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London’s Best Energy Efficiency Companies – To Work For and Buy From

This article showcases our top picks for the best London based Energy Efficiency companies. These startups and companies are taking a variety of approaches to innovating the Energy Efficiency industry, but are all exceptional companies well worth a follow.

We tried to pick companies across the size spectrum from cutting edge startups to established brands.

We selected these startups and companies for exceptional performance in one of these categories:

  • Innovation
    • Innovative ideas
    • Innovative route to market
    • Innovative product
  • Growth
    • Exceptional growth
    • Exceptional growth strategy
  • Management
  • Societal impact

Top London Energy Efficiency Companies

Data sourced from Crunchbase and SemRush.

Octopus Energy

Octopus Energy

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Octopus Energy builds technology that reduces the cost of energy, improves customer experience, and paves the way to a cheaper, greener, smarter grid. The company provides an easy, affordable energy option for Great Britain’s businesses.

It was established in 2015 as a subsidiary of Octopus Group, a British asset management company.. .

Hometree

Hometree

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Hometree is a UK based Smart Home Services company, offering homeowners unparalleled peace of mind & control in the running of their home.

Lightsource Renewable Energy

Lightsource Renewable Energy

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Lightsource BP is a global market leader in the development, acquisition and long-term management of large-scale solar projects and smart energy solutions. Their projects generate competitively-priced, dependable, clean energy for businesses and communities.

At their core they have always excelled as a utility-scale solar project developer, with incredibly strong in-house planning and development capabilities. Unlike their competitors, they are the owner as well as the planner, developer, operator, and manager.

They firmly believe that the delivery of solar alongside smart energy solutions will play a major role in the future of global energy.. .

Moltex Energy

Moltex Energy

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Moltex Energy is developing a next-generation nuclear reactor that can produce clean electricity at a lower cost than fossil fuels. Moltex Energy is a privately-held international company set up to solve the world’s most pressing challenge: safe and economical clean energy.

The technology is based on molten salt fuel in conventional fuel assemblies. Existing stockpiles of spent nuclear fuel can be used as the fuel source and the electricity produced is entirely flexible.

Harnessing a major scientific breakthrough and the latest technology, the company is developing radically better nuclear reactors to safely, cleanly and economically power the planet in the 21st century.. .

Addionics

Addionics

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Addionics is creating next-generation batteries through intelligent 3D battery architecture and engineering. It provides specialized improved rechargeable batteries by redesigning their architecture.

The company invents new energy storage with higher energy density, lower charging time, and improved heat safety, with the largest markets in mind. Addionics is developing a new technology that transforms the way to store and deliver energy with a positive effect on the environment.

Today, the company is accelerating the development and scale-up of its proprietary technology to create the next generation of batteries to power the future. It provides specialized improved rechargeable batteries by redesigning their architecture.

Addionics was founded in 2017 and is based in London, England.. .

Switchee

Switchee

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Switchee was founded out of INSEAD business school in 2015 and is headquartered in London. It is now the market leader in social housing IoT, servicing many of the largest housing associations in the UK.

The company helps large residential landlords to better manage their property portfolio, using technology to identify maintenance issues, reduce fuel bills and improve communication with residents. For every £1 invested in Switchee services, the landlord saves £2 and puts £2 back into the pocket of their resident.

Switchee has reimagined the way landlords interact with residents and manage their homes. Their services ensure that landlords have the information they need to eliminate fuel poverty, damp and mould as well as heating & ventilation failures.

Switchee is primarily a software and insights business, but to access this real-time data, they reinvented a ubiquitous household object – the thermostat. They have created an internet connected product that reduces energy bills, acts as a two-way communication platform with the resident and collects environmental data that drives an insights engine, landlord dashboard and API..

Carbon Trust

Carbon Trust

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Our mission is to accelerate the delivery of a sustainable, low carbon economy by helping businesses, governments and organisations across the globe to reduce carbon emissions and increase resource efficiency. We have a global team of more than 200 sustainability experts, including engineers, financiers and policy specialists, and almost two decades of experience in the climate change sector.

We reinvest surpluses from group commercial activities into our mission.. .

Limejump

Limejump

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Limejump is a next generation, technology-driven utility providing aggregation, Power Purchase Agreements, PPA, trading and supply services to their customers. Limejump’s technology empowers businesses and generators to become active energy market participants, generate new revenue streams and contribute towards a greener energy future.

Limejump connects customers with National Grid’s demand response programmes where generators are paid to ramp up or ramp down their energy export and businesses are compensated to shift or reduce their energy usage to help restore grid balance.. .

