.
Carbon Trust
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Carbon Trust is to accelerate the move to a low carbon economy, by working with organisations to reduce carbon emissions now and develop.
CORE POWER (UK) Ltd
| Founders | Mikal Boe |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Advanced atomic technologies can be a game changer for heavy transport and industry.
GrowUp Farms
| Founders | Kate Hofman, Tom Webster |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
We’re turning food production on its head to make way better food, that doesn’t cost the earth.
SEaB Energy
| Founders | Nick Sassow, Sandra Sassow |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
SEaB Energy has patented a micro anaerobic digestion system for onsite and in-building conversion of organics to energy, water, & fertiliser
Carnot
| Founders | Archie Watts-Farmer, Francis Lempp, Nadiur Rahman |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Carnot is a developer of hydrogen engine used to reduce the fuel consumption and zero CO2 emissions.
Carbon Analytics
| Founders | Colin MacLaughlin, Greg FitzGerald, James Tilbury, Michael Thornton |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Carbon Analytics transforms a company’s accounting data into a highly visual, actionable carbon footprint analysis.
Ichthion
| Founders | Inty Grønneberg, Robert Edwin Rouse |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Ichthion engaged in Development of cutting-edge technology to restore the ocean environment.
Mandulis Energy
| Founders | Elizabeth Nyeko, Peter Benhur O. Nyeko |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Develops renewable energy projects in emerging markets
Solaris Offgrid
| Founders | Benjamin David, Siten Mandalia, Thibault Lesueur |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Provide sustainable energy in low income communities.
Quimera Energy Efficiency
| Founders | Cherrie Sacchetti, David García |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Energy Efficiency, ESCO, Energy Saving, Energy Service
Ventive
| Founders | Tom Lipinski |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Ventive creates healthy internal environments. Pioneers of Passive Ventilation with Heat Recovery
Cambridge Clean Energy Ltd.
| Founders | William Bubenicek |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Revolutionizing the way energy is delivered to emerging markets. Clean-Tech firm focused on innovation and distributed energy as a service
Demand Logic
| Founders | Dan Mauger, Joe Short, Mike Darby, Nils Tödtmann |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Demand Logic is an online energy efficiency system that analyzes data from building management systems.
Clim8 Invest
| Founders | Duncan Grierson |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Clim8 Invest provides an app that allows individuals to invest in industries that work towards fighting climate change.
E24
| Founders | Antoine Saab, Royale Bath |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
E24 provides fully integrated end-to-end, modular and inter-connectable renewable energy solutions.
Q2i Group
| Founders | Lawrence vK-B, Mark Standish, Phil Gower |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Blockchain Interoperability – Complex Transactions Monetised – Blockchain Agnostic Platform – Q2iD – ID Control – Q2iPay
Electron
| Founders | Joanna Hubbard, Paul Ellis |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Electron is accelerating the energy industry’s transition to Net Zero by making granular, market-based interactions possible.
Tamar Energy
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Tamar Energy is a clean energy company focused on producing energy from organic waste matter.
Urban Wind Assets
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Urban Wind Assets built and operating with a few still in the late stages of construction and connection.
First Imagine! Ventures
| Founders | Alexander Starchenko |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Early stage venture capital investor focused on technologies driving the Energy transition
Altroleum
| Founders | Petar Besevic, Simon Spurrier |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Software for the energy transition
PF Nexus
| Founders | Mike Smales, Scott Gillam |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Renewable energy & infrastructure deal origination platform
Earth Capital
| Founders | Stephen Lansdown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
EC is a global private equity investment manager totally focused on Sustainable Development within the climate change nexus.
Ignite Power
| Founders | Yariv Cohen |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Ignite Power is Pan-African developer and financier of safe clean energy solutions.
ALP Technologies
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
ALP Technologies focuses on developing renewable energy technologies for the developing world.
Natural Capital Partners
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Natural Capital Partners creates solutions that delivers positive impacts for the environment and society.
AVA Global
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Interim Management & Executive Search
WOXON
| Founders | Achim Hoffmann |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
WOXON is the climate repair company developing proprietary and scalable technology to cool down the oceans
Verditek
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Verditek focused on clean technology sectors including next generation solar panel technology, liquid gas absorption.
Ultra
| Founders | Teddy Rosen |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Ultra provides application-engineered solutions in the key elements of mission critical and intelligent systems.
Sunny Britain
| Founders | Barak Goldstein, Ron Elul |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Sunny Britain offers financial services for individuals who wish to invest in a renewable energy system.
MyUtilityGenius
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
27, works for www.myutilitygenius.co.uk, convinced that small actions make the difference to save our Planet!
Water Hygiene Systems
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Water Hygiene Systems is a long established commitment to quality with excellent products and superior service
Cleantech Region Impact Group Limited
| Founders | Lars Ling |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Supporting Climate impact companies & ecosystems. With business, financing & networks.
Spark Energy Services
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Spark Energy Services is an energy service finance company.
Sterecycle
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Sterecycle is a waste management company specializing in the treatment and recycling of municipal wastes.
London Town Group of Companies
| Founders | Koolesh Shah |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
London Town Group of Companies specializes in property development, software, automation, clean energy, and energy storage services.
Climatecars
| Founders | Nicko Williamson |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Climatecars is an environmentally-friendly taxi service. We provide hybrid vehicles with drivers to businesses in London
Source London
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Source London is an electric vehicle charge points developer that supports clean and renewable energy solutions.
The Department of Energy & Climate Change (DECC)
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Department of Energy & Climate Change works to make sure that the United Kingdom has secure, clean, and affordable energy supplies.
Green Business Watch
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Web startup connecting UK consumers to accredited, local, renewable energy installers.
Star Domestic Cleaners
| Founders | Dylan Collins |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Star Domestic Cleaners is a small cleantech contractor located in London.
GreenZone
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
GreenZone offers a one-stop solution for environmentally friendly residential and commercial cleaning with associated services.
Emergent Energy
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Emergent Energy develops solutions to lessen carbon use on household systems.
Squeaky
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Squeaky is a marketplace that helps generators sell clean energy generated from solar, hydro and wind power sources.
Us Solar Fund
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
US Solar Fund (USF) is a renewable energy fund that aims to provide investors with attractive, sustainable dividends.
H2 Bulletin
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
News and Analysis
CoreOne
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
The world’s first connected, autonomous solar water heater.
Assertio Office Cleaning Company London
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
Office & contract commercial cleaning company based in London, UK.
RHC IMZADI Hydrogen Consulting
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
RHC IMZADI is a specialist boutique consultancy that assists companies and organisations interested in joining the Energy Transition.
O’Donovan
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
O’Donovan is a waste management company.
The World Refining Association
| Founders | Unknown |
| Follow | Website, Crunchbase, Twitter, Facebook, Linkedin |
The World Refining Association facilitates knowledge sharing & nurturing of business partnerships within the oil and gas sector.
