Energy construction companies

4493 UK companies working in the energy sector.

• I InstaGroup Finchampstead · Insulation · 50-249 employees

  InstaGroup offers insulation, solar PV, battery storage, and heat pump solutions for homeowners, developers, and businesses across the UK.

• I Install Solar Panels Chorley · Solar PV · 1-9 employees

  MCS-certified solar panel, battery storage and EV charger installation across Lancashire and the North West. Start with a free online solar survey.

• I Installio Ltd London · Solar PV

  Installio delivers clean energy upgrades as one connected system, helping improve EPC ratings and reduce household energy bills. From solar and batter

• I Intec Energy Solutions Ltd London · Solar PV · 1-9 employees

  INTEC Energy Solutions is a global leader in EPC Services, Project Development, BESS, and Operations & Maintenance for green energy solutions.

• I INTECHS INNOVATION TECHNOLOGY SYSTEMS LTD London · Electrical · 1-9 employees

  INTECHS provides cutting-edge industrial automation and digital solutions, optimizing efficiency and performance for businesses across various sectors

• I Integral Gas Limited Northampton · Heating & ventilation

  Integral Gas Limited provides nationwide gas-safe commercial services, specialising in heating, ventilation, plumbing, and renewable energy solutions

• I Integrated Renewables Ltd Dudley · Solar PV · 1-9 employees

  Integrated Renewables provides customised energy and automation solutions for residential and commercial clients, enhancing efficiency and supporting

• I Integrated Utility Services Ltd Newcastle Upon Tyne · Utilities · 50-249 employees

  Integrated Utility Services (IUS) is a leading UK provider of High Voltage power infrastructure services and adoptable utility networks, with extensiv

• I Integre Solar Betchworth · Solar PV · 1-9 employees

  Integre Solar UK Ltd is a local installer in Mole Valley, serving Surrey and West Sussex, specialising in high-quality Solar PV, Battery Storage, and

• I Intelect (UK) Ltd Middlesbrough · Electrical · 50-249 employees

  Intelect UK is an award-winning engineering contractor with over 25 years of experience, providing global engineering solutions across various industr

• I Intelligent Energy Solutions Bellshill · Solar PV · 1-9 employees

  Intelligent Energy Solutions installs Solar PV and Battery Storage across Central Scotland, offering affordable, high-quality energy solutions for hom

• I INTELLIGENT SOLAR LTD Yatton · Solar PV · 1-9 employees

  Intelligent Solar provides solar panel and energy storage installation services, helping homes and businesses in Somerset generate green energy and re

• I Intergienia Ltd Alfreton · Solar PV

  Intergienia Ltd is your local solar expert, specializing in installing top-notch solar PV systems and reliable battery backups. We help cut costs and

• I Interglow (Contracts) Ltd Royston · Insulation · 10-49 employees

  Interglow are experienced insulation installers offering Cavity Wall Insulation, External Wall Insulation, Loft Insulation, EPC Assessments, and PAS20

• I Intielectric Ltd Glasgow · Electrical

  Commercial and industrial electrical services in Glasgow and across the UK. Experienced, safety-focused, and ready for complex projects.

• I Intoheat (Holdings) Ltd Bristol · M&E contracting · 50-249 employees

  Leading building service engineers since 1986, INTOHEAT offers mechanical & electrical, decarbonisation, facilities management, and retail services na

• I Inverter Drive Systems Ltd Derbyshire · Electrical · 10-49 employees

  Inverter Drive Systems Ltd is an ABB inverter partner since 1994, specialising in energy saving solutions for industrial plants and commercial buildin

• I Invisible Group Southampton · Fit-out & interiors · 1-9 employees

  Experts in Commercial Interiors & Office Design in London. Top quality services to commercial properties. Talk to us today

• I Inyo Energy Ltd Oxford · Solar PV · 1-9 employees

  Inyo Energy installs solar panels, batteries, heat pumps & EV chargers for homes and businesses to lower energy bills and carbon footprint.

• i iO Energy Solutions South Shields · Heating & ventilation · 1-9 employees

  iO Energy Solutions delivers expert Building Management Services to optimise and maintain the performance of your spaces, focusing on energy efficienc

• i iotourist.com London · Utilities

  IO TOURIST LTD provides mobile internet services for travelers in Turkey, offering portable Wi-Fi modem rentals and eSIM solutions to ensure seamless

• I Iplan Construction & Consultants Ltd London · Civil engineering · 1-9 employees

  Iplan Construction & Consultants Ltd. offers expert planning, scheduling, and project management services led by an experienced civil engineer. Delive

• I Ips Electrical Ltd Worksop · Electrical · 10-49 employees

  IPS Electrical is a trusted electrical contractor founded in 2014, offering a wide range of services including commercial, industrial, new-build, dome

• I Ipsum Chorley · Utilities · 50-249 employees

  The UK's customer service leader in specialist utility and infrastructure services, keeping the UK's lights on and taps running 24/7/365.