Arloid Automation

Arloid Automation

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We build an AI solution that is trained to automatically change HVAC settings based on a calculated comfort index in real time. As a result, it leads to less energy consumption while keeping an optimal level of comfort.

Our solution complements very well to existing Building Management Systems and advanced data analytics tools/platforms. We are working with existing HVAC infrastructure of the building and don’t require an installation of additional hardware devices.

Overall, our approach allows fast (specific) building simulation, faster building integration process, shorter time to first money saved from energy optimisation and a possibility to create microclimates within one building for better comfort at reduced energy consumption.. .

Mytrah Energy

Mytrah Energy

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Headquartered in London, UK, the Mytrah Group is focused on delivering sustainable energy in a world without subsidies. The group is privately owned and takes a long-term view of business, guided by strong corporate values and high ethical standards.

Mytrah placed an India-focused subsidiary – Mytrah Energy Limited (MEL) – on the AIM segment of the London Stock Exchange in 2010, raising $80 million from institutional investors such as Capital Group, Blackrock and Henderson. Since then it has raised approximately $500 million of mezzanine and senior debt, to fund construction of over 550 MW of wind power in India by early 2014.

In addition, MEL has a goal of owning 1500 MW of wind power by 2016.. .

Advizzo

Advizzo

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We combine methods from behavioural and data science to deliver a customer engagement software for all utilities.

Quimera Energy Efficiency

Quimera Energy Efficiency

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Quimera Energy Efficiency (QEE) is specialised exclusively in energy efficiency for the hospitality sector, reducing costs of operations without any investment from the hotel, combining intelligent energy optimisation technology with constant dedication of engineers. QEE works with most of the global hotel chains such as Hyatt, Marriott, Accor or Intercontinental in the Europe, UK, USA, Asia Pacific, China, India and the Caribbean areas.

The company provides hotels with a range of powerful tools such as: Cloud-based energy monitoring platform, intelligent HVAC automation software, control enhancement and most importantly, a team of energy engineers who are dedicated to reduce energy consumption being responsible for the entire project execution. As a result, hotel gets advanced facilities automation, commissioning technology and a dedicated team which generates energy saving while maintaining all the comfort standards.

The service is provided at “No Savings – No Fees” approach where fees are entitled only when savings occur or under fixed fees scheme – up for client to choose.. .

Metis Labs

Metis Labs

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Metis Labs produces intelligent software tools which improve production yield and reduce energy consumption.. .

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Airex

Airex

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Airex is a smart ventilation control that builds intelligent air ventilation units using atmospheric sensors and cloud algorithms. The company develops a retrofit smart ventilation control system that controls the airflow through air-bricks.

Through it, owners will benefit from decreased energy bills, warmer homes, enhanced thermal comfort, healthy home, and minimal disturbance without compromising on air quality. The smart algorithms allow automatic air flow regulation while taking into account local weather and air quality data.

Airex was founded on 2016 and is headquartered in London.. .

Demand Logic

Demand Logic

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Demand Logic is an online energy efficiency system that analyzes data from building management systems.

RheEnergise

RheEnergise

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RheEnergise is an energy company that transforms pumped hydro technology and boosts its capacity with High-Density Hydro (HDH) technology. RheEnergise has taken one of the oldest forms of energy storage, pumped-hydro (reservoirs, dams), and developed an innovative solution – High-Density Hydro™.

By installing on smaller hills and using our HD Fluid R-19, which early modeling has indicated could provide 2.5x the energy compared to low-density pumped-hydro.. .

Wisestate

Wisestate

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Wisestate is focused on the development of advanced technological solutions to turn buildings around the world into ecosystems of interconnected and communicating machines. With a range of customized solutions built on the Internet of Things technology, we empower building managers with valuable insights into current operation state and deliver automation opportunities to make certain building areas truly smart.

Our principal point of differentiation is technical and technological capabilities for absolute customisation and flexibility. The software and hardware solutions are tailored to the exact requirements of the client or specific building´s needs while maintaining a perfect balance between efficiency, cost and comfort..

GridDuck

GridDuck

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GridDuck transforms homes and businesses into part of the smart grid. GridDuck’s gateway uses a Zigbee wireless network to connect to our plugs and relays.

It monitors consumption data and executes your rule-sets. It connects to the cloud via ethernet, wireless or cellular network.

The company’s wireless plugs, relays and switches monitor real-time consumption patterns. Then can also monitor grid conditions and immediately respond to commands from the GridDuck gateway..

