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101 Most Innovative United Kingdom Based Solar Companies & Startups

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This article showcases our top picks for the best United Kingdom-based Solar companies. These startups and companies are taking a variety of approaches to innovating the Solar 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 United Kingdom Solar Startups

Data sourced from Crunchbase and SemRush.



BBOXX designs, manufactures, and distributes plug-and-play solar systems.

Oxford PV

Oxford PV

Oxford PV is a provider of perovskite solar cells.

Lightsource Renewable Energy

Lightsource is a provider of ground and rooftop solar installations in the UK.

Oxford PV

Azuri Technologies

Azuri brings affordable solar power to off-grid rural Africans.

Oxford PV


Globeleq Generation Limited develops, builds, and operates renewable power projects in Africa and the Americas.

Oxford PV


Amarenco is a fast-growing, independent Solar PV investment company with a founding executive team that has wide and deep experience in

Intelligent Energy

Intelligent Energy is a clean power systems company offering fuel cell and hydrogen generation technologies.

Oxford PV


IQE is the global leader in the design and manufacture of advanced semiconductor wafer products.

Neptune Energy

Neptune Energy is an independent oil and gas exploration and production company.


BuffaloGrid is removing barriers to internet adoption and connecting the next billion.

Lekela Power

Lekela Power (Lekela) is a pan-African renewable energy generation platform

Sundrop Farms

Sundrop Farms is a leader in sustainable horticulture for the arid world; growing high-value crops using seawater and sunlight.

Belltown Power

Belltown Power is an international renewable energy company that develops and operates wind, solar, and hydro projects.

OXTO Energy

OXTO Energy is a Pioneering flywheel energy storage technology with ambitions to transform the energy landscape.

Naked Energy

Naked Energy has developed an innovative hybrid solar technology generating combined heat and power.

eleXsys Energy

eleXsys Energy operates as a cleantech energy company.


Eelpower is a battery storage developer that operates energy storage solutions.

Oxford PV


Ecoisme is your energy-saving system combining a utility switch and energy monitoring to reduce your utility bills.

Solaris Offgrid

Provide sustainable energy in low-income communities.


PowerMarket provides global solar intelligence using downstream satellite data and advanced AI.

Aminex plc

Aminex plc is an Africa-focused oil and gas company with near-term production, development, and high-impact exploration.

Green Hedge

Green Hedge is a leading developer and operator of low-carbon electricity generation and storage projects.


Zhyphen is to supply integrated modular energy systems that generate off-grid renewable energy that is sustainable, and affordable.

Verto Homes

Experienced developers, building 20 Zero Carbon Smart homes that generate their own energy.

Cambridge Photon Technology

Cambridge Photon Technology is a developer of organic photovoltaic devices used to enhance next-generation solar technology.

Oxford PV


E24 provides fully integrated end-to-end, modular, and inter-connectable renewable energy solutions.


Solivus designs and creates solar products for the home and bespoke solar solutions for businesses.


Renovagen has developed a patented portable solar power system called “RAPID ROLL”, a complete “micro-grid in a box” solution.

Oxford PV

Prolectric Services

Prolectric Services is a supplier of off-grid renewable energy solutions.


Ecovision is a British sustainable energy heat pump manufacturer


Vidrona is a British AI-Based Predictive Prescriptive Analytics Company for the Utilities. It helps utilities to increase RoI.


EvoEnergy provides renewable energy solutions and services.


SolarisKit is a cleantech startup behind the world’s first flat-packable solar thermal collector.

Aerial Power

Aerial Power is developing UAVs for the cleaning of solar panels, mirrors, and windows.

Ignis Energy

Ignis Energy specializes in the generation of renewable energy from sustainably sourced timber.

Oxford PV

Green Nation

Green Nation owns and operates a solar farm that generates electricity.


Mwezi is a distributor of solar products.


Firglas provides commercial-scale algae cultivation for food-grade products.

EDF Energy

EDF Energy is a producer of low-carbon electricity that has 35 wind farms – including two off-shore.

The Solar Cloth Company

A multi-award-winning innovator in the solar power market focusing on the integration of Thin Flexible Solar Panels into buildings.

Erin Solar

Erin Solar is a commercial solar panel management company.

Renewable Energy Systems

Renewable Energy Systems is a partner for renewable investors, asset owners, and project developers seeking renewable energy solutions.

IO Solar

Shamba Technologies is a renewable energy technology company based in Tanzania and the UK.


Gaia-Wind is a specialist designer and manufacturer of small wind turbines.

Oxford PV


HomeSun helps homeowners to generate their own electricity with free solar PV panels.

Solar Capture Technologies

Solar Capture Technologies has considerable experience in the manufacture and application of high-value photovoltaic technology

Oxford PV

ENF Solar

ENF Solar is a solar trade platform that provides a directory of solar manufacturers, sellers, and installers.

Oxford PV

Good Energy

Good Energy is a British renewable electricity company with a difference.


EcoLogicLiving is a reseller and installer of renewable energy, heat, and power generation technologies.

Nur Energie Ltd

Nur Energie develops solar power plants in the Mediterranean region and is establishing itself as an independent solar power producer.