• I Iq Engineers Ltd York · Marine & water engineering · 10-49 employees

  IQ Engineers provide bespoke mechanical engineering solutions for water and wastewater sites across the UK, including penstock installation, distribut

• I Ir Energy Ltd Pant Industrial Estate · Solar PV · 10-49 employees

  Save on bills with solar, heat pumps & EV chargers. IR Energy helps South Wales homes go greener with trusted renewable installations. Grant & finance

• I Ireland's Forecourt & Convenience Retailer Belfast · Electrical · 1-9 employees

  Ireland's Forecourt & Convenience Retailer is the leading specialist magazine and online platform for the forecourt and convenience retailing industry

• I IRL Group Hornchurch · Flooring

  IRL Group excel in industrial solutions. With expertise in epoxy resin flooring, floor markings and industrial painting, we are your go-to source for

• I Iropeaccess Ltd London · Scaffolding

  Specialist rope access company providing work-at-height services across London and the UK. IRATA certified. Get a free quote today.

• I Irwin M&E Craigavon · M&E contracting · 250+ employees

  Irwin M&E provides mechanical, electrical, energy, and renewable installation and maintenance services across public and private sectors throughout th

• I Irwin Smith Ltd Maidstone · Heating & ventilation · 1-9 employees

  Irwin Smith Ltd supplies and installs Renewable energy products alongside everyday Heating and Plumbing works. Domestic and commercial work is always

• I Isca Renewables Newport · Solar PV · 1-9 employees

  Isca Renewables are South Wales & South West England Solar Installers. Professional, local, in-house solar panel installations with fixed pricing. MCS

• I Isenau Projects Group Services Ltd London · Solar PV

  Isenau Projects develops grid-scale battery energy storage systems in UK, Spain and Germany. We work with landowners to develop commercially attractiv

• I Island Ground Screws Ltd Newport · Piling · 1-9 employees

  Island Ground Screws Ltd installs revolutionary ground screw pile foundations for commercial & residential projects, offering fast, low-carbon, and ve

• I Island Renewables Ltd Newport · Solar PV · 1-9 employees

  Isle of Wight's local renewable energy experts. We offer Solar PV, Tesla Powerwall and battery storage, EV charging, and heat pumps for homes & busine

• I Island Solar Ryde · Solar PV

  Island Solar offers solar panel and renewable energy solutions on the Isle of Wight, including solar panels, home batteries, and EV charging ports. In

• I ISR - INTELLIGENT SOLUTIONS FOR REFRACTORY LTD London · Steel fabrication

  Vesuvius is a global leader in metal flow engineering, providing a full range of engineering services and solutions, principally serving the steel and

• I Ithon Engineering Ltd Litlington · Civil engineering · 1-9 employees

  Ithon Engineering Limited is an engineering consultancy specialising in enhancing component, product and system performance through innovative researc

• I Itoo Electrical Ltd Rochester · Electrical · 1-9 employees

  Local electrical contractors and accredited MCS Solar PV and Battery storage installers. Offering a 10-year workmanship warranty and 25-year panel war

• I Itp Electrical Ltd Newquay · Electrical · 10-49 employees

  ITP Electrical provide specialist electrical & lighting solutions for commercial and industrial sites across Devon, Cornwall and the South West, with

• I Ivegate Developments Ltd Leeds · Design & build · 50-249 employees

  Ivegate Limited is a modern Building Services Specialist and Design & Build expert, established in 2011. They offer turnkey solutions across construct

• I Iwe Services Ltd Scarborough · Solar PV · 10-49 employees

  Renewable electrical solutions specialists providing solar PV, heat pumps, battery storage, EV chargers and electrical services across North Yorkshire

• I IZ Energy Barking · Solar PV · 50-249 employees

  IZ Energy specialises in making homes energy efficient with premium solar panels, heat pumps, and insulation. They help households access funded energ

• J J & B Hopkins Ltd Fareham · M&E contracting · 1-9 employees

  J&B Hopkins Limited is an employee-owned trust providing a full MEP design and build service to the construction industry and direct to end-user marke

• J J & J Carter Peterborough · Design & build

  J & J Carter are leading manufacturers of tensile fabric structures, offering design, manufacturing, and maintenance services for temporary and perman

• J J & J Pipeworx Ltd Southampton · Plumbing · 1-9 employees

  J&J Pipeworx Ltd offers first-class industrial pipe installation, fabrication, and welding services in Southampton and across the UK, serving pharmace

• J J A Brooks Mechanical Services Ltd London · M&E contracting · 50-249 employees

  JA Brooks is a mechanical services company designing, manufacturing, and fitting systems for water supply, sanitation, heat, fresh air, and gas across

• J J A McDonagh Engineering LTD (T/A RJ Engineering) Derby · Steel fabrication · 1-9 employees

  RJ Engineering is a leading precision manufacturer and one-stop manufacturing partner for tooling, jigs, fixturing, GSE, and general machining/fabrica

• J J Burrow Electrical Ltd Lancaster · Electrical

  J Burrow Electrical are professional electricians covering Lancashire, Cumbria & North Yorkshire for domestic, commercial & industrial electrical work

• J J Gooch Electrical Services Ltd Swaffham · Electrical · 1-9 employees

  Norfolk based electricians specialising in solar panels and EV charging for commercial and domestic clients. Offering a full range of electrical servi