40South Energy

40South Energy

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At 40South Energy they have the expertise to turn ocean wave energy into useful work. Exploiting wave energy correctly lets you generate electricity, run a desalination process, or pump water, among a host of other tasks.

Most experts believe that converting sea and ocean wave energy is, along with photovoltaic (PV) energy, one of the best options for the future production of renewable energy. This is why scientists and inventors have been trying for decades to find ways to capture the energy in ocean waves.

The search has not had much success. Until now..

Energy 4 Impact

Energy 4 Impact

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A non-profit organisation working with local businesses to extend access to energy in Africa.

The Crowd

The Crowd

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The Crowd was born out of Green Mondays, and has been bringing together the business community to share ideas and innovation since 2008. They believe that the most successful businesses of the future will connect with society in a very different way from today.

They will solve social and environmental problems as a way of doing business. They will develop more open and transparent business models, and work with internal and external stakeholders to accelerate positive change..

Geothermal Engineering

Geothermal Engineering

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Geothermal Engineering is engaged in the development of deep geothermal heat and power projects.

Trident Energy

Trident Energy

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Trident Energy is an independent developer of enabling technology for the offshore renewables industry. They have developed “PowerPod” using their patented and low cost, highly controllable linear generator that converts reciprocating motion directly into electricity.

Their PowerPod technology reduced the complexity and equipment required in converting sea wave motion into electricity. PowerPod uses standard “off-the-shelf” Solid State power electronics to control the generator and to convert electrical output into useable electrical power.

PowerPod can be used as the power take-off system in many different Wave Energy Converters (WECs) and oscillating hydrofoil tidal stream devices. Trident is currently developing a small wave energy generator that can be attached to other offshore infrastructure to provide autonomous off-grid power.

Generating electricity from sea waves reduces the use of offshore diesel generators – reducing re-fuelling costs and minimising environmental risk from fuel spills. Powerpod offers a viable alternative to burning diesel offshore and they are keen to work with partners to integrate their clean and sustainable autonomous power solution with next-generation offshore wind foundations.

Trident’s PowerPod generator is positioned as the “Intel Inside” of the offshore renewable energy market, offering a generic, modular solution to reduce the costs of a wide range of host infrastructure.. .

Kiwi Power

Kiwi Power

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Kiwi Power is a leading global energy technology company that is simplifying distributed energy and provides distributed energy resource (DER) solutions globally. Our unique value combines advanced technology with market expertise gained by operating a world-leading energy resource optimisation business successfully in Europe for over ten years.

Kiwi Power enables electricity suppliers, asset owners, distribution network operators and independent aggregators to maximise the value of their energy assets, secure new revenue streams, and supply clean and affordable power.. .

hiber

hiber

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Home energy product installation startup

Earth Capital

Earth Capital

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EC is a global private equity investment manager totally focused on Sustainable Development within the climate change nexus.

Recyclan

Recyclan

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Recyclan is a tech enabled recycling company on a mission to reducing carbon footprint and making the world greener by recycling plastic waste. We are reducing plastic waste on beaches, landfills and in the ocean by driving collection through technology.

Processing and packaging the waste and then exporting them to our customers around the world though our 30 years+ established route to market. Thereby reducing carbon footprint, making the world greener, providing income for the worlds poorest people and making a profit.

Our visions is to make sure 100% of plastic waste in Africa is recycled (we have done 0.000035% so far). .

Signol

Signol

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Signol, our software as a service, harnesses cutting-edge behavioral science to tackle the triple bottom line (people, planet, and profits). Building upon our team’s unique behavioral research in aviation, we combine big data analytics and behavioral science to provide airline captains with refined performance feedback that motivates them to make fuel-efficient decisions when possible – significantly reducing airline fuel costs and CO2 emissions.

What’s more, Signol’s behavioral science approach makes captains happier. Signol could improve firm profits, reduce pollution, and increase job satisfaction..

EnergyWiser

EnergyWiser

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They want people to spend less on energy bills and more on life Every year in the UK, they lose enough money on their energy bills to buy each home in the UK a brand new iPad at Christmas. That’s a free iPad.

Every Christmas. They want to help people reclaim this money they are wasting..

E-Gistics

E-Gistics

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E-Gistics is an International 3rd Party Logistics company that specialises in the Fashion and e-commerce sectors. We deal directly with the world’s best carriers, to provide our customers with best logistics solution for their business.