Solarcentury develops, constructs, owns, and operates utility-scale solar and smart technology across Europe, Latin America, and Africa.

Centre for Renewable Energy Systems Technology

CREST is the largest and leading UK sustainable energy research centre.


PassivSystems was established in 2008 to develop leading-edge smart-home technology for the mass market.

Project Solar UK

Project Solar UK is a supplier and installer of solar panel.

Vital Energi

Vital Energi develops efficient energy provision and helps in the development of sustainable means of supplying heat and power in the UK.

Sollatek UK Ltd

Voltage Protection and Solar Products & LED Lighting

Oxford PV

PF Nexus

Renewable energy & infrastructure deal origination platform


Myenergi is a designer and manufacturer of renewable energy products for eco-smart home management.

Vapor PV

Vapor PV enhances the efficiency of solar panels in a cheap and easy-to-install manner by controlling their working temperature using vapor.

ISIS Solar

ISIS Solar will install, operate, and maintain a 3kW solar system on your roof.

Fischer Future Heat

Fischer Future Heat provides energy solutions, electric, solar storage, and wireless thermostat services.

Cambridge Energy Partners

Cambridge Energy Partners is a provider and manufacturer of solar energy solutions – reducing cost, risk, and complexity.


renooble uses satellite, climate, and psychographic data to find people who will benefit the most from distributed energy generation.

Krannich Solar

Krannich Solar is a specialist for solar modules, inverters, mounting systems and photovoltaic storage solutions.

The Eco Experts

The Eco Experts is the UKs solar comparison site providing reliable info on government incentives for renewables.

Camin – Cambridge Innovation Consulting

CamIn is an expert consulting firm dedicated to emerging science and technology innovation.


METKA EGN develops utility-scale solar and energy storage projects.

OVO Group

OVO is a leading energy technology company determined to create a world with clean, affordable energy for everyone.

Street By Street Solar

Street By Street Solar offers rooftop solar installations with a sustainable source of power.

Specialised Cameras

Specialised Cameras is currently developing a new and unique type of CCTV camera.

Absolar Solutions

Carbon reduction intelligence in the built enviornment

Oxford PV

Eco 2 Solar

Eco2Solar specialise in electrical technologies – particularly solar photovoltaic panels, energy storage and Electric Vehicle chargers.

Viridian Solar

Viridian Solar is a manufacturer of roof-integrated solar panels.

Oxford PV


VivoPower provides renewable energy to customers from solar power assets that it builds, finances, and operates.


Enecsys manufactures grid-connected solar micro inverters and monitoring systems that offer a value proposition for solar PV systems.

Solar Media

Solar Media is an international vibrant media business.

Fern Trading

Fern Trading operates in sectors that make a valuable contribution to the UK.


IDDEA provides solar panels, battery storage, and electric vehicle charging points.

Oxford PV

G24 Power

G24 Power is recognised as the world leader in the design and manufacture of Dye Sensitized Solar Cells.


Lumicity provides end-to-end solutions for solar photovoltaic (PV) systems, including design, planning, procurement, financing, and more.


Tenesol SA, is a global solar provider headquartered in La Tour de Salvagny, France. Tenesol, a wholly-owned subsidiary of Total SA, has

Elili Solar

Elili Solar is an online store that offers solar panels, off-grid solar system kits, solar components, mounting systems, and solar pumps.

Global Energy Systems

Global Energy Systems is a UK manufacturer of renewable energy systems, most recently including air source heat pumps.

Investor Square – Property and Solar Investments

Investor Square – Property and Solar Investments is a blog publishing news and reviews on investment property and green energy investments.

Cognitive Business

Cognitive builds artificial intelligence solutions to help the industrial world learn from its data

Shell Energy Retail

Shell Energy is a home energy company that supplies renewable electricity. It also serves large-scale businesses around the world.


VH GSEO is a closed-ended investment firm offering investors direct exposure to a diversified portfolio of energy infrastructure investments

Cumulus Energy Storage

Developing super-storage grid-level batteries.

Clean Thermodynamic Energy Conversion Ltd

Advanced Conversion Technology – Energy

Solar Communications

Solar Communications is a cloud communication and computing specialist.


Boxergy is a Scottish company focused on making low carbon heat affordable for all.


isoenergy is designing, supplying and installing ground source heat pumps and other renewable energy systems.

Oxford PV

Smart GreenTech Solutions

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

S A S Energy

SAS Energy is a highly trusted, highly professional and one of the most forward-thinking renewable energy companies in the UK.

Joju Solar

Experts at designing and building solar PV systems, with a passion for community power.


Home Energy Monitoring

Fusion8 Ltd

Next generation green-first solar.

Oxford PV

Midsummer Wholesale

Midsummer Wholesale is a company that sells low-priced solar pv goods and offers advice to MCS installers.


Synetica is a energy saving product development company and provide energy saving services.

Oxford PV

World Energy Council

World Energy Council is a UN-accredited global energy body dedicated to delivering a sustainable energy system worldwide.

Oxford PV

Baldwin & Francis

Baldwin & Francis is a quality supplier of integrated electrical systems to the Mining, Oil & Gas, Industrial & Rail industries.

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