Founded in 2011 and based in London, E-Gistics has already established itself as one of the Fashion Industry’s leading logistics providers, servicing retailers and brands such as LN-CC, Folk, and Chimp. However, we don’t stop there – the E-Gistics team has vast experience in a number of e-commerce sectors, as well as supply chain management, warehouse processing, and cost reduction.

If a more efficient, cost effective logistic solution is what you are looking for, no matter what your industry, then E-Gistics is the Partner for you.. .

DAJIE Ltd

DAJIE Ltd

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DAJIE provides a modular solution, combining hardware and software, that enables local communities to share internet and clean energy peer to peer while optimizing the complexity and cost to build and manage smart micro-grids and local networks. It is based on the blockchain technology, innovative IoT devices like routers and smart home router/meter, open source software and standard protocols that will enable our solution to be compatible with existing systems and different vendors devices.

The use of the blockchain technology provides a crypto currency and wallet to manage easily, transparently and safely the value generated by the energy produced and shared.. .

nCubeHome

nCubeHome

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nCubeHome is a Smart Home platform.. .

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OakTree Power

OakTree Power

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Oaktree Power is an energy sector “Aggregator”, using demand-side reduction to deliver financial and carbon savings to medium and large organisations. Your organisation’s facility could provide you with a new source of revenue whilst helping your organisation and the country achieve its net zero emissions goals.

Our technology, proven in thousands of buildings across the world, is housed in a small cabinet we install in your facility. This box communicates with our central operations centre and automatically turns your electrical plant such as pump motors, fans and air conditioning chillers down a little for infrequent, short periods when the country’s electricity grid is under stress.

Carbon emissions are reduced and you get paid every time your electricity consumption is adjusted. In addition, OakTree Power adjusts your facility’s electricity demand when peak-time tariffs are applied, providing you with substantial savings.

There is no capital investment required as Oaktree Power cover this cost and minimal risk. By signing up with us you create a new revenue stream and help the country achieve its zero-carbon emissions target..

Vestemi

Vestemi

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Vestemi is a new technology product company with a social purpose. Founded in 2018, their vision is to create simple, effective consumer products that make energy savings easy and accessible to everyone.

They believe that empowering their customers through the use of technology is the most effective way to sustain lasting action on climate change.. .

Bill Switchers

Bill Switchers

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Switch Your Energy Deals & Save Upto 40% Compare Your Current Deal & Get Guaranteed Savings We have more than 350 energy deals in your area. Just Switch to the best deal before the prices increase in winter.

1 We’re free, & trusted by 15 Millions customers in UK 2 Quickly compare energy prices or talk to our experts 3 Cancel your switch anytime* 4 Get Bill Switchers Special Discounts UK’s best gas & electricity, suppliers 5 Find Exclusive Discounts 6 Our Brands. .

Power Drive Efficiency

Power Drive Efficiency

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Power Drive Efficiency develops energy efficient equipment.

Elgin Energy

Elgin Energy

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Elgin Energy is an international and independent solar development platform. Established in 2009, Elgin Energy has extensive experience in delivering projects from initial landowner engagement to project completion with a 98% success rate in obtaining planning permission.

To date, only one project has not achieved planning permission.. .

Smart GreenTech Solutions

Smart GreenTech Solutions

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We are a well-established independent and multi award winning London based energy efficiency and sustainability consultancy.

Inspirit Energy Holdings

Inspirit Energy Holdings

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Inspirit Energy Holdings designed to operate as a single, standalone appliance for a building’s energy needs.

Digital Infra Partners

Digital Infra Partners

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Digital Infra Partners offers a series of summits that focus on building and operating a network, energy, and digital Infrastructures. It connects influencers and decision-makers who design, build, own and operate all forms of digital infrastructure with solution providers who have the technology and know-how to reduce our industry’s carbon footprint.

The company was founded in 2019 and is headquartered in London.. .

Nuclear Industry Association

Nuclear Industry Association

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Nuclear Industry Association (NIA) is the trade association for the civil nuclear industry in the UK.

Starsight

Starsight

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Starsight provides captive power and energy efficiency solutions to commercial, multi-site clients in Nigeria through long-term contracts.

UK Energy Assessors

UK Energy Assessors

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Energy Assessments, SAP Calculations and EPCs

Sefo & Reenergise

Sefo & Reenergise

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Sefo & Reenergise provides Innovate solutions for energy efficiency funding.

You may write to us at: BestStartup.co.uk/Fupping Ltd, 349 Royal College Street, London, England, NW1 9QS.

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